Structural assessments of kerogen-rich oil shale from the Central Kongo formation by solid-state 13C nuclear magnetic resonance and thermal processes

Bouamoud, Rajaa; Mulongo-Masamba, Raphaèl; Hamidi, Adnane El; Halim, Mohammed; Arsalane, Saı̈d

doi:10.1007/s10973-021-10699-1

Cited by 2 publications

(1 citation statement)

References 55 publications

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“…The carboxyl peak at 176 ppm in NaCMC shifted to 172 ppm in HCMC as expected 22 . The peaks at 125 and 135 ppm were from the imidazole moiety, 42 and the signals between 10 and 50 ppm assigned to aliphatic chains connected to the imidazole, 43 where peaks did not appear in NaCMC (A) and HCMC (B) due to the fact that the functionalized imidazole was not present. The peaks between 50 and 110 ppm assigned to the cellulose backbones, and the peaks between 160 and 175 ppm correspond to the carboxylic acids.…”

Section: Resultsmentioning

confidence: 75%

Kinetic study of the carbonation of epoxidized fatty acid methyl ester catalyzed over heterogeneous catalyst HBimCl‐NbCl₅/HCMC

Cai

Tolvanen

Virtanen

et al. 2021

Int J of Chemical Kinetics

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The carbonation of epoxidized vegetable oils is a crucial step in the preparation of nonisocyanate polyurethane. Several research groups have screened homogeneous catalysts such as tetra‐n‐butylammonium bromide for this reaction, but the research devoted to the use of heterogeneous catalysts and on the application of kinetic modeling is rare. Hence, to develop this process on an industrial scale, an appropriate heterogeneous catalyst should be found and a kinetic model developed. A catalyst consisting of an ionic liquid supported on carboxymethyl cellulose has been proved to be a suitable heterogeneous catalyst for this carbonation reaction. A catalyst based on 1‐hydroxypropyl‐3‐n‐butylimidazolium chloride and niobium(V) chloride supported on protonated carboxymethyl cellulose (HBimCl‐NbCl5/HCMC) was synthesized and tested for the carbonation of epoxidized fatty acid methyl ester. Effects of the catalyst particle size, agitation speed, catalyst loading, and reaction temperature on the reaction kinetics were investigated. The carbonation reaction proceeded efficiently at a temperature of 443.15 K, agitation speed of 500 rpm, and using native catalyst particles with a median diameter of 652 μm. A kinetic model was developed to simulate the conversion of the epoxide group with time.

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Section: Resultsmentioning

confidence: 75%

Kinetic study of the carbonation of epoxidized fatty acid methyl ester catalyzed over heterogeneous catalyst HBimCl‐NbCl₅/HCMC

Cai

Tolvanen

Virtanen

et al. 2021

Int J of Chemical Kinetics

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show abstract

Simultaneous thermal analysis method for studying the oil source rocks

et al. 2022

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Structural assessments of kerogen-rich oil shale from the Central Kongo formation by solid-state 13C nuclear magnetic resonance and thermal processes

Cited by 2 publications

References 55 publications

Kinetic study of the carbonation of epoxidized fatty acid methyl ester catalyzed over heterogeneous catalyst HBimCl‐NbCl₅/HCMC

Kinetic study of the carbonation of epoxidized fatty acid methyl ester catalyzed over heterogeneous catalyst HBimCl‐NbCl₅/HCMC

Simultaneous thermal analysis method for studying the oil source rocks

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Structural assessments of kerogen-rich oil shale from the Central Kongo formation by solid-state 13C nuclear magnetic resonance and thermal processes

Cited by 2 publications

References 55 publications

Kinetic study of the carbonation of epoxidized fatty acid methyl ester catalyzed over heterogeneous catalyst HBimCl‐NbCl5/HCMC

Kinetic study of the carbonation of epoxidized fatty acid methyl ester catalyzed over heterogeneous catalyst HBimCl‐NbCl5/HCMC

Simultaneous thermal analysis method for studying the oil source rocks

Contact Info

Product

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Kinetic study of the carbonation of epoxidized fatty acid methyl ester catalyzed over heterogeneous catalyst HBimCl‐NbCl₅/HCMC

Kinetic study of the carbonation of epoxidized fatty acid methyl ester catalyzed over heterogeneous catalyst HBimCl‐NbCl₅/HCMC