Accelerating C2+ alcohols synthesis from syngas by simultaneous optimizations of CO dissociation and chain growth over CuCo alloy catalyst.

Impact Factor:

6.779

DOI number:

10.1016/j.cclet.2020.12.022

Journal:

Chin. Chem. Lett.

Key Words:

CuCo alloy Syngas C2+ alcohols CO activation Synergistic effect

Abstract:

With regard to the reaction of higher alcohol synthesis (HAS), the optimizations of activity and selectivity towards C2+ alcohol are restricted by the improper equilibrium in two different CO activation pathways and chain growth capacity. Herein, we find that delibrately controlling the compositions of catalysts is an effective strategy to achieve the equilibrium of CO activation pathways and promote the chain growth. As a result, the optimized Cu0.25Co0.75 alloy catalyst can achieve a large proportion of higher alcohol in alcohol products (C2+OH/MeOH = 4.40), together with high CO conversion of 71.27% and space-time-yield of 147.65 g kg(-1) h(-1). The mechanistic studies suggest that the good performance of Cu0.25Co0.75 catalyst is attributed to the synergistic effect between alloyed Cu and Co.

Co-author:

Chao Huang, Peiyu Ma, Wenjie Li, Qun He, Wenlong Wu, Yisheng Tan

First Author:

Meiling Shui

Correspondence Author:

Jun Bao

Document Type:

SCI

Volume:

32

Issue:

7

Page Number:

2203-2206

Translation or Not:

no

Date of Publication:

2021-12-16

Links to published journals:

https://www.sciencedirect.com/science/article/pii/S1001841720307373