Ambient-pressure synthesis of ethylene glycol catalyzed by C 60 -buffered Cu/SiO 2

Autor: Jianwei Zheng, Lele Huang, Cun-Hao Cui, Zuo-Chang Chen, Xu-Feng Liu, Xinping Duan, Xin-Yi Cao, Tong-Zong Yang, Hongping Zhu, Kang Shi, Peng Du, Si-Wei Ying, Chang-Feng Zhu, Yuan-Gen Yao, Guo-Cong Guo, Youzhu Yuan, Su-Yuan Xie, Lan-Sun Zheng
Rok vydání: 2022
Předmět:
Zdroj: Science. 376:288-292
ISSN: 1095-9203
0036-8075
Popis: Bulk chemicals such as ethylene glycol (EG) can be industrially synthesized from either ethylene or syngas, but the latter undergoes a bottleneck reaction and requires high hydrogen pressures. We show that fullerene (exemplified by C 60 ) can act as an electron buffer for a copper-silica catalyst (Cu/SiO 2 ). Hydrogenation of dimethyl oxalate over a C 60 -Cu/SiO 2 catalyst at ambient pressure and temperatures of 180° to 190°C had an EG yield of up to 98 ± 1%. In a kilogram-scale reaction, no deactivation of the catalyst was seen after 1000 hours. This mild route for the final step toward EG can be combined with the already-industrialized ambient reaction from syngas to the intermediate of dimethyl oxalate.
Databáze: OpenAIRE
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