CuCo alloy nanonets derived from CuCo2O4 spinel oxides for higher alcohols synthesis from syngas.

Impact Factor:

6.119

DOI number:

10.1039/d1cy01179k

Journal:

Catal. Sci. Technol.

Key Words:

Binary alloys Copper alloys Phase separation Surface defects Calcination method Catalytic performance Catalytic results Cu-co alloys Higher alcohols synthesis Hydrothermal-calcination Nano-net Spinel oxide Syn gas Topological transformation Synthesis gas

Abstract:

Porous CuCo alloy nanonets were fabricated via structural topological transformation of CuCo2O4 spinel precursors prepared by a facile hydrothermal-calcination method. Their structural properties together with catalytic performance for higher alcohol synthesis (HAS) from syngas were systematically investigated. Characterization results demonstrated that Cu and Co atoms were uniformly distributed in the alloy nanonets without phase separation. Furthermore, the CuCo homogenized alloy nanonets were rich in surface defects, such as grains, steps and pores. The catalytic results of HAS showed that the CuCo alloy nanonets presented a high CO conversion of 66.5%, a C2+OH selectivity in total alcohols of 92.3 wt% and a space time yield (STY) of 228.2 g kgcat-1 h-1 for C2+OH. Compared with CuCo nanoparticle counterparts made by a conventional impregnation method, the CuCo alloy nanonets showed superior catalytic performance toward HAS. This work provides a novel strategy for the rational design of bimetallic alloy catalysts.

Co-author:

Ruyang Wang, Wenjie Li, Jingyan Wang, Hongliang Li, Yisheng Tan, Jun Bao Li, W. J. Wang, J. Y. Li, H. L. Tan, Y. S.

First Author:

Chao Huang, Peiyu Ma

Correspondence Author:

Lei Luo, Xu Li

Document Type:

SCI

Volume:

11

Issue:

23

Page Number:

7617-7623

Translation or Not:

no

Date of Publication:

2021-10-09

Links to published journals:

https://pubs.rsc.org/en/content/articlelanding/2021/CY/D1CY01179K