ライフサイエンスコーパス: sulfuric acid

1 cid catalyzed by Pd2+ cation in concentrated sulfuric acid.

2 acidity comparable to that of 100% anhydrous sulfuric acid.

3 ulfate anions and by one or two molecules of sulfuric acid.

4 d silica gel and a mixture of silica gel and sulfuric acid.

5 oduct of the Friedel-Crafts acylation in hot sulfuric acid.

6 es to acetic acid at 180 degrees C in liquid sulfuric acid.

7 onor and a hydrogen bond acceptor toward the sulfuric acid.

8 termediate alcohol 14 was then cyclized with sulfuric acid.

9 ion is carried out in the presence of dilute sulfuric acid.

10 23-diselenaporphyrin (4), respectively, with sulfuric acid.

11 e in the presence of lower concentrations of sulfuric acid.

12 acid more slowly on heating in concentrated sulfuric acid.

13 phile environments, rather than concentrated sulfuric acid.

14 by iodic acid with little contribution from sulfuric acid.

15 rated from naturally occurring fluorspar and sulfuric acid.

16 after reacting the shale oil distillate with sulfuric acid.

17 cally originate from the oxidizer, water, or sulfuric acid.

18 le microcrystals of graphite in concentrated sulfuric acid.

19 chemical composition when SOA was exposed to sulfuric acid.

20 studies on organic chemistry in concentrated sulfuric acid.

21 studies on organic chemistry in concentrated sulfuric acid.

22 transformed to value-added chemicals such as sulfuric acid.

23 ene) glycol 250 diacid (PEG 250 diacid), and sulfuric acid.

24 dicator solution of potassium dichromate and sulfuric acid.

25 a protactinium complex using boric acid and sulfuric acid.

26 molecules known to be stable in concentrated sulfuric acid.

27 nd secondary organic aerosol associated with sulfuric acid.

28 r biogenic organic compounds, in addition to sulfuric acid.

29 hich oxidizes methane to methyl bisulfate in sulfuric acid.

30 molybdate in the presence of 50.0 mmol L(-1) sulfuric acid.

31 annot be explained only by the nucleation of sulfuric acid.

32 ssible cyanohydrin derivatives in methanolic sulfuric acid.

33 (III) intermediate in concentrated or fuming sulfuric acid.

34 Pt(II) "Periana-Catalytica" catalyst in 98% sulfuric acid.

35 s, of which one example is the production of sulfuric acid.

36 rescence quantum yield for quinine in 0.05 M sulfuric acid.

37 blue when exposed to mixtures of iodine and sulfuric acid.

38 Milk was wet-ashed by using nitric and sulfuric acids.

39 calcite slurry dissolution with carbonic and sulfuric acids.

40 peracetic acid (300 mM, 2.3 wt%) and dilute sulfuric acid (100 mM, 1.0 wt%) at 120 degrees C for 5 m

41 2)O(5)), a key catalyst in the production of sulfuric acid(17).

42 often been coupled with strong and corrosive sulfuric acids (2-3 M), leading to severe electrode corr

43 precursor molecules seeded into concentrated sulfuric acid, a result that is corroborated by domain k

44 ce source material for mineral dust, in pH 2 sulfuric acid, acetic acid, and oxalic acid, respectivel

45 ur findings reveal the multifaceted roles of sulfuric acid, acting as a dispersion medium, a dehydrat

46 Sulfuric acid additions could have made the surface ocea

47 bility of nucleic acid bases in concentrated sulfuric acid advances the idea that chemistry to suppor

48 njection, and indicate that the formation of sulfuric acid aerosol was complete within 3 wk.

49 low-power method for collecting micron-sized sulfuric acid aerosols in bulk from the atmosphere of Ve

50 ormation without the intentional addition of sulfuric acid, although contamination could not be exclu

51 either a doubling or near total reduction in sulfuric acid-amine particle formation rates.

52 easurements of rates of nucleation involving sulfuric acid, ammonia, ions, and organic compounds cond

53 (HOMs), in addition to taking place through sulfuric acid-ammonia nucleation.

54 f HIO(3) particles are rapid, even exceeding sulfuric acid-ammonia rates under similar conditions.

55 droplets are composed of concentrated liquid sulfuric acid-an aggressive solvent that is assumed to r

56 The phosphonic acid and sulfuric acid analogs of OVS are also potent inhibitors

57 uster sequentially loses ammonia followed by sulfuric acid and (2) a one-step pathway whereby the clu

58 intercalation compound (GIC) in concentrated sulfuric acid and (2) oxidizing and exfoliating the stag

59 re dependence of quinine solutions in 0.05 M sulfuric acid and 0.1 M perchloric acid.

60 ERN CLOUD chamber, we show that nitric acid, sulfuric acid and ammonia form particles synergistically

61 New particle formation via the ion-mediated sulfuric acid and ammonia molecular clustering mechanism

62 Though sulfuric acid and ammonia/amines are recognized as main

63 The air/aqueous interfaces of sulfuric acid and bisulfate solutions play key roles in

64 ine complex is quantitatively extracted from sulfuric acid and can be recovered from the column by el

65 Results demonstrate that sulfuric acid and condensed organosulfur species formed

66 During the experiments involving sulfuric acid and dimethylamine, it was possible to stud

67 lus, to extract valuable metals by producing sulfuric acid and ferric ions that dissolve sulfidic min

68 tea, fresh tea leaves, and weeds) with 0.1 M sulfuric acid and from soil with 0.1 M sulfuric acid met

69 to generate low-volatility products such as sulfuric acid and high-molecular weight organics that nu

70 atosphere, in the heterogeneous formation of sulfuric acid and in the formation of aerosols, in H(2)S

71 water molecules, and also in the presence of sulfuric acid and its complexes with one and two water m

72 opogenic sources are oxidized in air to form sulfuric acid and methanesulfonic acid (MSA).

73 of carbon single-walled nanotubes (SWNTs) in sulfuric acid and Nafion was investigated using solid-st

74 acid production can be explained by reduced sulfuric acid and organic acid production.

75 tic seabird-influenced particles can grow by sulfuric acid and organic vapour condensation to diamete

76 The nucleation of sulfuric acid and organic vapours is thought to be respo

77 nucleation and heteromolecular nucleation of sulfuric acid and organics and reproduces the profile of

78 volving the formation of clusters containing sulfuric acid and oxidized organic molecules from the ve

79 ving Outdoor Droplets) chamber at CERN, that sulfuric acid and oxidized organic vapors at atmospheric

80 ne alanine o-phosphoric acid, p-anisaldehyde sulfuric acid and p-amino benzoic acid reagents.

81 emical quartz crystal microbalance (EQCM) in sulfuric acid and phosphate buffer electrolytes.

82 llowed by sample dissolution in a mixture of sulfuric acid and sodium bisulfite.

83 of peracetic acid (PAA) and Amplon (blend of sulfuric acid and sodium sulfate) at a poultry processin

84 Coating with sulfuric acid and subsequent hygroscopic growth enhance

85 entieth century, leading to the formation of sulfuric acid and to the precarious state that they are

86 Sulfuric acid and water clusters are important for new p

87 2-3 nm most likely occurs by condensation of sulfuric acid and water, implying that anthropogenic sul

88 tratospheric aerosols primarily consisted of sulfuric acid and water, many also contained meteoritic

89 anotube fibers were swollen in oleum (fuming sulfuric acid), and organic spacer groups were covalentl

90 esulfonic acid is formed simultaneously with sulfuric acid, and both are found in particles in coasta

91 liquid and solid particles containing water, sulfuric acid, and in some cases nitric acid) that are f

92 ximately 37 wt.%) and 20% (v/v) concentrated sulfuric acid ( approximately 98 wt.%) at room temperatu

93 issolved Fe(3+) in varying concentrations of sulfuric acid are shown to be good candidates for explai

94 erchloric acid rather than quinine in 0.05 M sulfuric acid as a standard solution for the determinati

95 under solar UV light produces first gaseous sulfuric acid as an intermediate product before surface-

96 cular the methanolysis of ethyl acetate with sulfuric acid as catalyst, is used as a model reaction t

97 with propionic anhydride using concentrated sulfuric acid as catalyst.

98 Sulfonation of 5 and 6 with concentrated sulfuric acid at 100 degrees C gave sulfonated derivativ

99 tween 0.4 and 28.6% degradation in 98% (w/w) sulfuric acid at ~25 degrees C, over the span of 14 days

100 e constant, indicating greater resistance to sulfuric acid attack.

101 d, sulfur dioxide, and sulfur polymers, with sulfuric acid being about 50 times as abundant as the ot

102 for a genetic-like polymer in a hypothetical sulfuric acid biochemistry.

103 the major product when solutions of bromate, sulfuric acid, bromide, and chloride ions are frozen.

104 hen the aerosol particles are acidified with sulfuric acid but stops entirely only under dry conditio

105 Sulfuric acid can act as a catalyst of its own formation

106 Sulfuric acid can be volcanic in origin, and organic com

107 nt and further establishes that concentrated sulfuric acid can sustain a diverse range of organic che

108 occur via low-energy pathways under water or sulfuric acid catalysis.

109 rongly confirm that inorganic acids, such as sulfuric acid, catalyze particle-phase heterogeneous rea

110 Fuming sulfuric acid charges SWNTs and promotes their ordering

111 NH(3) dissolves in some of the sulfuric acid cloud droplets, effectively neutralizing t

112 A Venus-analogue atmosphere with sulfuric acid clouds is also disfavoured at 2.6sigma con

113 c liquids can form from planetary materials: Sulfuric acid combined with nitrogen-containing organic

114 rmation of an unusually stable aromatic acid-sulfuric acid complex, which likely leads to a reduced n

115 n of the electrostatic mode decreases as the sulfuric acid concentration increases.

116 uric acid in the Venus cloud temperature and sulfuric acid concentration range, using UV spectroscopy

117 quantitatively determined and the gas-phase sulfuric acid concentration required to incorporate the

118 aterial, which spatially correlates with the sulfuric acid concentration, is identified as radiolytic

119 grees C, 30.13 min reaction time, and 46 wt% sulfuric acid concentration.

120 cids are stable in the range of Venus' cloud sulfuric acid concentrations (81% and 98% w/w, the rest

121 that the AP-ID-CIMS allows quantification of sulfuric acid concentrations and is capable of detecting

122 Enhanced sulfuric acid concentrations are found in Europa's geolo

123 n maintain stability throughout the range of sulfuric acid concentrations present.

124 evant for environments characterized by high sulfuric acid concentrations, for example, during the tr

125 evated SO(2) and OH levels leads to enhanced sulfuric acid concentrations, promoting particle formati

126 dergo solvolysis within a few weeks, at both sulfuric acid concentrations.

127 tion rates or their functional dependence on sulfuric acid concentrations.

128 the stability and growth on the hydrophilic sulfuric acid counterpart.

129 The evaluation through sulfuric acid demonstrated that the mixtures containing

130 ducts are either bare sulfuric acid dimer or sulfuric acid dimer complexed with a water molecule.

131 cases, the reaction products are either bare sulfuric acid dimer or sulfuric acid dimer complexed wit

132 t particles acquire a large mass fraction of sulfuric acid during atmospheric aging, considerably alt

133 on was observed from 0.1 M Na(2)SO(4) in 95% sulfuric acid during multibubble sonoluminescence (MBSL)

134 The hydrogen-bonding OH bond of the sulfuric acid elongates by 0.07(2) A relative to that in

135 teraction between biogenic organic acids and sulfuric acid enhances nucleation and initial growth of

136 The model uses empirical estimates of sulfuric acid evaporation rates obtained from new measur

137 HH and GG dipeptides are stable in 98% w/w sulfuric acid for at least 4 months, while II, LL, VV, P

138 , PP, RR and KK resist hydrolysis in 81% w/w sulfuric acid for at least 5 weeks.

139 Sensitivity analysis shows that substituting sulfuric acid for citric acid and achieving >52% heat re

140 strength to at least that of 100% anhydrous sulfuric acid for various acid-catalyzed organic transfo

141 ic aerosols by reacting with condensed phase sulfuric acid, forming low-volatility organosulfate comp

142 potassium contents because the production of sulfuric acid from protein metabolism and bicarbonate fr

143 rvations of dimethylsulfide, sulfur dioxide, sulfuric acid (gas), hydroxide, ozone, temperature, rela

144 The replacement of oxalic acid with sulfuric acid gave comparable results for B(OH)(3), but

145 It was observed that the gaseous sulfuric acid (GSA) concentration varied strongly, altho

146 issolution are in the order of oxalic acid > sulfuric acid > acetic acid.

147 ouds of Venus are believed to be composed of sulfuric acid (H(2)SO(4)) and minor constituents includi

148 using manganese dioxide (MnO(2)) as oxidant, sulfuric acid (H(2)SO(4)) as solvent, and bromine (Br(2)

149 Besides hydrochloric acid (HCl), sulfuric acid (H(2)SO(4)) is also used to acidify drinki

150 e two key intermediates in the production of sulfuric acid (H(2)SO(4)) on Earth's atmosphere, one of

151 y in the literature regarding the effects of sulfuric acid (H(2)SO(4)) on elemental Hg uptake by acti

152 ing vapor in the atmosphere is thought to be sulfuric acid (H(2)SO(4)), stabilized by ammonia (NH(3))

153 r and a key intermediate in the formation of sulfuric acid (H(2)SO(4), SA) in the Earth's atmosphere.

154 We report on the intermolecular transfer of sulfuric acid (H2SO4) and sulfur trioxide (SO3) from an

155 However, sulfuric acid (H2SO4) can form on the external and inter

156 ate aerosol layer led to the suggestion that sulfuric acid (H2SO4) must photolyze at high altitudes.

157 tabilized Criegee radicals (sCIs) in gaseous sulfuric acid (H2SO4) production.

158 Sulfuric acid (H2SO4), bisulfate (HSO4(-)), and sulfate

159 Sulfuric acid (H2SO4), formed from oxidation of sulfur d

160 e- and dextran VPA esters were modified with sulfuric acid half ester moieties to improve intracellul

161 ospheric aging, internal mixing of soot with sulfuric acid has profound implications on visibility, h

162 sed on unspecific gravimetric analysis after sulfuric acid hydrolysis.

163 d that sulfur content (S %) was very low for sulfuric acid hydrolyzed samples, and X-ray results did

164 oxidized biogenic vapours in the absence of sulfuric acid in a large chamber under atmospheric condi

165 nificantly lower production of iron ions and sulfuric acid in leachate.

166 oxoacid particle formation can compete with sulfuric acid in pristine regions of the atmosphere.

167 Tailings were leached using sulfuric acid in reaction columns and subsequently inocu

168 Extensive use of sulfuric acid in technological applications calls for kn

169 There they react with sulfuric acid in the aerosol layer to form phosphine (2

170 Sulfuric acid in the atmosphere can participate in acid-

171 , and also in understanding the formation of sulfuric acid in the atmosphere of Venus.

172 estigation show that the catalytic effect of sulfuric acid in the SO(3) hydrolysis can be important i

173 d bases purine and pyrimidine, are stable in sulfuric acid in the Venus cloud temperature and sulfuri

174 Although the sulfuric acid in this work was produced from direct reac

175 will convert hydrogen halides and nitric and sulfuric acids into stable salts to enable stratospheric

176 for genetic polymers stable in concentrated sulfuric acid is a necessary first step to establish tha

177 Sulfuric acid is commonly known to be a strong acid and,

178 boratory experiments show that nucleation of sulfuric acid is considerably enhanced in the presence o

179 The detection of nitric acid and sulfuric acid is demonstrated down to 100 ppb via reacti

180 e dipeptides studied in 98% w/w concentrated sulfuric acid is different from the standard acid-cataly

181 It is thought that sulfuric acid is essential to initiate most particle for

182 ra with Galileo data indicates that hydrated sulfuric acid is present and is a major component of Eur

183 In addition, condensation of sulfuric acid is shown to occur at a similar rate on amb

184 Sulfuric acid is the key chemical component to new parti

185 ad and forms particles more efficiently than sulfuric acid, its gas-phase formation mechanism remains

186 y dextran sulfate sodium and trinitrobenzene sulfuric acid, KO mice were more tolerant than wild-type

187 Here, we performed sulfuric acid leaching on an ultramafic rock, which prod

188 g a hydrothermal reaction, we have converted sulfuric acid lignin (SAL) into a water-soluble hydrothe

189 ins, suggesting that low-temperature, liquid sulfuric acid may influence geological processes.

190 carbonyl groups is observed in concentrated sulfuric acid media that also produces a previously unob

191 its separation and crystallization, even in sulfuric acid media where protactinium is relatively sta

192 0.1 M sulfuric acid and from soil with 0.1 M sulfuric acid methanol after adjusting soil acidity with

193 ethods for carbohydrate analysis, the phenol-sulfuric acid method is the easiest and most reliable me

194 Using the phenol-sulfuric acid method, the ethanol extract of P. ostreatu

195 ly utilized oxidation media, via nitric acid/sulfuric acid mixtures, are too corrosive and oxidizing

196 catalytic water molecule is substituted by a sulfuric acid molecule or one of its hydrates.

197 f monoterpenes, cluster directly with single sulfuric acid molecules and then form growing clusters o

198 simulations to show that the presence of two sulfuric acid molecules in (H2SO4)m x base x (H2O)6 clus

199 With one cis-pinonic acid and three to five sulfuric acid molecules in the critical nucleus, the hyd

200 d then form growing clusters of one to three sulfuric acid molecules plus one to four oxidized organi

201 Here we show large size growth when sulfuric acid nanoparticles of 4-20 nm are exposed to ep

202 ces of nutrients of aeolian origin including sulfuric acid, nitric acid, methanosulfonic acid (MSA),

203 ding hydrogen peroxide, nitrous acid and the sulfuric acid/O(2) couple.

204 ide, and the condensation of OOMs along with sulfuric acid onto new particles is sufficient to explai

205 absence of inorganic acids and bases such as sulfuric acid or ammonia and amines, respectively.

206 reserved by widespread cooling from volcanic sulfuric acid or by burial under dust or pyroclasts.

207 then probably limited by the arrival rate of sulfuric acid or cluster-cluster collision.

208 100-fold by extremely low concentrations of sulfuric acid or iodine oxoacids above 10(5) cm(-3), rea

209 in atmospheric field conditions that involve sulfuric acid, organic or iodine oxide vapours have yet

210 About 10% of stratospheric sulfuric acid particles larger than 120 nm in diameter c

211 ades could cause up to half of stratospheric sulfuric acid particles to contain metals from reentry.

212 ies can be clearly measured in stratospheric sulfuric acid particles.

213 rticles are less acidic than the majority of sulfuric acid particles.

214 h century stone from York Minster suppresses sulfuric acid permeation.

215 rticles in terrestrial environments with low sulfuric acid pollution.

216 Results Al(2)O(3) sandblasting followed by sulfuric acid pretreatment significantly enhanced the bo

217 O(3)) sandblasting in conjunction with a 98% sulfuric acid pretreatment, exhibits improved bond stren

218 lasting alone, and in conjunction with a 98% sulfuric acid pretreatment.

219 Bioleaching using sulfuric acid produced by sulfur-oxidizing bacteria was

220 The mechanism of reduced sulfuric acid production is unknown.

221 Daily sulfuric acid production was also estimated from the red

222 Optimization of biological sulfuric acid production was investigated by varying ino

223 otentially important pathway for atmospheric sulfuric acid production.

224 ently the accepted mechanism for atmospheric sulfuric acid production.

225 ply that the interaction between organic and sulfuric acids promotes efficient formation of organic a

226 alues were compared to those calculated by a sulfuric acid proxy that considers solar radiation and S

227 tion the neutral gaseous species ammonia and sulfuric acid react to form ammonium and sulfate ions.

228 For atmospheric sulfuric acid (SA) concentrations the presence of dimeth

229 ons of gaseous formic acid with concentrated sulfuric acid show that impinging monomers (HCOOH and DC

230 ic acid) with the increased concentration of sulfuric acid solution in water in both modes; (iii) the

231 rodes, Deltaphi(sol), immersed in an aqueous sulfuric acid solution was monitored while performing co

232 on-rich alkali-activated materials (AAMs) in sulfuric acid solution.

233 on carbon but favorable on platinum in a 1 M sulfuric acid solution.

234 Here, we report a study of aqueous sulfuric acid solutions across a broad concentration ran

235 cy generation (SFG) spectra of adlayers from sulfuric acid solutions on Pt(111) surfaces and reveal s

236 of operation can collect the entire range of sulfuric acid solutions; (ii) the collection efficiency

237 ich utilizes (bpym)Pt(II)Cl2 in concentrated sulfuric acid solvent at 200 degrees C, is a highly stab

238 on is possible through the use of an aqueous sulfuric acid solvent, in an aqueous biphasic reaction m

239 Confined sulfuric acid species together with adsorbed water molec

240 oxanes, promoted by the heterogeneous silica sulfuric acid (SSA) catalyst, is reported.

241 cyanating reagent in the presence of silica sulfuric acid (SSA).

242 tinuously cycles sulfur between three forms: sulfuric acid, sulfur dioxide, and sulfur polymers, with

243 nce on fossil fuels for sulfur and therefore sulfuric acid supply(8,9), our technology may represent

244 Using trifluoroacetyl sulfuric acid (TFAOSO(3)H), we discovered a new methane

245 C-H activation between methane and Sb(V) in sulfuric acid that could potentially outcompete superaci

246 The key step is a Prins reaction in 60% sulfuric acid that gave the key tricyclic intermediate w

247 res only air, water, electricity, and dilute sulfuric acid, the bulk of the latter being recycled.

248 f the clusters containing three molecules of sulfuric acid, the clusters grow at a similar speed, ind

249 80%, 90% and 98%* concentration by volume of sulfuric acid, the rest water.

250 often one thousand times more abundant than sulfuric acid, the resulting particle growth rates can b

251 demonstrate that ferric iron can react with sulfuric acid to form two mineral phases: rhomboclase [(

252 s treated in the second-stage leaching using sulfuric acid to further concentrate precious metals, wh

253 = 1,3,5-benzenetricarboxylate] with aqueous sulfuric acid to generate its sulfated analogue, MOF-808

254 ct with the sugar content in the presence of sulfuric acid to generate magenta complexes.

255 he cesium hexafluosilicate with concentrated sulfuric acid to generate silicon tetrafluoride gas.

256 bazides 3a-c were cyclized by treatment with sulfuric acid to give 1,3,4-thiadiazoles 4a-c.

257 xtractable metal complex, we used iodide and sulfuric acid to neutralize the charge on Cd(2+) to form

258 The contribution of sulfuric acid to new particle growth was quantitatively

259 0% aqueous hydrogen peroxide in concentrated sulfuric acid to provide 2-(5-oxo-3-(pentafluorosulfanyl

260 se gas (GHG) emissions was the production of sulfuric acid to regenerate resins, rather than transpor

261 ermination, the seeds were usually soaked in sulfuric acid to remove shells easily.

262 We investigated the nucleation of sulfuric acid together with two bases (ammonia and dimet

263 y surface is water-depleted and must support sulfuric acid transiently in liquid phase to dissolve or

264 n of acid-grade fluorspar (>97% CaF(2)) with sulfuric acid under harsh conditions.

265 Assay parameters for lipid sample volume, sulfuric acid, vanillin/phosphoric acid, post-reaction i

266 The experiments involved sulfuric acid vapor and different stabilizing species, i

267 del predicts that nucleation rates equal the sulfuric acid vapor collision rate times a prefactor tha

268 ted nucleation rates and their dependence on sulfuric acid vapor concentrations are in reasonable agr

269 Soot particles exposed to subsaturated sulfuric acid vapor exhibit a marked change in morpholog

270 positively correlated with concentrations of sulfuric acid vapor.

271 Sulfuric acid vapour is often involved in nucleation but

272 rrous ammonium sulfate hexahydrate in dilute sulfuric acid was a more stable alternative.

273 Leaching with sulfuric acid was carried out, followed by metal recover

274 ric method constituted of p-anisaldehyde and sulfuric acid was developed and avoids all of the above

275 ls (>25.0%, w/w) reaction with diphenylamine-sulfuric acid was found adequate to indicate the presenc

276 Sulfuric acid was found to be the preferred sample prese

277 nanotubes (SWNTs) in a mixture of nitric and sulfuric acids was carried out to synthesize highly wate

278 ammonia gas is stripped and passed into the sulfuric acid where ammonium sulfate and hydrogen triamm

279 sformations are conducted in the presence of sulfuric acid, which reacts with the amine substrates in

280 the multiphase oxidation of SO(2) to produce sulfuric acid, while the increase in acidity had a posit

281 trations and is capable of detecting gaseous sulfuric acid with a detection limit of less than 10(5)

282 emical oxidation of graphite in a mixture of sulfuric acid with a strong oxidizer, such as potassium

283 method was developed using methanol with 2 M sulfuric acid with incubation at 65 degrees C for 60 min

284 s to experimentally examine this reaction in sulfuric acid with oleum, which has never been reported

285 rcent for water to over 40% for concentrated sulfuric acid) with the increased concentration of sulfu

286 H2O hydrogens and a nearby S=O oxygen on the sulfuric acid, with an O...H distance of 2.05(1) A and a

287 le formation and growth involved ammonia and sulfuric acid, with limited input from organics.

288 Here, we report confinement of sulfuric acid within porous MFM-300(Cr) to give MFM-300(

289 te porphyrins on treatment with concentrated sulfuric acid yielded the free-base cyanobenzochlorins i