Hydrogenation of dimethyl malonate to 1,3-propanediol catalyzed by a Cu/SiO2catalyst: the reaction network and the effect of Cu+/Cu0on selectivity

Zheng, Sainan; Zhu, Kake; Li, Wei; Ji, Yang

doi:10.1039/c6nj03960j

Cited by 17 publications

(16 citation statements)

References 64 publications

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“…The Cu 0 and Cu + species on the catalyst surface play different roles in catalytic reactions, such as activation of H 2 or adsorption of substrate. There are two steps of reaction in HMF hydrogenolysis to DMF, namely the hydrogenation of the side -CH = O groups and the following hydrogenolysis of -CH 2 -OH groups, which both need the activation of H 2 and adsorption of HMF ( Zheng et al, 2017 ). Therefore, XPS and XAES analyses were performed to evaluate the chemical state of Cu species on SiO 2 surface.…”

Section: Resultsmentioning

confidence: 99%

Tailoring the catalytic performance of Cu/SiO2 for hydrogenolysis of biomass-derived 5-hydroxymethylfurfural to renewable fuels

Jia

Lv²,

Xia³

et al. 2022

Front. Chem.

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Efficient conversion of biomass-derived 5-hydroxymethylfurfural (HMF) to renewable fuels such as 2,5-dimethylfuran (DMF) and 2,5-dimethyltetrahydrofuran (DMTHF) is of significance for sustainable energy supply. For efficient catalyst design, it is important to understand the catalytic behavior and clarify the influence of physico-chemical properties of catalyst on reaction performance. Herein, to study the structure-activity relationships of monometallic Cu catalysts for HMF hydrogenolysis, a series of Cu/SiO2 catalysts with different physico-chemical properties were prepared and compared for their catalytic performance in HMF hydrogenolysis. It was found that Cu/SiO2-HT-8.5 catalyst prepared by hydrothermal method showed excellent activity in HMF hydrohydrolysis reaction. Under the optimal reaction condition, the total yield of liquid fuels reaches 91.6% with 57.1% yield of DMF and 34.5% yield of DMTHF in THF solvent. Characterizations such as XRD, H2-TPR, N2-adsorption/desorption, TEM and XPS revealed that the Cu particles in the Cu/SiO2-HT-8.5 catalyst have uniform size and high dispersion. The Cu species and the SiO2 support have relatively weak interaction and are easy to be reduced to Cu0, which makes it show excellent activity in the hydrogenolysis of HMF.

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Section: Resultsmentioning

confidence: 99%

Tailoring the catalytic performance of Cu/SiO2 for hydrogenolysis of biomass-derived 5-hydroxymethylfurfural to renewable fuels

Jia

Lv²,

Xia³

et al. 2022

Front. Chem.

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“…Lomate et al also reported that Cu supported SiO 2 appears to be a complex function of acidity, which is the nature of copper species in the Cu/SiO 2 catalysts for LA hydrogenolysis. Zheng et al and Zhu et al performed hydrogenolysis reaction catalyzed by a copper‐supported material, correlation of surface‐active Cu species, and particle size versus activity. As demonstrated by Schittkowski et al, their bifunctional nature of Cu/ZrO 2 catalyst is applied in the hydrogenation of ethyl acetate.…”

Section: Resultsmentioning

confidence: 99%

Efficient Vapor‐Phase Selective Hydrogenolysis of Bio‐Levulinic Acid to γ‐Valerolactone Using Cu Supported on Hydrotalcite Catalysts

et al. 2018

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In this work, Cu nanoparticles (Cu NPs, 2‐20 nm) supported on Hydrotalcite catalysts exhibit enhanced selectivity for γ‐valerolactone (GVL) during hydrogenolysis of levulinic acid (LA). At 260 °C, over 3 wt% Cu achieved 87.5% of LA conversion with a maximum GVL selectivity (95%). In contrast, LA hydrogenolysis over 3Cu/Hydrotalcite catalyst is highly active and stable toward the production of GVL due to balanced acido‐basicity and higher Cu dispersion with ultrasmall particle sizes, which are investigated through the temperature programmed desorption (TPD) of ammonia, N2O titration, and transmission electron microscopy (TEM) analysis. Hydrotalcite in combination with inexpensive Cu catalyst is found to be an efficient and environmentally benign for LA hydrogenolysis.

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“…One centered at 917.5 eV that is ascribed to Cu 0 , and a second one at lower kinetic energy that ascribed to Cu + . [26,[48][49][50] It points out that even for low Cu content, some of the copper is reduced. However, for the samples having high Cu content only one peak centered at 917.5 eV is detected.…”

Section: Characterization Of the First Generation Of Catalystsmentioning

confidence: 99%

CuOx/CeO2 catalyst derived from metal organic framework for reverse water-gas shift reaction

Ronda‐Lloret

Rico-Francés

Sepúlveda-Escribano

et al. 2018

Applied Catalysis A: General

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Highlights  An alternative route using a MOF as catalyst precursor has been studied  The MOF called Cu-BTC has been used as precursor  The MOF was impregnated with cerium precursor  The impregnated MOF was pyrolyzed to obtain the catalyst  With the pyrolysis method we could control the final properties of the catalysts ABSTRACT: Herein, we have studied an alternative route for preparing CuOx/CeO2 catalysts using metal organic frameworks (MOFs) as precursors. Usually, CuOx/CeO2 materials are prepared by wet impregnation of ceria support. In this study, we have impregnated a Cu-MOF with a ceria precursor and then pyrolized the impregnated MOF using different conditions and procedures. The prepared catalysts have been characterized by using a wide range of techniques such as XRD, XPS, Raman, and TPR. We have found that the pyrolysis method determines the dispersion of the oxidized copper species on the ceria surface what, in turn, controls the catalytic activity and selectivity of the catalysts in the reverse water-gas shift (RWGS) reaction. We have compared the behavior of the MOF-derived

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Hydrogenation of dimethyl malonate to 1,3-propanediol catalyzed by a Cu/SiO₂catalyst: the reaction network and the effect of Cu⁺/Cu⁰on selectivity

Abstract: 1,3-Propanediol was synthesized via the hydrogenation of dimethyl malonate over a Cu/SiO2 catalyst. The reaction network and active sites were revealed for the first time.

Cited by 17 publications

References 64 publications

Tailoring the catalytic performance of Cu/SiO2 for hydrogenolysis of biomass-derived 5-hydroxymethylfurfural to renewable fuels

Tailoring the catalytic performance of Cu/SiO2 for hydrogenolysis of biomass-derived 5-hydroxymethylfurfural to renewable fuels

Efficient Vapor‐Phase Selective Hydrogenolysis of Bio‐Levulinic Acid to γ‐Valerolactone Using Cu Supported on Hydrotalcite Catalysts

CuOx/CeO2 catalyst derived from metal organic framework for reverse water-gas shift reaction

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