Periodic operation studies on the partial oxidation of propylene to acrolein and acrylic acid

Can periodic operation improve the selectivity in partial oxidation? Experiments were performed using a proprietary Sb/Sn/V oxide catalyst with a differential microcatalytic reactor free of transport limitations. Most experiments were performed at atmospheric pressure and 340°C. Steady-state experim...

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Bibliographic Details
Published inChemical engineering science Vol. 47; no. 9-11; pp. 2885 - 2890
Main Authors Saleh-Alhamed, Y.A., Hudgins, R.R., Silveston, P.L.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Oxford Elsevier Ltd 08.06.1992
Elsevier
Subjects
Applied sciences
Chemical industry and chemicals
Exact sciences and technology
Industrial chemicals
Organic industry
Congress
Catalytic reaction
Hydrocarbon
Periodic behavior
Acrylic acid
Experimental study
Antimony Oxides
Partial oxidation
Vanadium Oxides
Acrolein
Propene
Chemical reaction
Tin Oxides
Kinetics
Reaction engineering
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Summary:Can periodic operation improve the selectivity in partial oxidation? Experiments were performed using a proprietary Sb/Sn/V oxide catalyst with a differential microcatalytic reactor free of transport limitations. Most experiments were performed at atmospheric pressure and 340°C. Steady-state experiments showed a strong effect of water on selectivity as well as rate inhibition by propylene. Thus, two strategies were explored: water cycling and propylene cycling. Compared with the highest values attainable under steady state, water cycling resulted in only a small selectivity improvement and time-average rates of formation were always lower. Large improvements occured with propylene cycling: as high as 90% for the rate of formation of acrylic acid and 40% for acrolein.
ISSN:0009-2509
1873-4405
DOI:10.1016/0009-2509(92)87146-H