Issue 46, 2019

The role of intermediate CoxMn1−xO (x = 0.6–0.85) nanocrystals in the formation of active species for the direct production of lower olefins from syngas

Abstract

Cobalt–manganese (CoMn) oxides obtained through a one-pot synthesis can be controllably reduced to CoxMn1−xO nanocrystals for the direct production of C2–C4 olefins with high selectivity (50.9 mol%) from syngas at high CO conversion (92.4%), higher than predicted by the Anderson–Schulz–Flory distribution. The formed CoxMn1−xO is the key to generating an active Co2C quadrangular nanoprism phase with (101) and (020) exposed facets in-situ during the reaction, which plays a pivotal role in the high lower-olefin yield. No deactivation was observed after 100 hours under harsh high-conversion reaction conditions, and the activity is one order of magnitude higher than that of the traditional cobalt catalyst.

Graphical abstract: The role of intermediate CoxMn1−xO (x = 0.6–0.85) nanocrystals in the formation of active species for the direct production of lower olefins from syngas

Supplementary files

Article information

Article type
Communication
Submitted
24 Feb 2019
Accepted
09 May 2019
First published
09 May 2019

Chem. Commun., 2019,55, 6595-6598

The role of intermediate CoxMn1−xO (x = 0.6–0.85) nanocrystals in the formation of active species for the direct production of lower olefins from syngas

S. Liu, B. Sun, Y. Zhang, J. Li, D. E. Resasco, L. Nie and L. Wang, Chem. Commun., 2019, 55, 6595 DOI: 10.1039/C9CC01560D

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