Effect of the carburization of MoO3-based catalysts on the activity for butane hydroisomerization

Alexandre Goguet, Sergiy Shekhtman, F. Cavallaro, Christopher Hardacre, Frederic Meunier

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Catalysts based on molybdena (MoO3) reduced at mild temperatures are highly active and selective for the hydroisomerization of alkanes: however, further catalyst development has been hampered by the structural complexity of the material and the controversy regarding the nature of the active phase. The present work is aimed at determining the relationship between the content of carbon present in an oxycarbide phase and the activity for n-butane hydroisomerization. A series of temperature-programmed oxidation (TPO) and temporal analysis of product (TAP) data showed that the oxycarbidic carbon content is not related to the activity of the sample for the isomerization of n-butane to isobutane. The formation of a carbon-containing phase is, therefore, not crucial to obtain an active catalyst. This study also highlights the capability of the multi-pulse TAP technique to investigate structure-activity relationships over materials with readily variable atomic composition. (C) 2008 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)30-35
Number of pages6
JournalAPPLIED CATALYSIS A-GENERAL
Volume344 (1-2)
Issue number1-2
DOIs
Publication statusPublished - 15 Jul 2008

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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