Back to Search Start Over

Promotion of lanthanum-supported cobalt-based catalysts for the Fischer–Tropsch reaction.

Authors :
Brabant, Cathy
Khodakov, Andrei
Griboval-Constant, Anne
Source :
Comptes Rendus Chimie. Jan2017, Vol. 20 Issue 1, p40-46. 7p.
Publication Year :
2017

Abstract

This paper focuses on the effect of the La/Co ratio on the structure of alumina cobalt supported catalysts for Fischer–Tropsch synthesis. Catalysts are prepared by wetness impregnation of alumina followed by calcination in air. The catalysts contain 10 wt% of cobalt and between 0 and 20 wt% of La (0, 5, 10, 15, 20). The catalysts were activated by reduction in hydrogen at 673 K and the catalytic performance was evaluated in a fixed bed reactor at 20 bar and 493 K. A wide range of techniques (BET, XRD, TPR, and XPS) were used for catalyst characterization at each preparation step and showed strong impact of the La/Co ratio on the structure, reducibility of supported cobalt phases. It was shown that 10 wt% of lanthanum allows reducing cobalt aluminate and improving catalytic performances. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
16310748
Volume :
20
Issue :
1
Database :
Academic Search Index
Journal :
Comptes Rendus Chimie
Publication Type :
Academic Journal
Accession number :
120673087
Full Text :
https://doi.org/10.1016/j.crci.2016.02.006