Cu-fiber-structured La2O3–PdAu(alloy)–Cu nanocomposite catalyst for gas-phase dimethyl oxalate hydrogenation to ethylene glycol

2016 ◽  
Vol 6 (19) ◽  
pp. 7024-7028 ◽  
Author(s):  
Lupeng Han ◽  
Guofeng Zhao ◽  
Yanfei Chen ◽  
Jian Zhu ◽  
Pengjing Chen ◽  
...  
Keyword(s):  
Low Temperature ◽  
Ethylene Glycol ◽  
Gas Phase ◽  
Dimethyl Oxalate ◽  
Nanocomposite Catalyst

A Cu-fiber-structured La2O3–PdAu(alloy)–Cu nanocomposite catalyst is low-temperature active, selective and stable for gas-phase dimethyl oxalate hydrogenation to ethylene glycol.

Structured Pd–Au/Cu-fiber catalyst for gas-phase hydrogenolysis of dimethyl oxalate to ethylene glycol

2015 ◽  
Vol 51 (52) ◽  
pp. 10547-10550 ◽  
Author(s):  
Li Zhang ◽  
Lupeng Han ◽  
Guofeng Zhao ◽  
Ruijuan Chai ◽  
Qiaofei Zhang ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Gas Phase ◽  
Dimethyl Oxalate

A structured Pd–Au/Cu-fiber with a ternary Pd–Au–Cu+ complex is active, selective and stable for the gas-phase hydrogenolysis of dimethyl oxalate to ethylene glycol.

A Ni-foam-structured MoNi4–MoOx nanocomposite catalyst for hydrogenation of dimethyl oxalate to ethanol

2020 ◽  
Vol 56 (5) ◽  
pp. 806-809 ◽  
Author(s):  
Jian Zhu ◽  
Weidong Sun ◽  
Song Wang ◽  
Guofeng Zhao ◽  
Ye Liu ◽  
...  
Keyword(s):  
Gas Phase ◽  
Ni Foam ◽  
Dimethyl Oxalate ◽  
Highly Active ◽  
Nanocomposite Catalyst

A Ni-foam structured MoNi4–MoOx nanocomposite catalyst is highly active, selective and stable for the gas-phase hydrogenation of dimethyl oxalate to ethanol.

scholarly journals 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

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3236
Author(s):  
Deliang Yang ◽  
Runping Ye ◽  
Ling Lin ◽  
Rong Guo ◽  
Peiyu Zhao ◽  
...  
Keyword(s):  
Low Temperature ◽  
Ethylene Glycol ◽  
Structural Characteristics ◽  
Sol Gel ◽  
Metallic Copper ◽  
Sample Surface ◽  
Catalytic Performance ◽  
Acid Sites ◽  
Dimethyl Oxalate ◽  
Metal Support Interaction

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.

Low-temperature hydrogenation of dimethyl oxalate to ethylene glycol via ternary synergistic catalysis of Cu and acid−base sites

2019 ◽  
Vol 248 ◽  
pp. 394-404 ◽  
Author(s):  
Guoqing Cui ◽  
Xiaoyu Meng ◽  
Xi Zhang ◽  
Wenlong Wang ◽  
Sailong Xu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Ethylene Glycol ◽  
Acid Base ◽  
Dimethyl Oxalate ◽  
Synergistic Catalysis

Preferential synthesis of ethanol from syngas via dimethyl oxalate hydrogenation over an integrated catalyst

2019 ◽  
Vol 55 (39) ◽  
pp. 5555-5558 ◽  
Author(s):  
Xin Shang ◽  
Huijiang Huang ◽  
Qiao Han ◽  
Yan Xu ◽  
Yujun Zhao ◽  
...  
Keyword(s):  
Gas Phase ◽  
High Selectivity ◽  
Dimethyl Oxalate ◽  
Preferential Synthesis

A novel, simple and efficient integrated catalyst exhibits an extremely high selectivity of 98% to ethanol in gas-phase hydrogenation of dimethyl oxalate.

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