Crystallite size effect in the selective oxidation of butene to butadiene on iron oxide. 2. Reaction studies

Journal Article · Thu Jun 07 04:00:00 EDT 1984 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j150656a020· OSTI ID:6634993

Yang, B L; Hong, F; Kung, H H

The selective oxidation of 1-butene to butadiene was studied over a series of silica-supported and unsupported iron oxide catalysts of average crystallize sizes ranging from 2.5 to 61 nm. The reaction was studied at 300, 350, and 375/sup 0/C under conditions that resulted in low conversions. The selectivity for butadiene ranged from about 80% to below 50%. In general, it was higher for catalysts of smaller crystallite sizes and lower for larger crystallite sizes. The areal rate appeared to have a small dependence on the crystallite size. However, this trend could be due to the fact that the iron oxide surface areas were calculated by using the average crystallite sizes, which did not properly account for the different crystallite size distributions. Possible explanations for the variation of selectivity with crystallize sizes were discussed.

• Research Organization: Northwestern Univ., Evanston, IL
• OSTI ID: 6634993
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 88:12; ISSN JPCHA
• Country of Publication: United States
• Language: English

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ALKENES
BUTADIENE
BUTENES
CATALYSIS
CATALYST SUPPORTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
DATA
DIENES
EXPERIMENTAL DATA
HYDROCARBONS
INFORMATION
IRON COMPOUNDS
IRON OXIDES
MINERALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDATION
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
POLYENES
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SYNTHESIS
TEMPERATURE EFFECTS
TRANSITION ELEMENT COMPOUNDS