Ethane oxydehydrogenation over supported vanadium oxides
- National Taiwan Univ., Taipei (Taiwan, Province of China). Dept. of Chemical Engineering
Ethane oxydehydrogenation to produce ethylene was studied over vanadium oxides supported on either silica gel, HZSM-5, silicalite, or AlPO[sub 4]-5. Characterization of the catalysts was carried out by X-ray photoelectron spectroscopy for the vanadium binding energy, temperature-programmed desorption of ammonia for the number of acidic sites on the supports, and redox titration for the number of chemisorption sites on vanadium oxides. The results of kinetic studies showed that the ethane oxydehydrogenation rates over vanadium oxide were enhanced by the presence of acidic sites on the supports. The rate equations thus derived suggested that the reduction of vanadium oxide sites by adsorbed ethane was the rate-determining step. It is likely that the support acidity can either promote the vanadium oxide reduction activity or increase the equilibrium constant of ethane adsorption on the catalyst.
- OSTI ID:
- 6847779
- Journal Information:
- Industrial and Engineering Chemistry Research; (United States), Journal Name: Industrial and Engineering Chemistry Research; (United States) Vol. 33:9; ISSN IECRED; ISSN 0888-5885
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020500* -- Petroleum-- Products & By-Products
ADSORBENTS
ALKANES
ALKENES
CATALYST SUPPORTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
DATA
DEHYDROGENATION
EQUATIONS
ETHANE
ETHYLENE
EVALUATION
EXPERIMENTAL DATA
HYDROCARBONS
INFORMATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
KINETIC EQUATIONS
MATERIALS
MINERALS
MOLECULAR SIEVES
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PH VALUE
SILICATE MINERALS
SURFACE PROPERTIES
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
VANADIUM OXIDES
ZEOLITES