ZIF-derived Co/NCNTs as a superior catalyst for aromatic hydrocarbon resin hydrogenation: Scalable green synthesis and insight into reaction mechanism

Wu, Chenghong; Chen, Xiaopeng; Fu, Jiawei; Zou, Jiezhong; Liang, Jiezhen; Wei, Xiaojie; Wang, Linlin

doi:10.1016/j.cej.2022.136193

Cited by 13 publications

(4 citation statements)

References 55 publications

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“…(2) Main reaction: It is well known that the isobutane alkylation reaction follows the classic carbonium ion mechanism by Schmerling et al [ 18 , 32 ]. According to the classic carbonium ion mechanism, the unsaturated double bond in butene seizes H + in the acid catalyst to form C 4 + , and C 4 + further undergoes isomerization to generate the more stable tert-butyl carbocation (i-C 4 + ).…”

Section: Resultsmentioning

confidence: 99%

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Investigation of a Complex Reaction Pathway Network of Isobutane/2-Butene Alkylation by CGC–FID and CGC-MS-DS

Liu²,

Chen

et al. 2022

Molecules

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The mechanism of reaction in isobutane/2-butene alkylation systems is extremely complicated, accompanied by numerous side reactions. Therefore, a comprehensive understanding of the reaction pathways in this system is essential for an in-depth discussion of the reaction mechanism and for improving the selectivity of the major products (clean fuel blend components). The alkylation of isobutane/2-butene was studied using a self-made intermittent reaction device with a metering, cooling, reaction, vacuum and analysis system. The alkylates were qualitatively and quantitatively analyzed using a capillary gas chromatography-mass spectrometry-data system (CGC-MS-DS) and capillary gas chromatography with flame ionization detection (CCGC-FID), respectively, and the precision and recovery of the quantitative analytical methods were verified. The results showed that the relative standard deviation (RSD) of the standard sample was below 0.78%, and the recoveries were from 98.53% to 102.85%. Under the specified reaction conditions, 79 volatile substances were identified from the alkylates, and the selectivity of C8 and trimethylpentanes (TMPs) reached 63.63% and 53.81%, respectively. The changes of the main chemical components in the alkylation reaction with time were tracked and analyzed, based on which reaction pathways were determined, and a complex reaction network containing the main products’ and the by-products’ generation pathway was constructed.

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Section: Resultsmentioning

confidence: 99%

“…The reaction pathway and the reaction kinetics are important to design and optimize the reaction process [ 18 ]. At the beginning of the 1940s, Schmerling [ 19 , 20 ] suggested a mechanism to describe the process of alkylation for olefins and isobutanes based on the ionic principle.…”

Section: Introductionmentioning

confidence: 99%

Investigation of a Complex Reaction Pathway Network of Isobutane/2-Butene Alkylation by CGC–FID and CGC-MS-DS

Liu²,

Chen

et al. 2022

Molecules

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“…44 Hydrogenation is a typical gas-liquid two-phase reaction. 45,46 It is noteworthy that HR is insoluble in water, and the organic solvent cyclohexane is usually used to dissolve HR in industrial processes. 39,47 In comparison, the viscosity of water was 1.0 mPaÁs and the surface tension was 72.8 mN/m, 48 while the viscosity of cyclohexane hydrocarbon resin solution (CHR solution) at 5% concentration was 1.6 mPaÁs and the surface tension was 26.43 mN/m; the viscosity of CHR solution at 15% concentration was 1.8 mPaÁs and the surface tension was 25.52 mN/m.…”

Section: Introductionmentioning

confidence: 99%

“…In this reaction system, H 2 is present in the form of bubbles in the liquid phase, and the behavior of the H 2 bubbles significantly affects the mass transfer between the gas and liquid phases in the non‐homogeneous gas–liquid phase reaction 44 . Hydrogenation is a typical gas–liquid two‐phase reaction 45,46 …”

Section: Introductionmentioning

confidence: 99%

Motion and interaction of in‐line bubbles in quiescent non‐aqueous solutions of hydrocarbon resin

Mei,

Luo,

Zhang

et al. 2024

Asia-Pacific J Chem Eng

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Hydrocarbon resin (HR) is an essential fine chemical. The preparation and application process of HR involves lots of gas–liquid heterogeneous reactions, and the bubbly flow behavior influences them significantly. Using high‐speed photography and digital image processing techniques, the motion and interaction of in‐line bubbles in non‐aqueous solutions of HR are examined in this article. The results show a critical gas flow rate that can change the bubbling regime. It can be observed that viscosity features prominently in changing the shape of bubbles and their motion. As the viscosity increases, the bubbles are more prone to coalescence, and the bubble coalescence process gradually changes from connected slip‐rising coalescence to connected‐rising coalescence. The viscosity transition region between non‐coalescent and coalescent systems in non‐aqueous solutions of HR occurs at 3.6–9.2 mPa·s. Further, a force analysis shows that in paired bubbles, the leading bubble can be viewed as an individual bubble unaffected by trailing bubble before the two bubbles collide, but in the wake of the leading bubble, the drag force on the trailing bubble decreases and the added mass force increases.

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Effect of Pore Structure on the Performance of Mo-Ni Catalysts for Petroleum Resin Hydrogenation

Niu,

Shi,

Sun

et al. 2024

Catal Lett

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ZIF-derived Co/NCNTs as a superior catalyst for aromatic hydrocarbon resin hydrogenation: Scalable green synthesis and insight into reaction mechanism

Cited by 13 publications

References 55 publications

Investigation of a Complex Reaction Pathway Network of Isobutane/2-Butene Alkylation by CGC–FID and CGC-MS-DS

Investigation of a Complex Reaction Pathway Network of Isobutane/2-Butene Alkylation by CGC–FID and CGC-MS-DS

Motion and interaction of in‐line bubbles in quiescent non‐aqueous solutions of hydrocarbon resin

Effect of Pore Structure on the Performance of Mo-Ni Catalysts for Petroleum Resin Hydrogenation

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