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Ammonium activation of zeolites in the presence of gaseous ammonia
Ammonium activation of zeolites in the presence of gaseous ammonia
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机译:气态氨存在下沸石对铵的活化
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摘要
Alumina-composited zeolite catalysts are activated by contact with an aqueous ammonium solution under ammonia gas pressure such that a pH of at least about 8 is maintained in the solution. The treated zeolite may thereafter be calcined without prior ammonium-exchange to provide the zeolite in the hydrogen form.
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