Steam Reforming Reactions of Methanol Over Nickel and Copper Catalysts

Tien‐Bau ‐B Su*, Min‐Hon ‐H Rei

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

14 Scopus citations

Abstract

Steam‐reforming reactions of methanol over NiO/Al2O3 and CuO/ZnO have been investigated. Over the nickel catalyst, the reaction rate is of zero kinetic order with respect to either methanol or steam, and the activation energy is 12.4 kJmol−1, whereas with copper catalyst, the rate is expressed according to the literature as kPa/(1 + KaPa + Kb+Pb) in which “a” and “b” are methanol and steam, respectively. The rate‐controlling step of the reaction is assigned to the dissociation of O‐H bond with dehydrogenation of C‐H bond proceed rapidly to form carbon oxides. With copper catalyst the intrinsic participation of a water molecule during the dehydrogenation of C‐H bond leads to the formation of carbon dioxide. With nickel catalyst, the dehydrogenation proceed more rapidly than the migration of a water molecule from an alumina site to a nickel site and causes almost exclusively the formation of carbon monoxide and hydrogen at a lower reaction temperature.

Original languageEnglish
Pages (from-to)535-541
Number of pages7
JournalJournal of the Chinese Chemical Society
Volume38
Issue number6
DOIs
StatePublished - 12 1991
Externally publishedYes

Keywords

  • CuO/ZnO
  • Methanol
  • NiO/Al0
  • Steam reforming

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