Chitosan-based porous carbon as a support for Zn-based catalysts in acetylene acetoxylation

Zhang, Junyu; Zhu, Fulong; Zhang, Ying; Li, Hongling; Dai, Bin

doi:10.1007/s11814-022-1109-0

Cited by 4 publications

(2 citation statements)

References 27 publications

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“…On the other hand, the C−Fe−Si catalyst (Figure 1b) revealed a completely different structural morphology with regular porous honeycomb structure. As shown later, catalysts possessing a porous structure amended large specific surface areas to expose more accessible active sites, which was beneficial for high catalytic activity during the acetalization reaction [29,30] . Compared with the pristine C−Si, the EDS profile of C−Fe−Si catalyst (Figure 1b) revealed an authentic Fe/Si molar ratio of 1 : 7, close to the anticipated value (1 : 8), which indicated that the prepared C−M−Si catalysts contained a substantial amount of Si species.…”

Section: Resultssupporting

confidence: 59%

“…As shown later, catalysts possessing a porous structure amended large specific surface areas to expose more accessible active sites, which was beneficial for high catalytic activity during the acetalization reaction. [29,30] Compared with the pristine CÀ Si, the EDS profile of CÀ FeÀ Si catalyst (Figure 1b) revealed an authentic Fe/Si molar ratio of 1 : 7, close to the anticipated value (1 : 8), which indicated that the prepared CÀ MÀ Si catalysts contained a substantial amount of Si species. Moreover, upon metal incorporation, a notable decrease in oxygen (O) content was observed for the CÀ FeÀ Si catalyst compared to the pristine CÀ Si.…”

Section: Catalyst Characterizationsupporting

confidence: 54%

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Transition Metal‐Promoted Carbon‐Silicon Solid Acid Catalysts for the Synthesis and Process Optimization of Benzaldehyde Glycol Acetal

Han

Yang

Chen

et al. 2023

Chemistry A European J

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A series of transition metal (M)-promoted carbonsilicon (CÀ MÀ Si; M = Mn, Fe, Co, Ni, Cu, Zn, Zr) solid acid catalysts with designated molar ratio of M/Si = 1 : 8 were fabricated and exploited for acetalization of benzaldehyde (BzH) with ethylene glycol (EG). The physical and chemical properties of these CÀ MÀ Si catalysts prepared by sol-gel method were characterized by various techniques, namely, SEM, EDS, TGA-DTG, BET, XRD, FTIR, XPS, and NH 3 -TPD. Among various examined acidic CÀ MÀ Si catalysts, the CÀ FeÀ Si catalyst exhibited the optimal catalytic activity with the benzaldehyde glycol acetal (BEGA) yield of 97.67 %, in excellent agreement with the value (97.88 %) predicted by the response surface methodology (RSM) based on a Box-Behnken design (BBD). CÀ FeÀ Si catalyst with the high catalytic activities and excellent stability and reusability may be ascribed to the suitable acidity and uniform surface distribution of active sites requisite for the acid-catalyzed acetalization reaction.

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Section: Resultssupporting

confidence: 59%

Section: Catalyst Characterizationsupporting

confidence: 54%

Transition Metal‐Promoted Carbon‐Silicon Solid Acid Catalysts for the Synthesis and Process Optimization of Benzaldehyde Glycol Acetal

Han

Yang

Chen

et al. 2023

Chemistry A European J

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A novel ZnO/3A catalyst with coking resistance for acetylene acetoxylation

Líu

Zhang

2023

ChemistrySelect

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A novel ZnO/3A (3A molecular sieve) catalyst was prepared by using a direct hydrolysis method and applied for acetylene acetoxylation. After optimizing the loading of Zn, we compared the catalytic performance of ZnO/3A and ZnO/AC (activated carbon), and found that catalytic performance of ZnO/3A was lower than ZnO/AC due to its weaker acetylene adsorption. ZnO/3A exhibited excellent thermal stability, which is useful for its coke resistence by removing the carbon deposition. By characterizing the fresh, deactivated and regenerated ZnO/3A catalysts, it was found that the active zinc component loss was the main cause of its deactivation, while carbon deposition did not affect catalytic performance of ZnO/3A catalyst.

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The catalytic recycle and deactivation kinetics of Zn/CMK-3 catalyst for acetylene acetoxylation

Zhang,

Wang,

Zhu

et al. 2023

Molecular Catalysis

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Chitosan-based porous carbon as a support for Zn-based catalysts in acetylene acetoxylation

Cited by 4 publications

References 27 publications

Transition Metal‐Promoted Carbon‐Silicon Solid Acid Catalysts for the Synthesis and Process Optimization of Benzaldehyde Glycol Acetal

Transition Metal‐Promoted Carbon‐Silicon Solid Acid Catalysts for the Synthesis and Process Optimization of Benzaldehyde Glycol Acetal

A novel ZnO/3A catalyst with coking resistance for acetylene acetoxylation

The catalytic recycle and deactivation kinetics of Zn/CMK-3 catalyst for acetylene acetoxylation

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