| 摘要 |
A catalyst for converting hydrocarbons includes, based on the weight of the catalyst, 1-60% by weight of a zeolite, 0.1-10% by weight of an assistant catalytic component, 5-98% by weight of a thermotolerant inorganic oxide, and 0-70% by weight of a clay in terms of the oxide. The zeolite is a MFI-structured zeolite-containing phosphor and transition metal(s) or a mixture of the zeolite and a macroporous zeolite, which comprises, based on the weight of the mixture, 75-100% by weight of said MFI-structured zeolite containing phosphor and transition metal(s) and 0-25% by weight of the macroporous zeolite. In terms of the mass of the oxide, the MFI-structured zeolite containing phosphor and transition metal(s) has the following anhydrous chemical formula: <?in-line-formulae description="In-line Formulae" end="lead"?>(0-0.3)Na<SUB>2</SUB>O.(0.3-5.5)Al<SUB>2</SUB>O<SUB>3</SUB>.(1.0-10)P<SUB>2</SUB>O<SUB>5</SUB>.(0.7-15)M1<SUB>x</SUB>O<SUB>y</SUB>.(0.01-5)M2<SUB>m</SUB>O<SUB>n</SUB>(0-10)RE<SUB>2</SUB>O<SUB>3</SUB>.(70-97)SiO<SUB>2</SUB> I <?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>or <?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>(0-0.3)Na<SUB>2</SUB>O.(0.3-5)Al<SUB>2</SUB>O<SUB>3</SUB>.(1.0-10)P<SUB>2</SUB>O<SUB>5</SUB>.(0.7-15)M<SUB>p</SUB>O<SUB>q</SUB>.(0-10)RE<SUB>2</SUB>O<SUB>3</SUB>.(70-98)SiO<SUB>2</SUB> II <?in-line-formulae description="In-line Formulae" end="tail"?> The assistant catalytic component is one or more selected from the group consisting of the alkali earth metals, Group IVB metals, non-noble metals of Group VIII, and rare earth metals of the Periodic Table of the Elements. This catalyst has a higher ability to convert petroleum hydrocarbons and higher yields for propylene, ethylene, and light aromatics.
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