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Selective toluene disproportionation process (STDP) with ex situ selectivated zeolite catalyst
Selective toluene disproportionation process (STDP) with ex situ selectivated zeolite catalyst
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机译:异位选择性沸石催化剂的选择性甲苯歧化工艺(STDP)
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摘要
A process for shape selective hydrocarbon conversion that involves contacting a hydrocarbon feedsteam, including toluene, under conversion conditions with a catalytic molecular sieve which has been modified by being ex situ selectivated with a silicon compound. The ex situ selectivation involves exposing the molecular sieve to at least two silicon impregnation sequences, each sequence comprising an impregnation with a silicon compound followed by calcination. The modified catalyst used in the process may also be steamed. Optionally, the modified catalyst may be trim-selectivated.
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