ライフサイエンスコーパス: montmorillonite

1 t not by aluminum-containing minerals (e.g., montmorillonite).

2 and two common clay minerals (kaolinite and montmorillonite).

3 -Mg pairs can be made for Milos- and Wyoming-montmorillonite.

4 monomers in 1 day in reactions catalyzed by montmorillonite.

5 , intermediate between that of kaolinite and montmorillonite.

6 ylenediamine within the interlayer of sodium montmorillonite.

7 accelerated 35 times in the presence of the montmorillonite.

8 at room temperature in the presence of Na(+)-montmorillonite.

9 larger than those measured in the absence of montmorillonite.

10 tetramer in length, are formed using UO2(2+)-montmorillonite.

11 n to Wyoming smectite or iron-free synthetic montmorillonite.

12 source, identification and quantification of montmorillonite.

13 ated by reduction of U(VI) on Fe(II)-bearing montmorillonite.

14 oionic forms of the aluminosilicate mineral, montmorillonite.

15 n biomolecules were adsorbed at the edges of montmorillonite.

16 or trans-sites by Fe(2+) and Fe(3+) in bulk montmorillonite.

17 served between the iron-rich nontronites and montmorillonite.

18 utive usages of the same of Fe(3+)-saturated montmorillonite.

19 nsformation when exposed to Fe(3+)-saturated montmorillonite.

20 Phenanthrene hardly degraded on Cu-montmorillonite.

21 s at several edge surfaces of the Fe-bearing montmorillonite.

22 ontmorillonites as compared to the catalytic montmorillonites.

23 f the edge surfaces of trans- and cis-vacant montmorillonites.

24 developing Fe(II) sorption models on natural montmorillonites.

25 ate the uptake of Zn on the edge surfaces of montmorillonite, a dioctahedral clay, and to explain the

26 nisms in hydrated adsorbate conformations of montmorillonite, a smectite-type clay, with ten biomolec

27 Here we report that montmorillonite accelerates the spontaneous conversion o

28 Because binding to montmorillonite (an aluminosilicate clay mineral) or cla

29 ison between rates of adsorption of Pu(V) to montmorillonite and a range of other minerals (hematite,

30 s: gelatin hydrolysate, curcumin, capsaicin, montmorillonite and AgNPs, were produced in an innovativ

31 biotically reduced clay minerals: an Fe-poor montmorillonite and an Fe-rich nontronite.

32 l phyllosilicate clay and Fe-oxide minerals, montmorillonite and goethite, fine-grained minerals that

33 anoclays (bentonite, octadecylamine-modified montmorillonite and halloysite) were studied as potentia

34 of organic sorbates in interlayers of sodium montmorillonite and hexadecyltrimethylammonium (HDTMA(+)

35 three main types of natural clay: kaolinite, montmorillonite and illite, all of which are aluminosili

36 citrate along with Mn(II) and clay minerals (montmorillonite and kaolinite) reduce Cr(VI) both in aqu

37 .09 and 0.06 nm/s in the binary systems with montmorillonite and kaolinite, respectively.

38 and low organic matter contents, abundant in montmorillonite and other expanding clay minerals.

39 the activated nucleotides in the presence of montmorillonite and other salts, alkali metal fluorides

40 radient measures from relevant samples of Ca-montmorillonite and silicalite, respectively.

41 The binding of ImpA to montmorillonite and the formation of higher oligonucleot

42 esent study aimed to explore a new source of montmorillonite and to develop an extraction and purific

43 lied to simulate the incorporated Fe in bulk montmorillonite and to explain the measured Fe K-edge X-

44 m(VI) interactions with three smectites (one montmorillonite and two nontronites - NAu1 and NAu2) wer

45 turally complex organic cations to homoionic montmorillonites and to heteroionic soils (mean absolute

46 ite, 2-line ferrihydrite), clays (kaolinite, montmorillonite) and hydroxyapatite.

47 s overlain by rocks rich in hydrated silica, montmorillonite, and kaolinite that may have formed via

48 ct the stability of Pu adsorbed to goethite, montmorillonite, and quartz across a wide range of pH va

49 tives of 5'-phosphoramidates of adenosine on montmorillonite are investigated.

50 The electron acceptor sites on the montmorillonite are postulated to be the structural Fe(I

51 When cations in raw montmorillonites are replaced by sodium ions, the result

52 nd nature of interaction of vitamin B12 onto montmorillonite as a carrier.

53 ibrium adsorption of U(IV) on Fe(II)-bearing montmorillonite as a function of pH and sodium concentra

54 ium hydroxide needed to titrate noncatalytic montmorillonites as compared to the catalytic montmorill

55 re intercalated into the interlayer space of montmorillonites as deduced from the increase of the bas

56 er films onto external surfaces of Cs and Na montmorillonites as function of partial water pressure.

57 Experiments with both quartz and montmorillonite at 5 muM H2O2 desorbed far less Pu than

58 tent of reduction of U(VI) by Fe(II)-bearing montmorillonite at different pH values and sodium concen

59 degrees C; and (3) plutonium sorbed to SWy-1 montmorillonite at room temperature.

60 The spillover of the montmorillonite basal plane electric double layer to the

61 Bacteria rarely formed aggregates with montmorillonite, but were more tightly adsorbed onto goe

62 tion with migration of interlayer cations of montmorillonite (Ca(2+)and Na(+)) to the edges a cationi

63 that under dry conditions in the presence of montmorillonite, catalysis occurs with respect to genera

64 This research establishes that the montmorillonite catalyst limits the number of RNA oligom

65 y, the reaction kinetics of Fe(3+)-saturated montmorillonite catalyzed 17beta-estradiol (betaE2) tran

66 ng the sequence- and regioselectivity in the montmorillonite-catalyzed formation of RNA dimers and tr

67 ucture of phosphate-activating groups on the montmorillonite-catalyzed oligomerization of the 5'-phos

68 The effects of amine structure on the montmorillonite-catalyzed oligomerization of the 5'-phos

69 The montmorillonite-catalyzed reactions of the 5'-phosphorim

70 The montmorillonite-catalyzed reactions of the 5'-phosphorim

71 - and regioselectivity of the RNAs formed in montmorillonite-catalyzed reactions.

72 oligomerization process indicating that the montmorillonite-catalyzed RNA synthesis is not affected

73 Two adsorbents, Montmorillonite Clay (MC) and Granular Activated Carbon

74 CWD-positive brain homogenate was mixed with montmorillonite clay (Mte), lyophilized, pulverized and

75 CWD endemic areas in Colorado; and purified montmorillonite clay (Mte), previously shown to bind pri

76 Supported on montmorillonite clay and using Ce(IV) as a chemical oxid

77 f supercritical (sc) CO(2) with Na saturated montmorillonite clay containing a subsingle layer of wat

78 c films, ammonium chloride salt crystals and Montmorillonite clay, previously proposed to promote pol

79 eterogeneous oligocytidylates, formed by the montmorillonite clay-catalysed condensation of actuated

80 The montmorillonite clay-catalyzed reactions of nucleotides

81 of the 5'-phosphorimidazolide of cytidine on montmorillonite clay.

82 t, enables the discrimination of illite from montmorillonite clays that typically develop in large de

83 geocolloids (i.e., homoionized kaolinite and montmorillonite clays).

84 xadecyltrimethylammonium (HDTMA(+))-modified montmorillonite clays.

85 es for the 140 degrees C colloids and the Pu-montmorillonite colloids were similar while the desorpti

86 Aging of both K- and Ca-exchanged montmorillonite complexes at elevated CO(2) pressure for

87 ignificantly between the K- and Ca-exchanged montmorillonite complexes.

88 ce area in many subsurface environments, and montmorillonite-containing materials are used in the sto

89 ion and purification protocols increased the montmorillonite content from 21.8-25.1% in the raw clay

90 n (CTS) solutions supplemented with chitosan-montmorillonite (CTS-MMT) nanocomposites at various conc

91 thymol, as the active additive, and modified montmorillonite (D43B) at two different concentrations.

92 replaced by sodium ions, the resulting Na(+)-montmorillonite does not catalyze oligomer formation bec

93 electrostatic attraction between Ag and the montmorillonite edge at low ionic strength, whereas a re

94 ite basal plane electric double layer to the montmorillonite edge may screen the electrostatic attrac

95 At pH values below the IEP of montmorillonite edge site, montmorillonite reduced the s

96 forms bidentate and tridentate complexes on montmorillonite edge surfaces, whereas As(V) monodentate

97 The exchangeable cation associated with the montmorillonite effects the observed catalysis with Li+,

98 Sorption of pyrene on Cu-montmorillonite enhanced its degradation, but grinding o

99 ngth, whereas a repulsion between TiO(2) and montmorillonite face sites may restabilize the mixture.

100 a 10-mer), the presence of mineral surfaces (montmorillonite for nucleotides, illite and hydroxylapat

101 adsorption properties of biomolecules to the montmorillonite for preparation of nano-engineered nano/

102 GB1 was exposed to the soil minerals montmorillonite, goethite, kaolinite, and birnessite at

103 y clearly demonstrated that Fe(3+)-saturated montmorillonite has a great potential to be used as a co

104 Since at low pH montmorillonite has a negatively charged basal plane and

105 Fe(3+) in Texas-montmorillonite has a tendency to form clusters, while n

106 It was noted that noncatalytic montmorillonites have a higher negative charge on their

107 Our results confirm that chitosan-montmorillonite hydrogels are able to recruit native cel

108 herms were measured on a synthetic iron-free montmorillonite (IFM) under anoxic conditions (O2 <0.1 p

109 ormation in the presence of Fe(3+)-saturated montmorillonite in an aqueous system was detected.

110 CO2 (10(-6)-10(-7) cm(2)/s) indicate that Ca-montmorillonites in approximately 1W hydration states ca

111 ed in the presence of Na(+)-volclay (a Na(+)-montmorillonite) in pH 8 aqueous solution at 25 degrees

112 mography enable direct imaging of the EDL at montmorillonite interfaces in monovalent electrolytes wi

113 Of the 22 montmorillonites investigated, 12 were catalysts.

114 ous research has shown that Fe(3+)-saturated montmorillonite is effective in quickly transforming phe

115 The clay montmorillonite is known to catalyze the polymerization

116 nd simulation results suggested that iron in montmorillonite is preferentially incorporated as Fe(3+)

117 I)/(III) content, indicates that ferruginous montmorillonite is the dominant mineralogical component.

118 Fe in the synthetic montmorillonites is principally present as structural Fe

119 The radiolysis of water confined in montmorillonites is studied as a function of the composi

120 u among ferrihydrite, leaf compost (LC), and montmorillonite (K-SWy2) were established using compartm

121 e presence of iron powder as a reductant and montmorillonite K10 as a catalyst in aqueous citric acid

122 Montmorillonite K10 favored cyclization to bicyclononane

123 upane epoxides under acidic conditions (HCl, montmorillonite K10, and BF(3).Et(2)O) were studied.

124 n trifluoride etherate) or aluminosilicates (montmorillonite K10, halloysite nanotubes), we found tha

125 ust, scalable, and highly diastereoselective montmorillonite K10-promoted allylation reaction between

126 stituted pyrroles using iodine-catalyzed and montmorillonite KSF-clay-induced modified Paal-Knorr met

127 the magnitude of the negative charge on the montmorillonite lattice and the number of cations associ

128 he tetravalent and trivalent elements in the montmorillonite lattice with trivalent and divalent meta

129 edge surface reactive sites of a cis-vacant montmorillonite layer using first-principles molecular d

130 B12 molecules gradually diffused in between montmorillonite layers.

131 g/L smectite suspensions were investigated-a montmorillonite (MAu-1) and two nontronites (NAu-1 and N

132 paper, the combined effect of mineral (i.e. montmorillonite, MMC) and chemical contents (i.e. Ca and

133 ite nanoparticles of graphene oxide (GO) and montmorillonite MMt (GO-MMt) by ultrasound treatments.

134 to produce films with different contents of montmorillonite (MMT) as a nanoreinforcement material.

135 Pyrene removal by polycation-montmorillonite (MMT) composites and granulated activate

136 poly vinylpyridinium-co-styrene (QPVPcS) to montmorillonite (MMT) was designed for the removal of th

137 In montmorillonite (MMT), a common clay mineral in soils, s

138 o fining agents, such as the commercial clay montmorillonite (MMT), bentonite.

139 full factorial design with varying levels of montmorillonite (MMTNa) and encapsulated tocopherol (toc

140 clarified acerola juice (CAJ) as affected by montmorillonite (Mnt) at different concentrations (0-6wt

141 stigate the binding characteristics of Cd on montmorillonite(Mont)-humic acid(HA)-bacteria composites

142 s, such as polyvinyl alcohol (PVA) or sodium montmorillonite (MTM), inducing a change in RTP waveleng

143 echanism of Fe(II) on an iron-free synthetic montmorillonite (Na-IFM).

144 glycine (Gly-zw) onto the surface of sodium montmorillonite (Na-MMT).

145 ctionalized with nisin (NS), reinforced with montmorillonite nanoclay (nMMT) were fabricated by uniax

146 The composite electrode was made of sodium montmorillonite nanoclay (SMM) and gold nanoparticles mo

147 Layer-by-layer assembled 2D montmorillonite nanosheets are shown to be high-performa

148 oncurrently doped with beta-cyclodextrin and montmorillonite nanosheets that are synthesized in one-s

149 Release assessment of organo-modified montmorillonite (O-MMT) nanoclay and the organo-modifier

150 rene occurred when it was in contact with Na-montmorillonite or birnessite.

151 The presence of suspended smectite clay (montmorillonite or hectorite, 1.75 g/L) or dissolved hum

152 ing sodium caseinate as the first layer, and montmorillonite particles as the second layer, under two

153 Whereas montmorillonite (pH 7) produced only dimers and traces o

154 icient sodium ions to the interlayers of the montmorillonite platelets to prevent the activated monom

155 Clays such as montmorillonite provide substantial amounts of the react

156 arbonate ions, and common minerals (calcite, montmorillonite, quartz, and kaolinite).

157 below the IEP of montmorillonite edge site, montmorillonite reduced the stability of both negatively

158 loadings comparable to the experiments with montmorillonite, revealed no significant cooperative int

159 The Ca-exchanged montmorillonite samples continued to expand over periods

160 Expansion of K-exchanged montmorillonite samples was rapid, occurring on time sca

161 Magnetite, birnessite, and Na- and Cu-montmorillonite samples were loaded with pyrene or phena

162 .3 nm, then a total energy transfer from the montmorillonite sheets to the interlayer space occurs, a

163 rmed with colloids (clays: kaolinite KGa-1b, montmorillonite STx-1b).

164 e been measured on low structural Fe-content montmorillonite (STx) and high structural Fe-content mon

165 nder anoxic conditions on natural Fe-bearing montmorillonites (STx, SWy, and SWa) having different st

166 ge XAS spectra of Wyoming-, Milos- and Texas-montmorillonites suggested that iron is present as Fe(3+

167 ated when enough interaction existed between montmorillonite surface charges and vitamin biomolecules

168 ater potential for cation-pi interactions on montmorillonite surfaces.

169 y diffraction shows that K- and Ca-exchanged montmorillonites swell upon interacting with CO(2) at am

170 In contrast, Ca-exchanged montmorillonite swells more slowly, but reaches a maximu

171 K-exchanged montmorillonite swells rapidly to a maximum d(001) of ap

172 , we found that the Fe-bearing clay minerals montmorillonite SWy-2 and nontronite NAu-2 enhanced nitr

173 ts by bioreduced iron-bearing clay minerals (montmorillonite SWy-2 and nontronite NAu-2).

174 llonite (STx) and high structural Fe-content montmorillonite (SWy) under anoxic (O2 < 0.1 ppm) and st

175 erties of three source clay minerals-Na-rich montmorillonite (SWy-2), illite-smectite mixed layer (IS

176 ter [UO(2)(O(2))(OH)](60)(60-) (U(60)) to Na-montmorillonite (SWy-2), plagioclase (anorthite), and qu

177 of magnitude on the unreduced, Fe(III)-rich montmorillonites (SWy and SWa).

178 ing behavior of Na(+)-, NH(4)(+)-, and Cs(+)-montmorillonites (SWy-2) in supercritical fluid mixtures

179 Reference experiments with Fe-free synthetic montmorillonite SYn-1 provided supporting evidence for t

180 a natural kaolinite (KGa-1b) and a synthetic montmorillonite (Syn-1).

181 iron oxide, hematite, iron-coated sand, and montmorillonite that were pre-equilibrated with 0.05-1.5

182 on of a (22)Na(+) tracer in compacted sodium montmorillonite, that is, transport directed from a low

183 the interlayer surfaces of Fe(3+)-saturated montmorillonite, the major reason for the observed >84%

184 died as a function of the composition of the montmorillonite, the nature of the exchangeable cation,

185 The protonated montmorillonite, titrated to pH 6-7, serves as a catalys

186 tial results indicated improved stability at montmorillonite to caseinate emulsion ratios of 2:1 at p

187 t produced nanoparticles, Ag and TiO(2), and montmorillonite to determine how heteroaggregation can a

188 The catalytic ability of montmorillonite to form dinucleotides and oligonucleotid

189 sphate (5'-AMP or pA) in the presence of the montmorillonite to form NH2pA3'pA, A5'ppA3'pA, and pA3'p

190 of the exposure of variably hydrated Ca-rich montmorillonites to supercritical CO2 and CO2-SO2 mixtur

191 measured H(2)(g) adsorption on Na synthetic montmorillonite-type clays and Callovo-Oxfordian (COx) c

192 om 10 to 40 mM ImpA in the presence of Na(+)-montmorillonite using the computer program SIMFIT.

193 (ferrihydrite, goethite, kaolinite, illite, montmorillonite) using the CuO-oxidation technique, alon

194 ion of the protocol to bentonites other than montmorillonite was demonstrated.

195 distribution in Milos-, Wyoming-, and Texas-montmorillonite was determined by combining X-ray absorp

196 In this work, Pu(V) and Np(V) sorption to Na-montmorillonite was examined as a function of ionic stre

197 Pu(V) sorption to Na-montmorillonite was examined over a wide range of initia

198 as significantly enhanced when Cs(+)-exposed montmorillonite was irradiated and then analyzed using S

199 The binding of ImpA to montmorillonite was measured, and the adsorption isother

200 Surface-bound U(VI) on unreduced montmorillonite was more easily extracted into solution

201 xtensive structural Fe(III) reduction within montmorillonite was observed at 0% O(2).

202 Pu(IV) sorption to montmorillonite was studied at initial concentrations of

203 The larger negative charge on these montmorillonites was demonstrated by the almost 2-fold g

204 se aromatic cationic amine sorption to Na/Ca-montmorillonite well beyond the extent expected by catio

205 icles, ordered mesoporous silica SBA-15, and montmorillonite were used as templates for achieving mes

206 of adsorption to interlayer sites within the montmorillonite, which is an expandable phyllosilicate.

207 ate the interlayers between the platelets of montmorillonites, which blocks the binding of the activa

208 precipitates were formed on the Fe(III)-rich montmorillonite, while sorbed Fe is predominantly presen

209 The 140 degrees C sample contained only montmorillonite, while zeolite and other phases were pre

210 Treating the montmorillonite with dilute hydrochloric acid replaces t

211 chloric acid replaces the cations on the raw montmorillonite with protons.

212 Synthetic montmorillonites with increasing structural Fe(III) subs

213 Cu redistribution toward organic matter and montmorillonite, with small amounts of Cu retained by fe

214 yladenine and 3-methyladenine derivatives on montmorillonite yielded oligoadenylates as long as undec

215 e 2-methyladenine and adenine derivatives on montmorillonite yielded oligomers up to hexamers and pen