Quaternary platinum-based light-alkane dehydrogenation catalyst and preparation method thereof

A technology for dehydrogenation catalysts and low-carbon alkanes, applied in the direction of carbon compound catalysts, catalysts, hydrocarbons, etc., can solve problems such as outstanding stability, no catalyst performance, and unsatisfactory catalyst activity and selectivity. Achieve the effects of improving anti-carbon deposition ability, improving high-temperature regeneration stability, and improving single-pass conversion rate
CN105396586AActive Publication Date: 2016-03-16CHINA NAT OFFSHORE OIL CORP +3
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA NAT OFFSHORE OIL CORP
Publication Date
2016-03-16

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Abstract

The invention discloses a quaternary platinum-based light-alkane dehydrogenation catalyst and a preparation method thereof. The catalyst comprises four components: Pt, Sn, Zr, and Ce, wherein Zr and Ce are added in the preparation of a carrier small aluminium oxide ball, and Sn and the active component Pt are uniformly loaded on the carrier by adopting an impregnation method; based on the weight of the catalyst, the content of Al2O3 is 95.0%-98.0%, the content of Pt is 0.1%-1.0%, the content of Sn is 0.1%-2%, the content of Zr is 0.5%-3.0%, and the content of Ce is 0.5%-2%. The catalyst prepared by the invention has the good catalytic activity when being used in propane dehydrogenation reaction, the catalyst has no obvious activity reduction after multiple-time regeneration, the average conversion per pass of propane is 37% and more, the propylene selection is more than 90%, and the good regeneration stability can be shown.
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Description

technical field

[0001] The invention relates to the technical field of alkane catalytic dehydrogenation, in particular to a quaternary platinum-based catalyst whose active components are evenly distributed and which is suitable for producing propylene by catalytic dehydrogenation of propane or catalytic dehydrogenation of isobutane to produce isobutene and a preparation method thereof. Background technique

[0002] Propylene is an important organic chemical raw material, and its main source is the by-products of traditional oil refining processes such as steam cracking and catalytic cracking. Therefore, the production of propylene is subject to the production of the main products ethylene and refined oil. The propylene output of the current traditional process cannot meet the market demand for propylene, and the market gradually pays attention to the new alternative production process of propylene, including propane dehydrogenation (PDH), methanol to olefins (MTO, MTP), deep ...

Claims

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