Liquid-phase hydrogenation of citral over an immobile silica fibre catalyst

A new knitted silica fibre catalyst was introduced into liquid-phase hydrogenation of organic compounds. The fibre catalyst combines the advantages of catalyst slurries and large catalyst particles: diffusional limitations are suppressed and the catalyst is immobile. Nickel-impregnated silica fibres...

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Bibliographic Details
Published in:Applied catalysis. A, General General, 2000-03, Vol.196 (1), p.93-102
Main Authors: Salmi, Tapio, Mäki-Arvela, Päivi, Toukoniitty, Esa, Kalantar Neyestanaki, Ahmad, Tiainen, Lasse-Pekka, Lindfors, Lars-Eric, Sjöholm, Rainer, Laine, Ensio
Format: Article
Language:English
Subjects:
Catalysis
Catalytic reactions
Chemistry
Citral hydrogenation
Exact sciences and technology
General and physical chemistry
Liquid phase
Nickel
Silica fibre catalyst
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:A new knitted silica fibre catalyst was introduced into liquid-phase hydrogenation of organic compounds. The fibre catalyst combines the advantages of catalyst slurries and large catalyst particles: diffusional limitations are suppressed and the catalyst is immobile. Nickel-impregnated silica fibres were used in the hydrogenation of citral to citronellal and citronellol in a tubular glass reactor where the catalyst was packed in two layers. The liquid phase was recirculated while the gas phase was flowing concurrently through the reactor to the vent. The highest selectivities to the desired product, citronellol, exceeded 90%. The catalyst performance was competitive with a conventional crushed nickel catalyst.
ISSN:0926-860X
1873-3875
DOI:10.1016/S0926-860X(99)00452-4