A preparing method of a mercaptan etherification catalyst

A catalyst, etherification technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. Divided into the problems of easy loss of phosphoric acid and polyphosphoric acid, and high catalyst carbon deposition, to achieve good hydrogenation effect, improve the ability and stability of carbon deposition resistance, and weaken the effect of interaction
CN104511287AInactive Publication Date: 2015-04-15CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2015-04-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

A preparing method of a mercaptan etherification catalyst is disclosed. The method includes: (1) dipping an Al2O3 carrier with a potassium salt solution, drying, and calcinating at 300-600 DEG C to obtain a K2O / Al2O3 carrier; and (2) adding a molybdenum-containing compound, a nickel-containing compound and a composite auxiliary agent into deionized water to prepare a dipping solution; and (3) dipping the carrier obtained in the step (1), drying and calcinating at 200-400 DEG C to obtain a NiO-MoO3-K2O / Al2O3 catalyst. The Al2O3 carrier is modified by the K2O so as to enhance carbon deposit resistance and stability of the catalyst. The composite auxiliary agent, the molybdenum-containing compound and the nickel-containing compound form a complex, thus weakening interaction of NiO, MoO3 and the Al2O3 carrier, promoting dispersion of active components in the Al2O3 carrier, and enhancing activity of the catalyst. The catalyst is high in activity of removing mercaptan in gasoline, and has good hydrogenation effects for dienes.
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Description

technical field

[0001] The invention relates to a preparation method of a mercaptan etherification catalyst, in particular to a preparation method of a catalyst used for the reaction of mercaptans and diolefins in catalytic cracking gasoline to generate thioether compounds. Background technique

[0002] Catalytic cracking (FCC) gasoline is currently the main source of gasoline. The output of FCC gasoline in my country accounts for more than 70% of the total gasoline output, and the total sulfur content and mercaptan content of FCC gasoline are very high. Generally, the total sulfur content is between 200 and 1000 μg / g, and the mercaptan content is 10-100 μg / g, so reducing the total sulfur and mercaptans in FCC gasoline is the key to producing high-standard clean gasoline.

[0003] For the removal of mercaptans in catalytic cracked gasoline, there are mainly Merox deodorization process and non-caustic alkali deodorization process, but these two processes can only oxidize merca...

Claims

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