Effect of cu content on Ce‐doping CuO/ZrO 2 catalysts for low‐temperature hydrogenation of dimethyl oxalate to ethanol

2021 ◽  
Author(s):  
Jian Ding ◽  
Meihui Wang ◽  
Huimin Liu ◽  
Xiaohui Guo ◽  
Gewen Yu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Dimethyl Oxalate ◽  
Cu Content

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.

scholarly journals Effect of Cu content on properties of Cu/Zn+15%SAC0307 +xCu/Al joint by ultrasonic excitation at low temperature

2021 ◽  
pp. 100073
Author(s):  
Qianzhu Xu ◽  
Guisheng Gan ◽  
Zhaoqi Jiang ◽  
Shiqi Chen ◽  
Tian Huang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Cu Content

Effective “exfoliation” of Cu/ZrO2 by varying Cu content as high performance catalysts for dimethyl oxalate hydrogenation to ethylene glycol

2019 ◽  
Vol 121 ◽  
pp. 62-67 ◽  
Author(s):  
Jian Ding ◽  
Huimin Liu ◽  
Hongyan Fan ◽  
Shengyun Chen ◽  
Yaxiong Wang ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
High Performance ◽  
Dimethyl Oxalate ◽  
Cu Content

Molybdenum carbide as an efficient catalyst for low-temperature hydrogenation of dimethyl oxalate

2016 ◽  
Vol 52 (28) ◽  
pp. 5030-5032 ◽  
Author(s):  
Yanting Liu ◽  
Jian Ding ◽  
Jiaqiang Sun ◽  
Juan Zhang ◽  
Jicheng Bi ◽  
...  
Keyword(s):  
Low Temperature ◽  
Low Temperatures ◽  
Molybdenum Carbide ◽  
Efficient Catalyst ◽  
Dimethyl Oxalate ◽  
Highly Active ◽  
Stable Catalyst ◽  
Supported Molybdenum Carbide

Silica-supported molybdenum carbide (Mo2C/SiO2) is found to be a highly active, selective and stable catalyst for the hydrogenation of dimethyl oxalate to ethanol at low temperatures (473 K).

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

Influence of La−doping on the CuO/ZrO2 catalysts with different Cu content for hydrogenation of dimethyl oxalate to ethylene glycol

2021 ◽  
Author(s):  
Jian Ding ◽  
meihui wang ◽  
huimin liu ◽  
zhenfeng wang ◽  
xiaohui guo ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Selective Hydrogenation ◽  
Dimethyl Oxalate ◽  
La Doping ◽  
Cu Content ◽  
La Addition

Herein, Cu/ZrO2 catalysts containing different Cu content with La−doping or not were used for the selective hydrogenation of dimethyl oxalate (DMO) to ethylene glycol (EG). Effects of La addition and...

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