Gasoline hydrorefining catalyst, and preparation method thereof

Abstract

The invention discloses a gasoline hydrorefining catalyst. The gasoline hydrorefining catalyst comprises a carrier and an active component; the active component is loaded onto the carrier, a heteropoly acid is taken as the active component, and an Al2O3-TS-1-graphene composite oxide is taken as the carrier; the specific surface area of the gasoline hydrorefining catalyst ranges from 250 to 500m2 / g, the pore volume ranges from 0.5 to 0.8mL / g. The invention also relates to a preparation method of the gasoline hydrorefining catalyst. According to the preparation method, a molecular sieve is uniformly mixed with alumina and graphene, a nitric acid solution and an appropriate amount of water are added, and mixing kneading, strip extrusion, drying, and roasting are carried out so as to obtain the carrier of the gasoline hydrorefining catalyst; the carrier is subjected to dipping with a solution containing the heteropoly acid, and then drying and roasting are carried out so as to obtain the gasoline hydrorefining catalyst. The gasoline hydrorefining catalyst possesses a specific pore diameter, is large in pore volume, is high in hydrodesulfurization activity, and can be taken as a gasoline hydrorefining catalyst.

Description

technical field [0001] The invention relates to a gasoline hydrofinishing catalyst and a preparation method thereof, which are suitable for the gasoline hydrofinishing process in the petroleum refining field. Background technique [0002] At present, hydrodesulfurization is a main method to reduce the sulfur content in gasoline raw materials. It can simultaneously perform hydrodesulfurization, hydrodenitrogenation, olefin saturation and other reactions to produce National V gasoline or its blending components. [0003] In 2017, my country fully implemented the National V motor gasoline standard, and plans to implement the National VI motor gasoline standard in 2019. Compared with straight-run gasoline, catalytic gasoline and coker gasoline in gasoline raw materials have higher sulfur, nitrogen, and olefin content, and are more difficult to process. In order to meet the requirements of more stringent standards and to cope with the trend of inferior crude oil, the research an...

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Problems solved by technology

[0004] CN100998952A prepares a coker gasoline hydrotreating catalyst containing Mo, W, Ni and P. The catalyst has high metal content and has a low olefin saturation temperature when coking gasoline is processed, and olefin saturation, desulfurization, and denitrogenation reactions are carried out at a relatively low temperature , the coking speed is slow and the regeneration period is long, but the catalyst is prepared by the double impregnation method, the preparation process is cumbersome, and the desulfurization and nitrogen removal effects are not good at low temperatures

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