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Catalyst for constructing heteropoly acid compound, peroxide and titanium-silicon molecular sieve as well as preparation method and application thereof

A multi-acid compound and titanium-silicon molecular sieve technology, which is applied in the direction of organic compound/hydride/coordination complex catalyst, molecular sieve catalyst, refining with oxygen-containing compounds, etc., to achieve high activity separation, simple preparation method, and concise process effect

Inactive Publication Date: 2017-05-31
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 for constructing heteropoly acid compound, peroxide and titanium-silicon molecular sieve as well as preparation method and application thereof
  • Catalyst for constructing heteropoly acid compound, peroxide and titanium-silicon molecular sieve as well as preparation method and application thereof
  • Catalyst for constructing heteropoly acid compound, peroxide and titanium-silicon molecular sieve as well as preparation method and application thereof

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

The invention provides a catalyst for constructing a heteropoly acid compound with a Keggin structure, peroxide and a titanium-silicon molecular sieve. The catalyst is characterized by being prepared from the following components in parts by mass: 1-40 parts of the heteropoly acid compound with the Keggin structure, 1-20 parts of peroxide and 98-40 parts of the titanium-silicon molecular sieve. A preparation method of the catalyst comprises the following steps: after preparing titanium silicon zeolite with an MIF (Migratory Inhibitory Factor) structure, introducing the heteropoly acid compound with the Keggin structure and the peroxide into the components; and washing, drying and roasting. The catalyst provided by the invention has high oxidation desulfurization catalytic activity, and the content of organic sulfur can be reduced to be lower than 10microg / g from 200microg / g; the catalyst has good recyclability; and the catalyst is an ideal oxidation desulfurization catalyst with excellent performance. The preparation method of the catalyst is simple, is easy to operate and is low in 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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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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