Tin-titanium-silicon molecular sieve, preparation method and application thereof, and sulfide oxidation method

A technology of tin-titanium-silicon molecular sieve and titanium-silicon molecular sieve is applied in the field of sulfide oxidation, which can solve the problems of occupying land resources and inventory space, and achieve the effects of modulation selectivity and good catalytic effect.
CN110642263BActive Publication Date: 2021-03-12CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2021-03-12

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Abstract

The present invention involves the field of molecular screens, and a tin titanium silicon molecular sieve and its preparation methods and applications and sulfation oxidation methods are disclosed. 1‑1.8 / X 0.4‑0.9 = C, 0.3 <c <0.85, x 0.4‑0.9 It is the proportion of micro -hole diameter in the range of molecular sieves in the range of 0.4筛0.9nm. 1‑1.8 It is the proportion of micro -hole diameter in the range of a molecular sieve in the range of micropores in the range of 181.8nm.This method includes: mix the catalyst containing titanium silicon molecules with acid solution to obtain a mixture A, and the mixture A is used for the first heat treatment to obtain the first solid;Perform the second heat treatment.The tin titanium silicon molecular sieve provided by the present invention has a special materialized characteristic structure and is used to oxidize the sulfur ether oxidation, which is conducive to the selectivity of the target product.
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Description

technical field

[0001] The invention relates to the field of molecular sieves, in particular to a tin-titanium-silicon molecular sieve, a preparation method of the tin-titanium-silicon molecular sieve, an application of the tin-titanium-silicon molecular sieve in a thioether oxidation reaction and a thioether oxidation method. Background technique

[0002] Titanium-silicon molecular sieve is a molecular sieve whose skeleton is composed of silicon, titanium and oxygen elements. It has broad application prospects in petroleum refining and petrochemical industry. Among them, TS-1 molecular sieve is a new type of titanium-silicon molecular sieve with excellent catalytic selective oxidation performance formed by introducing transition metal element titanium into the molecular sieve framework with ZSM-5 structure.

[0003] TS-1 not only has the catalytic oxidation of titanium, but also has the shape-selective effect and excellent stability of ZSM-5 molecular sieve, and has success...

Claims

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