The University of Southampton
University of Southampton Institutional Repository

The effect of lanthanum addition on the catalytic activity of γ-alumina supported bimetallic Co–Mo carbides for dry methane reforming

The effect of lanthanum addition on the catalytic activity of γ-alumina supported bimetallic Co–Mo carbides for dry methane reforming
The effect of lanthanum addition on the catalytic activity of γ-alumina supported bimetallic Co–Mo carbides for dry methane reforming
The effect of lanthanum addition to γ-alumina supported bimetallic carbides has been studied for the reaction of dry methane reforming using four different lanthanum loading levels of 1, 5, 10 and 15 wt% of lanthanum. It has been demonstrated that the addition of lanthanum to supported bimetallic carbides at low loading levels (1 wt%) results in smaller carbide crystallite sizes compared to catalysts containing either no lanthanum or higher lanthanum loading levels (5–15 wt%). Increased lanthanum loading results in increased carbon dioxide desorption at 500–700 °C. Reactions indicated that increased lanthanum loading resulted in significantly reduced product yields due to increased reverse water–gas shift activity. All materials exhibited degrees of sintering during the reaction. It was found that cobalt reacted with lanthanum species to form a LaCoO3 phase. The 1 wt% catalyst possessed superior catalytic properties for dry methane reforming and was tested for 100 h. After an initial loss of activity, the catalyst appeared to stabilise, however, a decrease of ~3 % in the H2:CO ratio, evidence of carbide crystallite growth and carbon deposition, indicated that a shift in the side reactions had occurred during the reaction.
2190-5525
145-156
France, Liam J
937d0ea5-0b48-4e96-8a72-85d64751a934
Du, Xian
d2b18f3e-f36c-42e4-b42d-33a1ed22b5b5
Almuqati, Naif
130fb325-3507-4ece-8945-3e689389f27e
Kuznetsov, Vladimir L.
274631c4-ec2c-4b0f-ac24-15948d5d8fe8
Zhao, Yongxiang
ad91486b-c15f-4cd0-a380-0ba4f8c8d546
Jiang, Zheng
bcf19e78-f5c3-48e6-802b-fe77bd12deab
Xiao, Tiancun
90161b4f-4483-4b4f-8db6-6614b001ac54
Bagabas, Abdulaziz
3360c6f2-b335-4848-afa7-ff60f0422199
Almegren, Hamid
381ca6b7-98d6-4621-966c-c67b3e094f8a
Edwards, Peter P.
1c8ab595-549c-4dca-b911-a46a94183e2b
France, Liam J
937d0ea5-0b48-4e96-8a72-85d64751a934
Du, Xian
d2b18f3e-f36c-42e4-b42d-33a1ed22b5b5
Almuqati, Naif
130fb325-3507-4ece-8945-3e689389f27e
Kuznetsov, Vladimir L.
274631c4-ec2c-4b0f-ac24-15948d5d8fe8
Zhao, Yongxiang
ad91486b-c15f-4cd0-a380-0ba4f8c8d546
Jiang, Zheng
bcf19e78-f5c3-48e6-802b-fe77bd12deab
Xiao, Tiancun
90161b4f-4483-4b4f-8db6-6614b001ac54
Bagabas, Abdulaziz
3360c6f2-b335-4848-afa7-ff60f0422199
Almegren, Hamid
381ca6b7-98d6-4621-966c-c67b3e094f8a
Edwards, Peter P.
1c8ab595-549c-4dca-b911-a46a94183e2b

France, Liam J, Du, Xian, Almuqati, Naif, Kuznetsov, Vladimir L., Zhao, Yongxiang, Jiang, Zheng, Xiao, Tiancun, Bagabas, Abdulaziz, Almegren, Hamid and Edwards, Peter P. (2014) The effect of lanthanum addition on the catalytic activity of γ-alumina supported bimetallic Co–Mo carbides for dry methane reforming. Applied Petrochemical Research, 4 (1), 145-156. (doi:10.1007/s13203-014-0058-x).

Record type: Article

Abstract

The effect of lanthanum addition to γ-alumina supported bimetallic carbides has been studied for the reaction of dry methane reforming using four different lanthanum loading levels of 1, 5, 10 and 15 wt% of lanthanum. It has been demonstrated that the addition of lanthanum to supported bimetallic carbides at low loading levels (1 wt%) results in smaller carbide crystallite sizes compared to catalysts containing either no lanthanum or higher lanthanum loading levels (5–15 wt%). Increased lanthanum loading results in increased carbon dioxide desorption at 500–700 °C. Reactions indicated that increased lanthanum loading resulted in significantly reduced product yields due to increased reverse water–gas shift activity. All materials exhibited degrees of sintering during the reaction. It was found that cobalt reacted with lanthanum species to form a LaCoO3 phase. The 1 wt% catalyst possessed superior catalytic properties for dry methane reforming and was tested for 100 h. After an initial loss of activity, the catalyst appeared to stabilise, however, a decrease of ~3 % in the H2:CO ratio, evidence of carbide crystallite growth and carbon deposition, indicated that a shift in the side reactions had occurred during the reaction.

Text
The effect of lanthanum addition on the catalytic activity of γ-alumina supported bimetallic Co–Mo carbides for dry methane reforming.pdf - Version of Record
Available under License Creative Commons Attribution.
Download (1MB)

More information

e-pub ahead of print date: 27 April 2014
Published date: May 2014
Organisations: Faculty of Engineering and the Environment

Identifiers

Local EPrints ID: 364665
URI: http://eprints.soton.ac.uk/id/eprint/364665
ISSN: 2190-5525
PURE UUID: 1030466f-7490-4e41-8b24-593271ff0c3c
ORCID for Zheng Jiang: ORCID iD orcid.org/0000-0002-7972-6175

Catalogue record

Date deposited: 07 May 2014 14:27
Last modified: 10 Jul 2020 00:33

Export record

Altmetrics

Contributors

Author: Liam J France
Author: Xian Du
Author: Naif Almuqati
Author: Vladimir L. Kuznetsov
Author: Yongxiang Zhao
Author: Zheng Jiang ORCID iD
Author: Tiancun Xiao
Author: Abdulaziz Bagabas
Author: Hamid Almegren
Author: Peter P. Edwards

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×