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Pd(0) Gn-PAMAM mesoporous catalyst in use for hydrogenation reaction of unsaturated hydrocarbon, and preparation method

A hydrogenation reaction, unsaturated technology, applied in the direction of organic compound/hydride/coordination complex catalyst, metal/metal oxide/metal hydroxide catalyst, catalyst carrier, etc., can solve the difficulty of catalyst recovery and reuse, etc. problems, to achieve the effect of convenient recycling and stable catalyst

Inactive Publication Date: 2007-05-09
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although PAMAM has good catalytic performance as a homogeneous catalyst, it is difficult to recover and reuse the catalyst.

Method used

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  • Pd(0) Gn-PAMAM mesoporous catalyst in use for hydrogenation reaction of unsaturated hydrocarbon, and preparation method
  • Pd(0) Gn-PAMAM mesoporous catalyst in use for hydrogenation reaction of unsaturated hydrocarbon, and preparation method
  • Pd(0) Gn-PAMAM mesoporous catalyst in use for hydrogenation reaction of unsaturated hydrocarbon, and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 0.01 g of the catalyst Pd(0)-G1-PAMAM-SBA-15, add it into a 100 ml three-necked flask containing 50 ml of methanol and water, and cool it with circulating water. The mixture was stirred at room temperature for 30 minutes under the condition of feeding hydrogen, then 10 mmol of allyl alcohol was added, and the reaction was started to be timed. Samples were taken at regular intervals for quantitative analysis until the end of the reaction. When the reaction was finished, the TOF value reflecting the performance of the catalyst was 2185, the conversion rate of propylene alcohol in the solution was 100%, and the selectivity to propylene alcohol was 79.0%.

Embodiment 2

[0027] Weigh 0.01 g of catalyst Pd(0)-G2-PAMAM-SBA-15, add it into a 100 ml three-neck flask containing 50 ml of methanol and water, and cool it with circulating water. Reaction process and operating steps are the same as example 1. When the reaction time is 25 minutes, TOF=2266, the conversion rate of propylene alcohol is 100%, and the selectivity to propylene alcohol is 82.0%.

Embodiment 3

[0029] Similarly, the catalyst in Example 1 was replaced with Pd(0)-G3-PAMAM-SBA-15, and other reaction processes and operating steps remained unchanged. When the reaction was finished, TOF=711, the conversion rate of propylene alcohol was 100%, and the selectivity to propylene alcohol was 93.4%.

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Abstract

A mesoporous catalyst Pd (0)-Gn-PAMAM for the hydroreaction of unsaturated hydrocarbon is composed of Pd nanoparticles, mesoporous material and polyamideamine (PAMAM). Its preparing process includes such steps as Michael addition reaction in the mesoporous arteries to synthesize PAMAM, introduce Pd ions, and reducing by sodium bromohydride.

Description

technical field [0001] The invention relates to a heterogeneous catalyst for hydrogenation reaction of unsaturated hydrocarbons, which belongs to the field of catalysts. Background technique [0002] Due to the nano-size effect, nanoparticles have excellent physical and chemical properties. Therefore, nanotechnology has attracted more and more attention. At present, since the nano-preparation method has been perfected day by day, how to apply nano-materials to actual production is a top priority. As an excellent catalyst, precious metal nanoparticles have attracted more and more interest of scientific researchers. However, due to the easy oxidation and agglomeration of nanoparticles during application and storage, which affects their catalytic activity and selectivity, their application is greatly limited. In addition, some catalysts with excellent catalytic performance are often homogeneous catalysts, which usually brings huge waste and pollution to the recovery and utili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/44B01J31/06B01J32/00C07C5/02C07C31/10
Inventor 高秋明姜义军
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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