Effect of catalyst modification on the conversion of methanol to light olefins over SAPO-34
作者： Miles J. van Niekerk , Jack C.Q. Fletcher , Cyril T. O'Connor
DOI: 10.1016/0926-860X(95)00240-5
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摘要: Abstract The catalytic activity and selectivity of as-prepared modified samples SAPO-34 Me-APSO-34 ( Me = Co, Ni ) for the conversion methanol to olefins has been investigated. performance light all catalyst prepared was found be closely related number strong acid sites present. Mild steaming, encountered during deep-bed calcination, increased lifetime due formation stronger probably on external surface crystallites. Selectivities were typical those previously reported essentially constant catalysts absence C 5+ is ascribed ‘cage effect’. Dilution with water as opposed nitrogen utilization value threefold reduced rate coke reaction. Treatments such silanization poisoning by ammonia and, thus, performance.
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