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Catalyst constructed with polyacid compound, peroxide and titanium silicon molecular sieve and its preparation method and application

A multi-acid compound and titanium-silicon molecular sieve technology, which is applied in organic compound/hydride/coordination complex catalysts, molecular sieve catalysts, refining with oxygen-containing compounds, etc., to achieve good desulfurization activity, simple process, and low cost of preparation.

Inactive Publication Date: 2019-05-24
LIAONING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no literature report on the research on the composite catalyst prepared by compounding polyacid, peroxide and titanium silicalite

Method used

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  • Catalyst constructed with polyacid compound, peroxide and titanium silicon molecular sieve and its preparation method and application
  • Catalyst constructed with polyacid compound, peroxide and titanium silicon molecular sieve and its preparation method and application
  • Catalyst constructed with polyacid compound, peroxide and titanium silicon molecular sieve and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Example 1: TS-1-peroxide-H 3 PMo 12 o 40 Synthesis

[0066] (1) Under the conditions of normal temperature, normal pressure and stirring, add Keggin structure phosphomolybdic acid into water or ethanol to adjust the pH value of the solution to 0.5-7; the mass ratio of the Keggin structure phosphomolybdic acid and water or ethanol The ratio is: Keggin structure phosphomolybdic acid: water or ethanol = 0.15-80: 10.0-1000;

[0067] (2) Under the conditions of normal temperature, normal pressure and stirring, add the peroxide with a concentration of 5-80% by mass percentage into water to prepare a solution; the peroxide with a concentration of 5-80% by mass percentage The mass ratio with water is: the peroxide containing mass percent concentration of 5-80%: water=0.05-30: 1.0-1000;

[0068] Add the solution obtained in step (2) to the solution obtained in step (1) to prepare solution A;

[0069] The mass percentage of the concentration of Keggin structure phosphomolybd...

Embodiment 2

[0073] Example 2: TS-1-peroxide-H 3 PW 12 o 40 Synthesis

[0074] (1) Add the Keggin structure phosphotungstic acid to water or ethanol under normal temperature, normal pressure and stirring conditions, and adjust the pH value of the solution to 0.5-7; the mass ratio of the Keggin structure phosphotungstic acid and water or ethanol The ratio is: Keggin structure phosphotungstic acid: water or ethanol = 0.15-80: 10.0-1000;

[0075] (2) Under the conditions of normal temperature, normal pressure and stirring, add the peroxide with a concentration of 5-80% by mass percentage into water to prepare a solution; the peroxide with a concentration of 5-80% by mass percentage The mass ratio with water is: the peroxide containing mass percent concentration of 5-80%: water=0.05-30: 1.0-1000;

[0076] Add the solution obtained in step (2) to the solution obtained in step (1) to prepare solution A;

[0077] The mass percentage of the concentration of Keggin structure phosphotungstic ac...

Embodiment 3

[0081] Example 3: TS-1-peroxide-H 4 SiMo 12 o 40 Synthesis

[0082] (1) Under the conditions of normal temperature, normal pressure and stirring, add Keggin structure silicomomolybdic acid to water or ethanol to adjust the pH value of the solution to 0.5-7; The ratio is: Keggin structure silicomolybdic acid: water or ethanol = 0.15-80: 10.0-1000;

[0083] (2) Under the conditions of normal temperature, normal pressure and stirring, add the peroxide with a concentration of 5-80% by mass percentage into water to prepare a solution; the peroxide with a concentration of 5-80% by mass percentage The mass ratio with water is: the peroxide containing mass percent concentration of 5-80%: water=0.05-30: 1.0-1000;

[0084] Add the solution obtained in step (2) to the solution obtained in step (1) to prepare solution A;

[0085] The mass percentage of the concentration of Keggin structure molybdomolybdic acid and peroxide in the solution A is: 0.15-80:0.05-30;

[0086] (3) Add tita...

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Abstract

A catalyst constructed with Keggin structure polyacid compound, peroxide and titanium-silicon molecular sieve, which is characterized in that: the components of the catalyst are: Keggin structure polyacid compound mass fraction is 1-40 parts, and the mass fraction of peroxide is The mass fraction is 1-20 parts and titanium-silicon molecular sieve 98-40 parts. The catalyst is prepared by preparing titanium silicalite with an MFI structure, introducing a Keggin structure polyacid compound and a peroxide component into its components, and then washing, drying and roasting the catalyst. The catalyst of the present invention has high catalytic activity for oxidative desulfurization, can reduce the organic sulfur content from 200 μg / g to less than 10 μg / g, has good recyclability, and is an ideal oxidative desulfurization catalyst with excellent performance. The catalyst preparation method is simple, easy to operate and has low preparation cost.

Description

technical field [0001] The invention relates to a catalyst and its preparation method and application, in particular to a catalyst constructed with Keggin structure polyacid compound, peroxide and titanium silicon molecular sieve, its preparation method and its application in organic sulfur removal. Background technique [0002] Based on environmental protection considerations, the sulfur content of gasoline and diesel for vehicles must be controlled below 10 μg / g. At present, among many desulfurization methods, oxidative desulfurization has attracted more and more researchers because of its high desulfurization rate and mild reaction conditions. It is important to note that the research and application of polyacid compounds as solid catalysts in the oxidation removal of organic sulfides has been reported in the literature. [0003] Li Can and Jiang Zongxuan published an article titled "Ultra-deep desulfurization of diesel: Oxidation with arecoverable catalyst assembled in e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/18B01J31/16B01J27/188C10G27/12
CPCC10G27/12B01J27/188B01J29/89B01J35/19
Inventor 陈立东刘迪佟欢包媛媛姬艳晴丁威岳倩贾意欣
Owner LIAONING NORMAL UNIVERSITY
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