Catalytic conversions of alcohols--12. Selectivity of hafnium oxide

Journal Article · Sat Sep 01 00:00:00 EDT 1979 · Ind. Eng. Chem., Prod. Res. Dev.; (United States)

DOI:https://doi.org/10.1021/i360071a008· OSTI ID:6902924

Al-bahar, F ^[1]; Davis, B H; Collins, D J; Watters, J C

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1. Univ. Louisville, KY

In conversion of 2-pentanol, 2-hexanol, 2-octanol, 3-methyl-2-butanol, and 4-methyl-2-pentanol at 220/sup 0/-350/sup 0/C, both air and hydrogen-pretreated hafnia prepared by different methods showed stable activity and 90-98Vertical Bar3< selectivity for alcohol dehydrogenation to alkenes, but no selectivity for any of the three alkene isomers (1-, trans-2-, and cis-2-) allowed by ..beta..-elimination, all of which were formed in about equal amounts (nonequilibrium distribution). The extent of cis-trans isomerization of the alcohols was much less than that of the dehydration. For tertiary alcohols, the alkene selectivity was similar to that of many other metal oxides, e.g., 40-45Vertical Bar3< selectivity for 1-alkenes with 2-methyl-2-pentanol and 16-20Vertical Bar3< (near-equilibrium distribution) with 3-methyl-3-pentanol. Overall, hafnia resembles titania, but differs greatly from zirconia and thoria.

• OSTI ID: 6902924
• Journal Information: Ind. Eng. Chem., Prod. Res. Dev.; (United States), Vol. 18:3
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALCOHOLS
CONVERSION
CATALYSTS
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
COMPARATIVE EVALUATIONS
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
EXPERIMENTAL DATA
HAFNIUM OXIDES
CHALCOGENIDES
DATA
HAFNIUM COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
KINETICS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
YIELDS
400201* - Chemical &amp; Physicochemical Properties
400301 - Organic Chemistry- Chemical &amp; Physicochemical Properties- (-1987)