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A kind of loaded metal phthalocyanine adsorbent and its preparation method and application

A metal phthalocyanine and metal-loaded technology, which is applied in the fields of catalysis, chemical industry and materials, can solve the problems of weak metal phthalocyanine affinity, low catalyst loading, and limited catalytic effect, and achieve no secondary pollution and high metal phthalocyanine content , The effect of simple production process

Active Publication Date: 2018-03-16
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as CN1200958A discloses a kind of mercaptan oxidation or oil product deodorization catalyst that solid basic oxide supports metal phthalocyanine, when this catalyst is used for mercaptan oxidation reaction, it does not need to add liquid alkali and has higher catalytic activity at the same time, this method Limited by the low solubility of metal phthalocyanines in solvents and the weak affinity of solid basic oxides to metal phthalocyanines in solvents, the resulting catalyst loadings are low
CN1986054A discloses a metal phthalocyanine photocatalyst loaded with cross-linked polydivinylbenzene resin as a carrier and a preparation method. The catalyst has dual functions of adsorption and photocatalysis, and can be used for industrial waste water, urban domestic sewage, surface water and drinking water. Photocatalytic treatment of phenolic pollutants, but the low loading of this method limits its catalytic effect

Method used

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  • A kind of loaded metal phthalocyanine adsorbent and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 25g SiO2 2 Add 4mm spherical particles into a 250ml three-necked flask, add 6g of 3-mercaptopropyltrimethoxysilane, heat up to 80°C, react for 4h under stirring, wash and dry. Add 2-vinylpyridine and hexadecylchlorophthalocyanine iron at 70°C, add tetrahydrofuran solvent, stir for 12 hours, then add SiO2 to the three-necked flask 2 @3-Mercaptopropyltrimethoxysilane support, react at 85°C for 24h. After the reaction, it was washed with acetone and dried to obtain a loading capacity (mass fraction) of about 25%, a loading thickness of 1 mm, and a specific surface area of ​​250 m 2 / g phthalocyanine iron loaded SiO 2 . A fixed-bed reaction device is used to adsorb and remove dibenzothiophene, and the removal rate can reach 95%.

Embodiment 2

[0030] Weigh 25g SiO2 2 6mm spherical particles were added to a 250ml three-neck flask, 5g of γ-chloropropyltriethoxysilane was added, the temperature was raised to 70°C, the mixture was stirred for 4 hours, washed and dried. Add 2-vinylpiperidine and cobalt dodecabromophthalocyanine at 70°C, add tetrahydrofuran solvent, stir for 12 hours, then add SiO to the three-necked flask 2 @γ-Chloropropyltrioxyethylsilane carrier, react at 75°C for 24h. After the reaction, wash repeatedly with acetone and ethanol, and dry to obtain a loading capacity (mass fraction) of about 20%, a loading thickness of 0.8 mm, and a specific surface area of ​​225 m 2 / g cobalt phthalocyanine supported on SiO 2 . A fixed bed reaction device is used to adsorb and remove dibenzothiophene, and the removal rate can reach 96%.

Embodiment 3

[0032] Weigh 25g of MCM-41 molecular sieve, add it into a 250ml three-neck flask, add 5g of 3-aminopropyltriethoxysilane, raise the temperature to 75°C, react for 5h under stirring, wash and dry. Add N'N-dimethylformamide solvent to 2-vinylpyridine and 16-hexafluorophosphate iron phthalocyanine at 70°C, stir for 12 hours, and then add SiO to the three-necked flask 2 @3-Aminopropyltriethoxysilane carrier, react at 85°C for 24h. After the reaction, wash repeatedly with acetone, ethanol and ethyl acetate, and dry to obtain a loading capacity (mass fraction) of about 10%, a loading thickness of 0.1mm, and a specific surface area of ​​180m 2 / g of phthalocyanine iron loaded MCM-41 molecular sieve. A fixed bed reaction device is used to adsorb and remove dibenzothiophene, and the removal rate can reach 90%.

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Abstract

The invention relates to a loaded metal phthalocyanine adsorbent, which belongs to the technical field of materials and chemical industry. The adsorbent comprises particles containing phthalocyanine dispersed on the surface of a porous carrier, wherein the adsorbent has a phthalocyanine weight content of 3%-50%. , the adsorbent has a specific surface area of ​​150m2 / g-400m2 / g measured by a specific surface area and a microporous adsorption analyzer. The adsorbent provided by the present invention has the characteristics of large specific surface area, high metal phthalocyanine content, strong adsorption capacity and good recycling effect. It can adsorb and remove dibenzothiophene under mild conditions, and the adsorption removal rate can reach more than 90 percent. At the same time, its preparation method and application are provided.

Description

technical field [0001] The invention belongs to the technical fields of catalysis, materials and chemical industry, and in particular relates to a loaded metal phthalocyanine adsorbent and its preparation method and application. Background technique [0002] Metal phthalocyanines have attracted attention because of their special structures, and they are widely used in various fields, such as catalysts, fuels, conductive materials, medicine, molecular materials, and LB films. Industrially, metal phthalocyanines have been used as catalysts for deodorization-oxidation of mercaptans, but metal phthalocyanines tend to form dimers or polymers during the catalytic process, which reduces the catalytic activity, and metal phthalocyanines are loaded on the carrier It is an ideal way to effectively prevent the aggregation of phthalocyanine molecules, easily realize the separation of phthalocyanine and reactants, and carry out continuous reaction design. It has been reported that metal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/30B01D53/02
Inventor 张娟胡颜荟任腾杰
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY