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Selective Hydrogenation of Crotonaldehyde Over Cobalt Based Self-Supported Catalysts

Published online by Cambridge University Press:  15 February 2011

A. N. Patil ,
M. A. Bañares ,
X. Lei ,
T. P. Fehlner  and
E. E. Wolf
A. N. Patil
Affiliation:
Department of Chemical Engineering, University of Notre Dame, Notre Dame, Indiana-46556, U. S. A.
M. A. Bañares
Affiliation:
Department of Chemical Engineering, University of Notre Dame, Notre Dame, Indiana-46556, U. S. A.
X. Lei
Affiliation:
Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana-46556, U. S. A.
T. P. Fehlner
Affiliation:
Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana-46556, U. S. A.
E. E. Wolf
Affiliation:
Department of Chemical Engineering, University of Notre Dame, Notre Dame, Indiana-46556, U. S. A.
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Abstract

Complex cobalt-carbonyl ligand based clusters of clusters are used as molecular precursors for self-supported model catalysts. These precursors consist of two metal layers: an outer of the complex Co-carbonyl ligands, and a core of metal (e.g. Co or Zn) carboxylate groups. Partial thermolysis at low temperature (LT) of these materials under hydrogen results in almost completely decarbonylated material with a mainly unchanged carboxylate metal core. Complete pyrolysis at higher temperatures (HT) in hydrogen leads to mixed metal environment. These materials were used as a heterogenous catalyst in the gas phase hydrogenation of crotonaldehyde. The maximum yield of 27 % of desired product crotyl alcohol was observed when HT-CoCo was used as the catalyst at 423 K. The catalyst activity and the crotyl alcohol selectivity remained unchanged over 2 days of operation. The bimetallic ZnCo catalysts showed lower selectivity to crotyl alcohol than the CoCo catalysts.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 368: Symposium T – Synthesis and Properties of Advanced Catalytic Materials , 1994 , 209
Copyright
Copyright © Materials Research Society 1995

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References

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