Preparation method of silver nano particle loaded metal organic framework complex catalyst

A metal-organic framework and silver nanoparticle technology, which is applied in the preparation of organic compounds, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc., can solve the difficulty of preparation and separation, and the homogeneous system cannot be realized Catalyst recycling and other issues, achieve significant technical effects, avoid difficult separation, and simple preparation

Inactive Publication Date: 2014-10-29
NANKAI UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

However, it was found in the research that the conditions used to achieve this type of reaction are either high temperature and high pressure, or a homogeneous system that cannot realize the recycling of the catalyst.
Although Professor Zhang Yugen from Singapore reported that a carbene polymer-supported silver nanoparticle catalyst can catalyze this reaction at room temperature and pressure and can be recycled 5 times, but N-heterocyclic carbene is a kind of active compound, so its It is difficult to prepare and separate

Method used

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  • Preparation method of silver nano particle loaded metal organic framework complex catalyst
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  • Preparation method of silver nano particle loaded metal organic framework complex catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A method for preparing a metal-organic framework complex catalyst loaded with silver nanoparticles, which is prepared by an impregnation method, and the steps are as follows:

[0026] 1) Synthesis of metal organic framework complex MIL-101

[0027] Add chromium nitrate nonahydrate and terephthalic acid to distilled water, and then add dropwise HF solution with a mass percentage concentration of 40%. The molar ratio of chromium nitrate nonahydrate, terephthalic acid, distilled water and HF solution is 1:1: 267:1, stirred at room temperature for about 15 min, then placed in an oven at 220°C for 8 h, filtered and washed the obtained solid four times with dimethylformamide (DFM), absolute ethanol and distilled water successively to obtain Light green powder solid metal organic framework complex MIL-101;

[0028] 2) Preparation of metal-organic framework complex catalyst AgMIL-101 loaded with silver nanoparticles

[0029] The metal-organic framework complex MIL-101 was uni...

Embodiment 2-5

[0037]Respectively, the preparation method of the metal-organic framework complex catalyst loaded with silver nanoparticles, the steps are basically the same as in Example 1, the difference is that the organic solvents are respectively methanol, ethanol, dimethylformamide and ethyl acetate, respectively The metal-organic framework complex catalyst AgMIL-101 loaded with silver nanoparticles was prepared. Test results and CO at the time of application 2 Adsorption is similar to Example 1.

Embodiment 6-9

[0039] Respectively, the preparation method of the metal-organic framework complex catalyst loaded with silver nanoparticles, the steps are basically the same as in Example 1, the difference is that the basic compound uses potassium carbonate, sodium hydroxide, potassium tert-butoxide and cesium carbonate respectively , respectively prepared metal-organic framework complex catalyst AgMIL-101 loaded with silver nanoparticles. Test results and CO at the time of application 2 Adsorption is similar to Example 1.

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Abstract

The invention discloses a preparation method of a silver nano particle loaded metal organic framework complex catalyst. The preparation method of the silver nano particle loaded metal organic framework complex catalyst by adopting an impregnation method comprises the following steps: firstly, synthesizing a metal organic framework complex MIL-101; and then, preparing the silver nano particle loaded metal organic framework complex catalyst Ag@MIL-101, wherein the silver nano particle loaded metal organic framework complex catalyst is used for converting CO2 into phenylpropiolic acid via the reaction of CO2 and phenylacetylene under a mild reaction condition. The preparation method of the silver nano particle loaded metal organic framework complex catalyst, which is provided by the invention, has the advantages that the catalyst can adsorb a CO2 molecule so as to improve the solubility of the CO2 molecule in a solvent, thereby improving the reaction velocity; the catalyst is simple to prepare, belongs to a heterogenous catalyst, avoids the difficulty that a homogeneous catalyst is difficult to separate, and has an obvious technical effect.

Description

technical field [0001] The present invention relates to industrial emissions of CO 2 Chemical conversion technology, especially a preparation method of metal-organic framework complex catalyst loaded with silver nanoparticles. Background technique [0002] CO 2 It is one of the main greenhouse gases and one of the most abundant carbon resources on the earth. It has the advantages of large reserves, safety, non-toxicity, and low price. In recent years, with the acceleration of the industrialization process of human society, industrial CO 2 The dramatic increase in emissions directly leads to global warming and climate anomalies. Therefore, CO 2 The immobilization, activation and chemical conversion of organic matter has important practical significance for the future of human beings. In recent years, researchers have found that through C-H activation, CO 2 Can react with terminal alkynes to form alkynoic acids. Because alkynoic acids can be used as synthetic intermedia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C07C57/42C07C51/15
Inventor 杨光明刘晓焕马建功师唯程鹏
Owner NANKAI UNIV
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