Preparation method and application of polyamide-amine dendrimer polymer immobilized heteropoly acid catalyst

A polyamide and dendritic technology, which is used in the preparation of polyamide-amine dendritic polymer immobilized heteropolyacid catalysts, and the application field in oxidative desulfurization, can solve the problem of poor oxidative desulfurization effect, low surface area and porosity, and impurities. Problems such as poor compatibility between polyacid and oil phase, to achieve the effect of improved desulfurization efficiency, large specific surface area, and environmentally friendly production process

Inactive Publication Date: 2018-07-20
HAINAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the technical problems existing in the prior art that the surface area and porosity of the oxidative desulfurization of the heteropoly acid are low, and the compatibility of the heteropoly acid immobilized with inorganic substances and the oil phase is poor, resulting in poor oxidative desulfurization effect

Method used

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  • Preparation method and application of polyamide-amine dendrimer polymer immobilized heteropoly acid catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Polyamide-amine dendrimer / H 3 PW 12 O 40 Preparation:

[0025] Add 2g of polyamide-amine dendrimer (generation 1) to 50ml of deionized water, stir for 2h, the temperature is 30 ℃; 3g heteropoly acid (H 3 PW 12 O 40 ) Dissolve in 30ml of deionized water to prepare a solution, and add the above polyamide-amine dendritic polymer solution dropwise, control the temperature at 30℃, stir vigorously for 2h, and separate by dialysis to obtain a polyamide-amine dendritic polymer. Molecularly fixed heteropoly acid catalyst.

Embodiment 2

[0027] Polyamide-amine dendrimer / H 3 PMo 12 O 40 Preparation:

[0028] 1.5g of polyamide-amine dendrimer (generation 2) was added to 40ml of deionized water, stirred for 3h, the temperature was 40℃; 2g of heteropolyacid (H 3 PMo 12 O 40 ) Dissolve in 20ml of deionized water to prepare a solution, and add the above polyamide-amine dendritic polymer solution dropwise, control the temperature at 50℃, stir vigorously for 3h, and separate by dialysis to obtain polyamide-amine dendritic polymer. Molecularly fixed heteropoly acid catalyst.

Embodiment 3

[0030] Polyamide-amine dendrimer / H 4 SiW 12 O 40 Preparation:

[0031] 1.5g of polyamide-amine dendrimer (generation number 3) was added to 40ml of deionized water, stirred for 3h, the temperature was 40 ℃; 2g heteropoly acid (H 4 SiW 12 O 40 ) Dissolve in 20ml of deionized water to prepare a solution, and add the above polyamide-amine dendritic polymer solution dropwise, control the temperature at 50℃, stir vigorously for 4h, and separate by dialysis to obtain polyamide-amine dendritic polymer. Molecularly fixed heteropoly acid catalyst.

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Abstract

The invention belongs to the crossing field of deep processing of petrochemical oil products and environmental protection technology, and particularly relates to a preparation method and an application of a polyamide-amine dendrimer polymer immobilized heteropoly acid catalyst. The method comprises the steps as follows: adding a polyamide-amine dendrimer polymer to deionized water, and performingheating and stirring; dissolving heteropoly acid in deionized water to prepare a solution and dropwise adding a polyamide-amine dendrimer polymer solution, controlling the temperature, and performingintense stirring and dialyzing and separating to prepare the polyamide-amine dendrimer polymer immobilized heteropoly acid catalyst. Compared with the traditional catalyst, when applied to oxidative desulfurization, the catalyst prepared with the method has the advantages that the desulfurization condition is mild, desulfurization can be performed in the hydrogen peroxide system with lower concentration (0.5%-5%), the decomposition rate of hydrogen peroxide is low, and the desulfurization effect in oil products is good.

Description

Technical field [0001] The invention belongs to the cross-field of petrochemical oil deep processing industry and environmental protection technology, and specifically relates to a preparation method of a polyamide-amine dendritic polymer fixed heteropolyacid catalyst and its application in oxidative desulfurization. Background technique [0002] In recent years, the ever-increasing energy demand and increasingly serious environmental problems have made the refining of crude oil face huge challenges. As a traditional energy source, fuel oil accounts for 34.5% of the world's energy structure. It is estimated that from 2015 to 2035, the world's demand for fuel oil will grow at an average annual rate of 8% (OPEC 2011). However, the exhaust gas produced after the combustion of fuel is becoming more and more harmful to the human body and the environment. The main pollutants in the exhaust gas are sulfur oxides (SO x ), nitrogen oxides, carbon monoxide, hydrocarbons, and solid particu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/188B01J27/19B01J27/199B01J31/34C10G27/12C08G83/00
CPCB01J27/188B01J27/19B01J27/199B01J31/34C08G83/004C10G27/12C10G2300/202
Inventor 朱林华史载锋戴春燕张小明
Owner HAINAN NORMAL UNIV
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