Pt-Implanted Intermetallides as the Catalysts for CH4–CO2 Reforming Full article
Conference |
9th Natural Gas Conversion Symposium 30 May - 3 Jun 2010 , Lyon |
||||||
---|---|---|---|---|---|---|---|
Journal |
Catalysis Today
ISSN: 0920-5861 , E-ISSN: 1873-4308 |
||||||
Output data | Year: 2011, Volume: 171, Number: 1, Pages: 156-167 Pages count : 12 DOI: 10.1016/j.cattod.2011.03.014 | ||||||
Tags | CH4-CO2 reforming, Intermetallides, Ion implantation, Self-propagating high-temperature synthesis, Synthesis gas | ||||||
Authors |
|
||||||
Affiliations |
|
Funding (1)
1 | Siberian Branch of the Russian Academy of Sciences |
Abstract:
A new type of catalytic system on the base of Ni3Al intermetallic compound was proposed for CO2 reforming of methane. Several catalysts were prepared by self-propagating high temperature synthesis and characterized by XRD (in situ and ex situ), DTA-TG, SEM + EDS, HRTEM + EDS and XPS. Ion implantation was used as a method of catalyst surface modification. Activity testing has been performed in the fixed bed reactor at the temperatures of 600–900 °C under atmospheric pressure and the reactant molar ratio of 1. The structure and morphology of different types of carbon deposits obtained on the surface of unmodified Ni3Al were investigated. The results indicated that the addition of a low amount (less than 0.1 wt%) of Pt to the Ni3Al intermetallide leads to a decrease in carbon deposition and Pt-implanted catalysts were stable for a long period of time. The evidence suggests that the differences in the stabilities may be due to the following reasons: (1) Pt prevents Ni phase sintering by avoiding particle coalescence, which is the main sintering process under severe CH4–CO2 reforming conditions, (2) Pt hinders deactivating carbon formation by limiting bulk nickel carbide and therefore carbon filament formation, which may lead to reactor plugging and/or particle fragmentation, and by suppressing encapsulating carbon formation which limits access of reactant to the active nickel phase.
Cite:
Arkatova L.A.
, Pakhnutov O.V.
, Shmakov A.N.
, Naiborodenko Y.S.
, Kasatsky N.G.
Pt-Implanted Intermetallides as the Catalysts for CH4–CO2 Reforming
Catalysis Today. 2011. V.171. N1. P.156-167. DOI: 10.1016/j.cattod.2011.03.014 WOS Scopus РИНЦ
Pt-Implanted Intermetallides as the Catalysts for CH4–CO2 Reforming
Catalysis Today. 2011. V.171. N1. P.156-167. DOI: 10.1016/j.cattod.2011.03.014 WOS Scopus РИНЦ
Dates:
Submitted: | Nov 6, 2010 |
Accepted: | Mar 7, 2011 |
Published online: | May 11, 2011 |
Published print: | Aug 1, 2011 |
Identifiers:
Web of science | WOS:000293276700020 |
Scopus | 2-s2.0-79961028061 |
Elibrary | 24939953 |
Chemical Abstracts | 2011:963236 |
Chemical Abstracts (print) | 155:411191 |
OpenAlex | W2013201187 |