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Preparation method of mesoporous TiO2-SiO2 loaded sulfonated metal phthalocyanine catalyst

A sulfonic acid metal, catalyst technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of complex preparation process, reduced catalytic capacity, difficult industrialization, etc., and achieve high selectivity. , Easy to operate, high surface activity effect

Active Publication Date: 2017-08-18
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dissolving ability of free metal phthalocyanine is weak, and it is in a dispersed state in the solution. It is easy to form dimers and reduce the catalytic ability, and it is difficult to recycle and cause secondary pollution.
Yan Ping et al. prepared adrenaline biomimetic catalysts with octacarboxyiron phthalocyanine and porous silica-supported octacarboxyiron phthalocyanine. Octacarboxyiron phthalocyanine needs to be catalyzed by tert-butyl hydroperoxide to catalyze adrenaline. Oxidation; Patent ZL201410053217.9 discloses a mesoporous silica-supported metal phthalocyanine-supported magnetic catalyst and its preparation method. Although the catalyst has recovery performance, the preparation process is complicated, the cost is high, and the industrialization is difficult

Method used

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  • Preparation method of mesoporous TiO2-SiO2 loaded sulfonated metal phthalocyanine catalyst
  • Preparation method of mesoporous TiO2-SiO2 loaded sulfonated metal phthalocyanine catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) TiO 2 -SiO 2 preparation of

[0032] a. Dissolve 9.0 mL tetrabutyl titanate in 30.0 mL dilute hydrochloric acid solution with a concentration of 5.0 mol / L at room temperature to prepare solution A;

[0033] b. First, dissolve 1.2 g of cetyltrimethylammonium bromide in 35.0 mL of 15% ammonia water, and then gradually add 6.0 mL of ethyl orthosilicate dropwise under stirring conditions to prepare solution B.

[0034] c. Slowly add solution A dropwise to solution B under stirring conditions, continue to stir and react at 50°C for 4 hours, then filter the reaction product with suction, and wash the filter cake with ethanol, after air drying, the solid is calcined at 550°C After 6 hours, a white solid was obtained, which was mesoporous TiO 2 -SiO 2 .

[0035] 2) Mesoporous TiO 2 -SiO 2 Preparation of Supported Copper Phthalocyanine Disulfonate

[0036] At room temperature, 1.0 g TiO 2 -SiO 2 Disperse 25.0 mL in a mixed solvent of water and ethanol (1:1), then ad...

Embodiment 2

[0038] 1) TiO 2 -SiO 2 preparation of

[0039] a. Dissolve 9.0 mL of tetrabutyl titanate in 30.0 mL of 5.0 mol / L dilute hydrochloric acid solution at room temperature to prepare solution A;

[0040] b. First, dissolve 1.2 g of cetyltrimethylammonium bromide in 35.0 mL of 15% ammonia water, and then gradually add 6.0 mL of ethyl orthosilicate dropwise under stirring conditions to prepare solution B.

[0041]c. Slowly add solution A dropwise to solution B under stirring conditions, continue to stir and react at 50°C for 4 hours, then filter the reaction product with suction, and wash the filter cake with ethanol, after air drying, the solid is calcined at 550°C After 6 hours, a white solid was obtained, which was mesoporous TiO 2 -SiO 2 .

[0042] 2) Mesoporous TiO 2 -SiO 2 Preparation of Cobalt Phthalocyanine Supported Disulfonic Acid

[0043] At room temperature, 1.0 g TiO 2 -SiO 2 Disperse 25.0 mL in a mixed solvent of water and ethanol (1:1), then add 5 mL of an aq...

Embodiment 3

[0045] 1) TiO 2 -SiO 2 preparation of

[0046] a. Dissolve 9.0 mL of tetrabutyl titanate in 36.0 mL of 5.0 mol / L dilute hydrochloric acid solution at room temperature to prepare solution A;

[0047] b. First, dissolve 1.2 g of cetyltrimethylammonium bromide in 30.0 mL of 15% ammonia water, and then gradually add 6.5 mL of methyl orthosilicate dropwise under stirring conditions to prepare solution B.

[0048] c. Slowly add solution A to solution B under stirring conditions, continue to stir and react at 60°C for 4 hours, then filter the reaction product with suction, and wash the filter cake with ethanol, after air drying, the solid is calcined at 650°C After 6 hours, a white solid was obtained, which was mesoporous TiO 2 -SiO 2 .

[0049] 2) Mesoporous TiO 2 -SiO 2 Preparation of Supported Copper Phthalocyanine Disulfonate

[0050] At room temperature, 1.0 g TiO 2 -SiO 2 Disperse 25.0 mL in a mixed solvent of water and ethanol (1:1), then add 5 mL of an aqueous solut...

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Abstract

The invention discloses a preparation method of a mesoporous TiO2-SiO2 loaded sulfonated metal phthalocyanine catalyst. The preparation method includes following steps: S1, at room temperature, dispersing mesoporous TiO2-SiO2 in an alcohol-water mixed solvent, adding a sulfonated metal phthalocyanine solution, and stirring for 24h to obtain mesoporous TiO2-SiO2 reaction stoste; S2, subjecting the mesoporous TiO2-SiO2 reaction stoste to suction filtering and vacuum drying sequentially to obtain mesoporous TiO2-SiO2 loaded sulfonated metal phthalocyanine. The mesoporous TiO2-SiO2 loaded sulfonated metal phthalocyanine prepared by the method has the advantages of high selectivity to a catalytic substrate, catecholamine, high catalytic speed and mild reaction condition.

Description

technical field [0001] The invention belongs to the technical field of catalyst synthesis, in particular to a mesoporous TiO 2 -SiO 2 The preparation method of the supported sulfonic acid metal phthalocyanine catalyst. Background technique [0002] Catecholamines include neurological substances such as epinephrine, norepinephrine, and dopamine. The molecules contain catechol and amine groups, which have important physiological functions and pharmacological properties. To study the transformation process and final products of catecholamines in the human body, for a certain Early diagnosis and treatment of some common diseases (such as hypertension, coronary heart disease, Parkinson's disease, myocardial infarction, etc.) are of great significance. [0003] Catechol skeleton ( figure 1 ) makes catecholamines easily oxidized, and its biological function is closely related to its oxidation process. At present, many artificially synthesized catalysts are used for the catalyti...

Claims

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Application Information

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IPC IPC(8): B01J31/22B01J21/08
CPCB01J21/08B01J31/183B01J37/0009B01J37/0201B01J37/033B01J35/51B01J35/60
Inventor 李明田谭苏芸聂鑫钟丽萍杨瑞嵩王红曾宪光
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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