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1 components, including dodecane, toluene, and asphaltene).
2 ed using 6.461 keV radiation for a petroleum asphaltene.
3 ely nitrogen content, and the aromaticity of asphaltenes.
4 , and dynamic information on the behavior of asphaltenes.
5  mimic the physical and chemical behavior of asphaltenes.
6 d adsorbents (NiO and Fe(2)O(3)) in removing asphaltenes.
7 s and aromatics, but increases in resins and asphaltenes.
8 sis of large nonvolatile analytes, including asphaltenes.
9  of especially challenging analytes, such as asphaltenes.
10                                              Asphaltene 1 changed the contact angle of dolomite from
11 mite from 53.85 degrees to 90.51 degrees and asphaltene 2 from 53.85 degrees to 100.41 degrees .
12 ation at 300 degrees C exhibited the highest asphaltene adsorption capacity (q = 558 mg/g) among all
13                        In the competition of asphaltene adsorption capacity by NPs, iron oxide NPs ha
14 ) aerogel with significantly higher (~ 135%) asphaltene adsorption capacity than Fe(2)O(3)(P-600).
15 ydrogen bonds on the surface, thus improving asphaltene adsorption due to polar interaction.
16 howed that the most effective parameters for asphaltene adsorption onto these NPs are the asphaltene
17  can assist in a better understanding of the asphaltene adsorption phenomenon and the role of iron ox
18 ic changes in the drop shape, as a result of asphaltene adsorption, are captured and the drop profile
19 and find new and reliable methods to prevent asphaltene adsorption.
20          In this research, the phenomenon of asphaltenes adsorption in the presence and absence of wa
21 rption has a significant contribution to the asphaltenes adsorption on the surface of iron oxides and
22 ater phase, it could be pointed out that the asphaltenes adsorption onto the NPs was accompanied by a
23 -stacking and hydrogen bonding interactions, asphaltene aggregates can form a thin layer at the crude
24 influence of water in oil micro-emulsions on asphaltene aggregation and deposition phenomena at eleva
25                             Efforts to model asphaltene aggregation are briefly discussed, and a prog
26                                    Following asphaltene aggregation phenomenon through pai-stacking a
27  of catalytic hydroprocessing, "heavy ends" (asphaltenes) analysis, corrosion, etc.
28      A model oil solution was prepared using asphaltene and heptol and the effect of static and dynam
29 ct compared to the traditional processing of asphaltene and lower production cost compared to other F
30                          Characterization of asphaltenes and NPs was performed using Fourier transfor
31  oils that generally present high amounts of asphaltenes and resins.
32  same compositional space as coal, heavy oil asphaltenes, and coal tar and correspond to condensed ri
33                      Ozone attack on resins, asphaltenes, and soil organic matter led to the producti
34                                          The asphaltenes are a diverse and complex mixture of organic
35 ty in toluene and insolubility in n-heptane, asphaltenes are a highly aromatic, polydisperse mixture
36                                     Although asphaltenes are critically important to the exploitation
37                                              Asphaltenes are high-boiling and recalcitrant compounds
38                                              Asphaltenes are identified as the major source of sulphu
39                         L2MS mass spectra of asphaltenes are insensitive to laser pulse energy and ot
40 itial absorbance of the oil is measured, and asphaltenes are removed from the oil by the addition of
41 plex mixtures of organic molecules, of which asphaltenes are the heaviest component.
42                          Following refining, asphaltenes are typically combusted for reuse as fuel or
43                       The bulk properties of asphaltenes arise from a broad range of polycyclic aroma
44 distribution and cross sections of petroleum asphaltene (ASPH) and deasphaltened oils (DAO).
45                          The aromaticity and asphaltene average molar mass are also correlated with I
46 exity, modelling the self-association of the asphaltenes can be a very computationally-intensive task
47                 Here, we show that low-value asphaltenes can be converted into a high-value carbon al
48                                To understand asphaltene characteristics and reactivity, the field has
49 ion technique, where it was established that asphaltene coloration correlated linearly with asphalten
50                                              Asphaltenes, complex molecules in crude oil, cause signi
51 asphaltene adsorption onto these NPs are the asphaltene composition, namely nitrogen content, and the
52                                              Asphaltenes comprise the heaviest and least understood f
53 e and more than 70% in a dynamic state at an asphaltene concentration of 2000 ppm.
54                                              Asphaltenes constitute the heaviest and most complicated
55                                              Asphaltenes constitute the heaviest, most polar and arom
56  apparatus and method for the measurement of asphaltene content in crude-oil samples.
57 (maltenes) is then measured, and the initial asphaltene content is revealed by the change in absorban
58 microfluidic approach described here permits asphaltene content measurement in less than 30 min as op
59    It is thought that in nanoaggregate form, asphaltenes create elastic layers around water droplets
60 monstrated with the analysis of black shale, asphaltene, crude oil and kerogen samples.
61 ted from the digested solution (black shale, asphaltene, crude oil and kerogen) by extraction in isoo
62                                Specifically, asphaltene deposition and related flow assurance problem
63 on of divalent cations with monovalent ones, asphaltene deposition is repelled and the solid surface
64 ound that the type of flow state affects the asphaltene deposition kinetics.
65 g, were fabricated on metal surfaces and the asphaltene deposition on these coated surfaces was exami
66 tic and dynamic flow states on the amount of asphaltene deposition on uncoated electrodes, PTFE coate
67 e PTFE coating is more effective in reducing asphaltene deposition than nanosilica coating.
68 n formation of water in oil micro-emulsions, asphaltene deposition, and induced water wettability tra
69 ucalyptus nanocomposite (NCs) for inhibiting asphaltene deposition.
70 dies addressed this technique for preventing asphaltene deposition.
71 onverted into a high-value carbon allotrope, asphaltene-derived flash graphene (AFG), via the flash j
72 situated in the para phase, which are mainly asphaltenes, emphasising their high oxidizability.
73 on indicated that pressure and the amount of asphaltene exert the most significant negative and posit
74 ployed for the adsorption of Ap1, a specific asphaltene extracted from Iranian crude oil.
75 ueous IFT of the tars, as well as resins and asphaltenes extracted therefrom, were measured over a ra
76 nty to physico-chemical heterogeneity of the asphaltene fraction driven by variation in molecular siz
77 n resonance mass spectrometer to analyze the asphaltene fraction of a crude oil.
78 organics content and saturate-aromatic-resin-asphaltene fractionation.
79                                   We treated asphaltenes from North and South American crude oils wit
80                          Two subfractions of asphaltenes having contrasting affinities to the water-o
81 lty is the presence of highly surface-active asphaltenes in petroleum.
82 te the self-association concentration of the asphaltenes in toluene using a changepoint regression mo
83                               Here we report asphaltene mass spectra recorded with two-step laser mas
84                      Historically, molecular asphaltene modeling was limited to commercial compounds,
85 s contribute to a long-standing debate about asphaltene molecular architecture.
86 and other parameters, demonstrating that the asphaltene molecular weight distribution can be measured
87 e the controversy from LDI, showing that the asphaltene molecular weight distribution peaks near 600
88 tunnelling microscopy to study more than 100 asphaltene molecules.
89 ve a critical concentration in pure solvent, asphaltene "monomers" self-associate and form nanoaggreg
90                                              Asphaltene nanoaggregates are thought to play a signific
91 idal analysis shown to successfully identify asphaltene nanoaggregation in toluene.
92                                         Five asphaltenes of different origins, four NPs as adsorbents
93 ate thermophilic bacteria, the adsorption of asphaltene on both minerals increased between 180 and 29
94                            The adsorption of asphaltene on the rock surface and the changes in its we
95                                Adsorption of asphaltenes on dolomite rocks previously aged with bacte
96 microorganisms can elevate the adsorption of asphaltenes on reservoir rock minerals, posing a potenti
97                                          The asphaltene optical densities correlated linearly with co
98  specifically saturate, aromatic, resin, and asphaltene percentages (SARA) based off linear relations
99 ion renders it an attractive method to study asphaltene phase properties.
100 r and aromaticity of the archipelago-derived asphaltene photoproducts suggest the occurrence of photo
101                  The complexity and range of asphaltene polycyclic aromatic hydrocarbons are establis
102 exity, the solid component of crude oil, the asphaltenes, poses an exceptional challenge for structur
103                                              Asphaltene precipitation and deposition have been recogn
104                                              Asphaltene precipitation and its adsorption on different
105 meability impairment by over 50% and reduced asphaltene precipitation by up to 4.00 wt.% during natur
106                                              Asphaltene precipitation during natural depletion can le
107                                  Determining asphaltene precipitation experimentally is time-consumin
108                                              Asphaltene precipitation in carbonate reservoirs present
109     This research aims to accurately predict asphaltene precipitation values using an extensive datab
110 eveloped models in this study could forecast asphaltene precipitation values with an absolute error o
111 gm have a satisfactory agreement with actual asphaltene precipitation values.
112 mples were treated as input variables, while asphaltene precipitation was the output of the models.
113 lity alteration to water-wet, and preventing asphaltene precipitation.
114  fast and precise techniques for determining asphaltene precipitation.
115 gests an alternative pathway to the existing asphaltene processing that directs toward a higher value
116 s of organic radicals were distinguished: an asphaltene radical species typically found in crude oil
117                                         Pure asphaltene radicals are resonance stabilized over a poly
118  a highly effective inhibitor for mitigating asphaltene-related formation damage in carbonate reservo
119  of successful applications that address key asphaltene-related problems highlight the advances of mi
120                                  Conversely, asphaltene, resin, and heating rate positively correlate
121 rising a pendent water drop surrounded by an asphaltene-rich organic phase is exposed to a DC uniform
122                                  A petroleum asphaltene sample is fractionated by a silica-gel cyclog
123 ed to obtain the bulk characteristics of the asphaltene sample.
124 the production of water-soluble species from asphaltene samples is key to understanding the contribut
125  thermophilic bacteria) on the adsorption of asphaltene samples isolated from two different crude oil
126                                In this work, asphaltene samples with enriched mass fractions of eithe
127 es API gravity, and saturated-aromatic-resin-asphaltene (SARA) fractions of the crude oil samples wer
128  oils into saturates, aromatics, resins, and asphaltenes (SARA), followed by effect-directed analyses
129 containing saturates, aromatics, resins, and asphaltenes (SARA), was partially oxidized, resulting in
130 er side-chains can cause an earlier onset of asphaltene self-association.
131 onene, graphite, and paraffin standards, the asphaltene spectrum is seen to be composed of contributi
132 ned to synthetic model compounds that mirror asphaltene structure, aggregation behavior, and thermal
133 as represented in the "archipelago model" of asphaltene structure.
134 erformed to investigate the coupling between asphaltene structures and velocity measurements and thei
135 f the field (E(0)) and concentrations of the asphaltene subfractions (C) are used to calculate adsorp
136                                              Asphaltene, the most resistant component of bitumen, con
137 ersian Gulf water were used for three-phase (asphaltene/toluene solution + NPs + water) experiments.
138 sorption experiments were performed in two- (asphaltene/toluene solution + NPs) and three-phase syste
139 phaltene coloration correlated linearly with asphaltene weight content.
140  most classes of polar compounds, except for asphaltenes, which exhibited lower recoveries (82%) due
141 ing process of petroleum crude oil generates asphaltenes, which poses complicated problems during the

 
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