Molybdenum Oxide Supported on Ti 3 AlC 2 is an Active Reverse Water-Gas Shift Catalyst

MAX phases are layered ternary carbides or nitrides that are attractive for catalysis applications due to their unusual set of properties. They show high thermal stability like ceramics, but they are also tough, ductile, and good conductors of heat and electricity like metals. Here, we study the pot...

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Vydané v:	ACS sustainable chemistry & engineering Ročník 9; číslo 14; s. 4957
Hlavní autori:	Ronda-Lloret, Maria, Yang, Liuqingqing, Hammerton, Michelle, Marakatti, Vijaykumar S, Tromp, Moniek, Sofer, Zdeněk, Sepúlveda-Escribano, Antonio, Ramos-Fernandez, Enrique V, Delgado, Juan Jose, Rothenberg, Gadi, Ramirez Reina, Tomas, Shiju, N Raveendran
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	United States 12.04.2021
ISSN:	2168-0485, 2168-0485
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Popis
Shrnutí:	MAX phases are layered ternary carbides or nitrides that are attractive for catalysis applications due to their unusual set of properties. They show high thermal stability like ceramics, but they are also tough, ductile, and good conductors of heat and electricity like metals. Here, we study the potential of the Ti AlC MAX phase as a support for molybdenum oxide for the reverse water-gas shift (RWGS) reaction, comparing this new catalyst to more traditional materials. The catalyst showed higher turnover frequency values than MoO /TiO and MoO /Al O catalysts, due to the outstanding electronic properties of the Ti AlC support. We observed a charge transfer effect from the electronically rich Ti AlC MAX phase to the catalyst surface, which in turn enhances the reducibility of MoO species during reaction. The redox properties of the MoO /Ti AlC catalyst improve its RWGS intrinsic activity compared to TiO - and Al O -based catalysts.
ISSN:	2168-0485 2168-0485
DOI:	10.1021/acssuschemeng.0c07881