| 简介 |
FIELD : chemistry.
SUBSTANCE : catalyst contains a catalyst (a) containing faujasite-type zeolite (A) having a crystal cell size in range of 2.435 nm to 2.455 nm, a matrix component and rare earth elements; and a catalyst (b) containing faujasite-type zeolite (B) having a crystal cell size in range of 2.445 nm to 2.462 nm, a matrix component, phosphorus and magnesium.
EFFECT : catalyst exhibits high hydrothermal stability, high cracking capacity of the residual fraction and high selectivity even with a reduced content of rare earth oxides.
9 cl, 8 tbl, 17 ex |
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