Efficient hydrogenation of dimethyl oxalate to methyl glycolate over highly active immobilized-ruthenium catalyst

Fan, Hanhan; Tan, Jingjing; Zhu, Yulei; Zheng, Hongyan; Li, Yongwang

doi:10.1016/j.molcata.2016.09.033

Cited by 21 publications

(19 citation statements)

References 23 publications

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“…The peaks at 484, 523 and 622 cm À1 are assigned to the E g , F 2g (2) and F 2g (1) symmetry, respectively. The Raman peak at 196 cm À1 is attributed to the F 2g (3) mode of tetrahedral sites (CoO 4 ) while the peak at 691 cm À1…”

Section: Resultsmentioning

confidence: 99%

“…In addition, they are applied in the synthesis of macromolecule polymer material as platform molecules. [1][2][3] To date, many strategies have been developed to prepare MG from the different conventional substrates. 4,5 Moreover, since the heterogeneous Au catalysts were rst reported to be active in the oxidation of ethylene glycol to methyl glycolate by Hayashi et al, 6 a series of studies have shown that Au catalysts supported on various supports are effective in the oxidation of various alcohols.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of Au/Co₃O₄nanocomposites in glycol oxidation by tailoring Co₃O₄morphology

et al. 2021

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of Au/Co₃O₄nanocomposites in glycol oxidation by tailoring Co₃O₄morphology

et al. 2021

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“…Ethylene glycol (EG) and ethanol (EtOH) are both versatile chemical raw materials and intermediates, which can be used for the synthesis of plentiful fine chemicals and applying in all walks of life [1][2][3]. The traditional preparation routes are derived from petroleum or biological routes.…”

Section: Introductionmentioning

confidence: 99%

“…The traditional preparation routes are derived from petroleum or biological routes. However, with the shrinkage of the crude oil resources and increasing environmental pollution, the coal chemical route based on C1 chemical technology has become a research hotspot in recent years [1][2][3]. Among them, the hydrogenation of DMO (dimethyl oxalate) is increasing important because its ability which can build a bridge between syngas and methyl glycolate (MG), EG and EtOH, etc.…”

Section: Introductionmentioning

confidence: 99%

Boron Modified Bifunctional Cu/SiO2 Catalysts with Enhanced Metal Dispersion and Surface Acid Sites for Selective Hydrogenation of Dimethyl Oxalate to Ethylene Glycol and Ethanol

Yang

Lin

et al. 2021

Nanomaterials

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Boron (B) promoter modified Cu/SiO2 bifunctional catalysts were synthesized by sol-gel method and used to produce ethylene glycol (EG) and ethanol (EtOH) through efficient hydrogenation of dimethyl oxalate (DMO). Experimental results showed that boron promoter could significantly improve the catalytic performance by improving the structural characteristics of the Cu/SiO2 catalysts. The optimized 2B-Cu/SiO2 catalyst exhibited excellent low temperature catalytic activity and long-term stability, maintaining the average EG selectivity (Sel.EG) of 95% at 190 °C, and maintaining the average EtOH selectivity (Sel.EtOH) of 88% at 260 °C, with no decrease even after reaction of 150 h, respectively. Characterization results revealed that doping with boron promoter could significantly increase the copper dispersion, enhance the metal-support interaction, maintain suitable Cu+/(Cu+ + Cu0) ratio, and diminish metallic copper particles during the hydrogenation of DMO. Thus, this work introduced a bifunctional boron promoter, which could not only improve the copper dispersion, reduce the formation of bulk copper oxide, but also properly enhance the acidity of the sample surface, so that the Cu/SiO2 sample could exhibit superior EG selectivity at low temperature, as well as improving the EtOH selectivity at high temperature.

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“…At high reaction temperature, DMO and MG are easy to polymerize to form macromolecules due to their thermosensitivity. 1,19 Therefore, it is necessary to develop a high-efficiency catalyst for DMO to MG at low temperatures. Some noble metals such as Rh, 26,27 Pd, 28 Ru [29][30][31][32][33][34] are usually used for the hydrogenation of carbonyl groups, among which Ru catalyst shows excellent performance on low-temperature hydrogenation.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of methyl glycolate via low‐temperature hydrogenation of dimethyl oxalate over an efficient and stable Ru/activated carbon catalyst

Zheng

Xue

Niu

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND: Syngas to dimethyl oxalate (DMO) followed by hydrogenation to methyl glycolate (MG) is considered to be an environmentally friendly and economical route. However, the catalyst with super performance and low cost for this route is still challenging. In this work, a simple and low-lost fabrication method was developed to prepare a Ru/activated carbon (AC) catalyst and was used for DMO hydrogenation to MG under mild reaction conditions. RESULTS: The Ru/AC catalyst showed the best performance in the low-temperature hydrogenation of DMO to MG compared to Ru/SiO 2 and Ru/Al 2 O 3 . A series of characterization results showed that the super catalytic properties of Ru/AC catalyst might be attributed to the higher dispersion of Ru on support and its smallest nanoparticles size, weak surface acidity and electrondeficient state of Ru species. The key parameters such as Ru loading, temperature, weight hourly space velocity, and pressure, were comprehensively investigated. MG selectivity of 94.6% with DMO conversion of 97.2% were obtained over the 4.0 Ru/AC catalyst at 90 °C. The 4.0Ru/AC catalyst showed excellent stability and there was no obvious deactivation after 1032 h test.CONCLUSIONS: The Ru/AC catalyst is effective for the DMO hydrogenation to MG under mild conditions and has great promise for industrial applications because of its low cost, simple preparation, high efficiency, and long life.

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Efficient hydrogenation of dimethyl oxalate to methyl glycolate over highly active immobilized-ruthenium catalyst

Cited by 21 publications

References 23 publications

Investigation of Au/Co₃O₄nanocomposites in glycol oxidation by tailoring Co₃O₄morphology

Investigation of Au/Co₃O₄nanocomposites in glycol oxidation by tailoring Co₃O₄morphology

Boron Modified Bifunctional Cu/SiO2 Catalysts with Enhanced Metal Dispersion and Surface Acid Sites for Selective Hydrogenation of Dimethyl Oxalate to Ethylene Glycol and Ethanol

Synthesis of methyl glycolate via low‐temperature hydrogenation of dimethyl oxalate over an efficient and stable Ru/activated carbon catalyst

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Efficient hydrogenation of dimethyl oxalate to methyl glycolate over highly active immobilized-ruthenium catalyst

Cited by 21 publications

References 23 publications

Investigation of Au/Co3O4nanocomposites in glycol oxidation by tailoring Co3O4morphology

Investigation of Au/Co3O4nanocomposites in glycol oxidation by tailoring Co3O4morphology

Boron Modified Bifunctional Cu/SiO2 Catalysts with Enhanced Metal Dispersion and Surface Acid Sites for Selective Hydrogenation of Dimethyl Oxalate to Ethylene Glycol and Ethanol

Synthesis of methyl glycolate via low‐temperature hydrogenation of dimethyl oxalate over an efficient and stable Ru/activated carbon catalyst

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Investigation of Au/Co₃O₄nanocomposites in glycol oxidation by tailoring Co₃O₄morphology

Investigation of Au/Co₃O₄nanocomposites in glycol oxidation by tailoring Co₃O₄morphology