期刊
CHINESE JOURNAL OF CATALYSIS
卷 29, 期 11, 页码 1169-1177出版社
SCIENCE PRESS
DOI: 10.1016/S1872-2067(09)60020-6
关键词
membrane reactor; thermodynamic control; kinetic control; partial oxidation of hydrocarbons; water dissociation; water splitting
资金
- German Ministry of Education and Research (BMBF)
For thermodynamically and kinetically controlled catalytic reactions, the influence of a membrane is discussed. For reactions operating near to the thermodynamic equilibrium, the conversion can be increased if one/all of the products is/are selectively removed in ail extractor type membrane reactor. Examples are esterifications, dehydrogenations, and water dissociation using water, hydrogen, and oxygen selective membranes, respectively. For kinetically controlled reactions, i.e. reactions with a very negative free enthalpy, mainly the selectivity can be increased via the control of the partial pressure of the educts by dosing effects using distributor/contactor membrane reactors. Examples are partial oxidations and hydrogenations. In detail, the application of an oxygen transporting pcrovskite hollow fiber membrane with a nano-designed grain boundary structure in the hydrogen production by thermal water splitting and in the partial oxidation of hydrocarbons as case studies for thermodynamically and kinetically controlled reactions is discussed.
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