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Substituent effects in heterogeneous catalysis--5. The steric hindrance of bulky alkyl substituents in cyclohexanone hydrogenation

Abstract

The steric hindrance of bulky alkyl substituents in cyclohexanone hydrogenation was demonstrated by the reactivities of 2-isopropyl and 2-tert.-butyl cyclohexanone relative to cyclohexanone in individual and competitive hydrogenation at 30/sup 0/C over alumina-supported ruthenium, rhodium, and platinum catalysts. The results indicate that the ketone adsorption onto the catalyst is sterically hindered by the alkyl substitution significantly more than the surface reaction which follows the adsorption.
Publication Date:
Feb 01, 1979
Product Type:
Journal Article
Reference Number:
EDB-84-101370
Resource Relation:
Journal Name: Bull. Chem. Soc. Jpn.; (Japan); Journal Volume: 52:2
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ALUMINIUM OXIDES; CATALYTIC EFFECTS; CYCLOHEXANONE; HYDROGENATION; CATALYSTS; PLATINUM; RHODIUM; RUTHENIUM; ALKYL RADICALS; CATALYSIS; COMPARATIVE EVALUATIONS; MEDIUM TEMPERATURE; STEREOCHEMISTRY; ALUMINIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; ELEMENTS; KETONES; METALS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PLATINUM METALS; RADICALS; TRANSITION ELEMENTS; 400301* - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)
OSTI ID:
6811041
Research Organizations:
Inst. Phys. Chem. Res., Saitama
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: BCSJA
Submitting Site:
HEDB
Size:
Pages: 633-634
Announcement Date:

Citation Formats

Chihara, T, and Tanaka, K. Substituent effects in heterogeneous catalysis--5. The steric hindrance of bulky alkyl substituents in cyclohexanone hydrogenation. Japan: N. p., 1979. Web. doi:10.1246/bcsj.52.633.
Chihara, T, & Tanaka, K. Substituent effects in heterogeneous catalysis--5. The steric hindrance of bulky alkyl substituents in cyclohexanone hydrogenation. Japan. doi:10.1246/bcsj.52.633.
Chihara, T, and Tanaka, K. 1979. "Substituent effects in heterogeneous catalysis--5. The steric hindrance of bulky alkyl substituents in cyclohexanone hydrogenation." Japan. doi:10.1246/bcsj.52.633. https://www.osti.gov/servlets/purl/10.1246/bcsj.52.633.
@misc{etde_6811041,
title = {Substituent effects in heterogeneous catalysis--5. The steric hindrance of bulky alkyl substituents in cyclohexanone hydrogenation}
author = {Chihara, T, and Tanaka, K}
abstractNote = {The steric hindrance of bulky alkyl substituents in cyclohexanone hydrogenation was demonstrated by the reactivities of 2-isopropyl and 2-tert.-butyl cyclohexanone relative to cyclohexanone in individual and competitive hydrogenation at 30/sup 0/C over alumina-supported ruthenium, rhodium, and platinum catalysts. The results indicate that the ketone adsorption onto the catalyst is sterically hindered by the alkyl substitution significantly more than the surface reaction which follows the adsorption.}
doi = {10.1246/bcsj.52.633}
journal = {Bull. Chem. Soc. Jpn.; (Japan)}
volume = {52:2}
journal type = {AC}
place = {Japan}
year = {1979}
month = {Feb}
}