| 简介 |
A catalyst for hydrocarbon converting comprises 1-60wt. % zeolite, 0.1-10wt. % co-catalyst (on the basis of the oxide), 5-98wt. % refractory inorganic oxide, 0-70wt. % clay based on the total weight of the catalyst, wherein the zeolite is MFI structure zeolite comprising phosphor and transition metals or the mixture of MFI structure and a large-pore zeolite, which contains 75-100 wt % MFI structure zeolite and 0-25 wt % large-pore zeolite relative to the total weight of the zeolite. On the basis of the weight of oxide, the MFI structure zeolite comprising phosphor and transition metals has anhydrous chemical formula as follows : (0-0.3)Na20?(0.3-5.5)A1203?(1.0-10)P205?(0.7-15)M?1xOy?(0.01-5)M2m0n?(0-10)RE203?(70-97)SiO2 I or (0-0.3)Na20?(0.3-5)A1203?(1.0-10)P205?(0.7-15)MpOq?(0-10)RE203?(70-98)Si02 II wherein the co-catalyst selects from one or more of the group of alkaline earth, IVB, non-noble metals in VIII group and rare-earth metals. The catalyst has high petroleum hydrocarbon conversion ability, and the yields of propylene, ethylene and light aromatics are higher. |
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