Partial hydrogenation of dimethyl oxalate on Cu/SiO2 catalyst modified by sodium silicate

Huang, Huijiang; Wang, Bo; Wang, Yue; Zhao, Yujun; Wang, Shengping; Ma, Xinbin

doi:10.1016/j.cattod.2019.08.048

Cited by 31 publications

(26 citation statements)

References 34 publications

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“…For instance, Huang et al reported an Na 2 SiO 3 -modified Cu/SiO 2 catalyst, which achieves an 83% MG yield with 99.8% selectivity. 12 Despite the above advances, it is also unlikely to achieve outstanding MG selectivity over Cu/SiO 2 catalyst analogues at ultra-deep DMO conversion (≥99.9%) because of the irreconcilable conflict between selectivity and conversion presented in the Cu-catalyzed DMO-to-MG process. 19 The relatively poor hydrogenation activity of Ag, especially for the DMO-to-MG process, 20 made it attractive, providing particular impetus for research on Agbased catalysts by supporting Ag nanoparticles on silica (SiO 2 , 1 MCM-41, 9 KCC-1, 21 SBA-15 22 ) and carbon (CNTs, active carbon 23 ) supports.…”

Section: ■ Introductionmentioning

confidence: 99%

High-Performance Ni₃P/meso-SiO₂ for Gas-Phase Hydrogenation of Dimethyl Oxalate to Methyl Glycolate

Zhao

et al. 2021

ACS Sustainable Chem. Eng.

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Three meso-SiO 2 (RB-MSN, HMS, and MCM-41) supported Ni 3 P catalysts to be used in gas-phase hydrogenation of dimethyl oxalate (DMO) to methyl glycolate (MG) are prepared via the impregnation method and subsequent H 2 -reduction treatment. The as-obtained catalysts show interesting meso-SiO 2type-dependent reactivity for this reaction, which is tightly linked with the support Si−OH amount rather than the support textural/ structural properties and Ni 3 P grain size. The Ni 3 P/RB-MSN outperforms the two others, being capable of fully converting DMO with 85.0% MG selectivity and being stable for at least 500 h under mild conditions. The turnover frequency and E a of such a catalyst for this reaction are calculated to be 204.2 h −1 and 84.0 kJ mol −1 . Lack of Si−OH in RB-MSN diminishes the interaction of NiO and PO x with Si−OH groups, thereby not only enabling NiO and PO x to be easily and fully reduced to form Ni 3 P but also suppressing the formation of harmful irreducible PO x species.

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Section: ■ Introductionmentioning

confidence: 99%

High-Performance Ni₃P/meso-SiO₂ for Gas-Phase Hydrogenation of Dimethyl Oxalate to Methyl Glycolate

Zhao

et al. 2021

ACS Sustainable Chem. Eng.

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“…Since Cu 0 is supposed to be hydrogenation-active, suppressing Cu 0 concentration should improve the selectivity of MG. Thus, sodium silicate was impregnated into CuPS-cats powder prepared by AE method, intentionally to increase the formation of Si-O-Cu bonds, to limit surface concentration of Cu 0 [89]. As expected, the reducibility of Cu cations was decreased with additional sodium silicate.…”

Section:  Mg As the Hydrogenated Productmentioning

confidence: 81%

“…Sometimes, MG is a desired product of DMO hydrogenation. Partial inhibition of DMO hydrogenation to produce high yield of MG using CuPS-cats was proposed [84,89]. Since Cu 0 is supposed to be hydrogenation-active, suppressing Cu 0 concentration should improve the selectivity of MG.…”

Section:  Mg As the Hydrogenated Productmentioning

confidence: 99%

Copper Phyllosilicates-Derived Catalysts in the Production of Alcohols from Hydrogenation of Carboxylates, Carboxylic Acids, Carbonates, Formyls, and CO2: A Review

Lin

2021

Catalysts

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Copper phyllosilicates-derived catalysts (CuPS-cats) have been intensively explored in the past two decades due to their promising activity in carbonyls hydrogenation. However, CuPS-cats have not been completely reviewed. This paper focuses on the aspects concerning CuPS-cats from synthesis methods, effects of preparation conditions, and dopant to catalytic applications of CuPS-cats. The applications of CuPS-cats include the hydrogenation of carboxylates, carboxylic acids, carbonates, formyls, and CO2 to their respective alcohols. Besides, important factors such as the Cu dispersion, Cu+ and Cu0 surface area, particles size, interaction between Cu and supports and dopants, morphologies, and spatial effect on catalytic performance of CuPS-cats are discussed. The deactivation and remedial actions to improve the stability of CuPS-cats are summarized. It ends up with the challenges and prospective by using this type of catalyst.

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“…Methyl glycolate (MG), containing both hydroxyl and ester groups, is an important fine chemical [ 1 , 2 , 3 ]. As it has similar chemical properties to alcohol and ester, MG can undergo various reactions such as carbonylation, hydrolyzation, and oxidation [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

“…Thus, the development of a green synthetic method with high efficiency is warranted. The synthesis of MG by catalytic hydrogenation of dimethyl oxalate (DMO) has been proposed as a more economical and environmentally friendly route compared with other catalytic procedures [ 2 , 3 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Ni-Modified Ag/SiO2 Catalysts for Selective Hydrogenation of Dimethyl Oxalate to Methyl Glycolate

et al. 2022

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Ni-modified Ag/SiO2 catalysts containing 0~3 wt.% Ni were obtained by impregnating Ni species onto Ag/SiO2 followed by calcination and reduction. The catalysts’ performance in the hydrogenation of dimethyl oxalate (DMO) to methyl glycolate (MG) was tested. Ag-0.5%Ni/SiO2 showed the highest catalytic activity among these catalysts and exhibited excellent catalytic stability. The effects of the Ni content on the structure and surface chemical states of catalysts were investigated by XRF, N2-sorption, XRD, TEM, EDX-mapping, FT-IR, H2-TPR, UV–vis, and XPS. The better catalytic activity and stability of Ni-modified Ag/SiO2 (versus Ag/SiO2) are ascribed to the improved dispersion of active Ag species as well as the higher resistance to the growth of Ag particles due to the presence of Ni species.

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Partial hydrogenation of dimethyl oxalate on Cu/SiO2 catalyst modified by sodium silicate

Cited by 31 publications

References 34 publications

High-Performance Ni₃P/meso-SiO₂ for Gas-Phase Hydrogenation of Dimethyl Oxalate to Methyl Glycolate

High-Performance Ni₃P/meso-SiO₂ for Gas-Phase Hydrogenation of Dimethyl Oxalate to Methyl Glycolate

Copper Phyllosilicates-Derived Catalysts in the Production of Alcohols from Hydrogenation of Carboxylates, Carboxylic Acids, Carbonates, Formyls, and CO2: A Review

Ni-Modified Ag/SiO2 Catalysts for Selective Hydrogenation of Dimethyl Oxalate to Methyl Glycolate

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Partial hydrogenation of dimethyl oxalate on Cu/SiO2 catalyst modified by sodium silicate

Cited by 31 publications

References 34 publications

High-Performance Ni3P/meso-SiO2 for Gas-Phase Hydrogenation of Dimethyl Oxalate to Methyl Glycolate

High-Performance Ni3P/meso-SiO2 for Gas-Phase Hydrogenation of Dimethyl Oxalate to Methyl Glycolate

Copper Phyllosilicates-Derived Catalysts in the Production of Alcohols from Hydrogenation of Carboxylates, Carboxylic Acids, Carbonates, Formyls, and CO2: A Review

Ni-Modified Ag/SiO2 Catalysts for Selective Hydrogenation of Dimethyl Oxalate to Methyl Glycolate

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High-Performance Ni₃P/meso-SiO₂ for Gas-Phase Hydrogenation of Dimethyl Oxalate to Methyl Glycolate

High-Performance Ni₃P/meso-SiO₂ for Gas-Phase Hydrogenation of Dimethyl Oxalate to Methyl Glycolate