Kinetic study of ethane oxydehydrogenation over AlPO-5
- National Taiwan Univ., Taipei (Taiwan, Province of China). Dept. of Chemical Engineering
The kinetics of ethane oxydehydrogenation to produce ethylene over AlPO-5, a member of the aluminophosphate molecular sieve family, has been investigated over the temperature range 748--798 K at atmospheric pressure. It was observed that parallel reactions to ethylene and carbon oxides occur on the surface. A kinetic model involving oxygen adsorption was proposed for the ethane oxydehydrogenation. On the basis of the kinetic analysis, it is suggested that the reactions of ethane on the surface through two different sites are the rate-determining step. The apparent activation energy was 83 kcal/mol. For oxygen adsorption on the surface, the changes of enthalpy and entropy were {minus}23 kcal/mol and {minus}25 cal/mol K, respectively. These explain the adsorption phenomena reasonably.
- OSTI ID:
- 142345
- Journal Information:
- Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 12 Vol. 32; ISSN 0888-5885; ISSN IECRED
- Country of Publication:
- United States
- Language:
- English
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