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Metal organic skeleton structure material load platinum catalyst, as well as preparation method and application thereof

A metal-organic framework and structural material technology, applied in the preparation of organic compounds, organic compound/hydride/coordination complex catalysts, organic chemistry, etc., to achieve good activity and selectivity, environmental friendliness, high efficiency and stability

Inactive Publication Date: 2013-04-03
EAST CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has not been reported that MIL-101 is used as a carrier to support Pt catalysts, and it is used in the asymmetric catalytic hydrogenation of α-keto esters and the catalytic hydrogenation of benzaldehyde, nitrobenzene and their derivatives.

Method used

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  • Metal organic skeleton structure material load platinum catalyst, as well as preparation method and application thereof
  • Metal organic skeleton structure material load platinum catalyst, as well as preparation method and application thereof
  • Metal organic skeleton structure material load platinum catalyst, as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Cr(NO 3 ) 3 9H 2 O, HF, terephthalic acid and deionized water were reacted in a hydrothermal reactor at a constant temperature of 493K for 8 hours at a molar ratio of 1:1:1:265; naturally cooled to room temperature and then filtered to obtain a green solid powder; Then the solid powder is washed with organic solvent and small molecule alcohol respectively, filtered while hot after each washing, and finally dried in a constant temperature drying oven to obtain MIL-101 powder which is the metal organic framework material MIL-101. 0.5mL H 2 PtCl 6 Ethanol solution (1g chloroplatinic acid hexahydrate dissolved in ethanol to prepare 25mL solution) was added dropwise to 1.500g of the above-prepared MIL-101 powder, then 10-12mL of ethanol was added, stirring and impregnating at room temperature for 4-6 hours, the stirring speed was about 600 rev / min. After impregnation, evaporate the solvent to dryness and dry at 353-393K. Then add appropriate amount of sodium formate an...

Embodiment 2

[0029] In this embodiment, the Pt / MIL-101 catalyst with a Pt loading of 5wt.% is prepared according to the preferred conditions:

[0030] The preparation method of the metal-organic framework material MIL-101 is basically the same as that of Example 1. 2.0mL H 2 PtCl 6 Ethanol solution (1g of chloroplatinic acid hexahydrate dissolved in ethanol to prepare 25mL of chloroplatinic acid ethanol solution) was added dropwise to 573.4mg of MIL-101 powder, and then 5-8mL of ethanol was added, stirring and impregnating at room temperature for 4-6 hours, and the stirring speed was about at 600 rpm. After impregnation, evaporate the solvent to dryness and dry at 353-393K. Then add appropriate amount of sodium formate and deionized water according to the molar ratio of platinum and sodium formate as 1:10, reflux and reduce at 368K for 2 hours, wash with a large amount of deionized water after cooling to remove chloride ions, and then dry at 353-393K to obtain a loading capacity of 5wt ...

Embodiment 3

[0035] The preparation method of the metal-organic framework material MIL-101 is basically the same as that of Example 1. 3.0mL H 2 PtCl 6 Ethanol solution (1g chloroplatinic acid hexahydrate dissolved in ethanol to prepare 25mL chloroplatinic acid ethanol solution) was added dropwise to 407mg MIL-101 powder, then 4-7mL ethanol was added, stirring and impregnating at room temperature for 4-6 hours, the stirring speed was about 600 rpm. After impregnation, evaporate the solvent to dryness and dry at 353-393K. Then add appropriate amount of sodium formate and deionized water according to the molar ratio of platinum and sodium formate as 1:10, reflux and reduce at 368K for 2 hours, wash with a large amount of deionized water after cooling to remove chloride ions, and dry at 353-393K to obtain a loading capacity of 10wt. % Pt / MIL-101 catalyst.

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Abstract

The invention discloses a metal organic skeleton structure material load platinum catalyst. The metal organic skeleton structure material load platinum catalyst comprises a carrier and an active component loaded on the carrier, wherein the carrier is a metal organic skeleton structure material MIL-101, and the active component is platinum. The invention also discloses a preparation method of the metal organic skeleton structure material load platinum catalyst and a catalytic hydrogenation application thereof. The catalyst provided by the invention has a higher specific surface area and a larger porthole structure, the catalyst is suitable for application in a catalytic hydrogenation reaction, the catalyst is environmentally-friendly, the reaction conditions are gentle, and the catalyst is high in efficiency and good in stability.

Description

technical field [0001] The invention relates to the technical field of metal nanoparticle catalysts, in particular to a metal-organic framework material-supported platinum catalyst, a preparation method and its application in heterogeneous catalytic hydrogenation. Background technique [0002] The asymmetric hydrogenation reaction of latent chiral carbonyl compounds can produce chiral alcohols, and functionalized alcohols are important raw materials for the synthesis of fine chemicals such as medicines, pesticides, and spices. The physical and chemical properties of the two enantiomers (R)- and (S)-isomers in chiral drug molecules are similar, but there are obvious differences in drug activity, metabolic process and toxicity in the human body, even on the contrary. Therefore, the research on the synthesis of monochiral compounds has become a hot spot in the field of chemical research. [0003] Three methods are commonly used to obtain enantiopure compounds with a single co...

Claims

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Application Information

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IPC IPC(8): B01J31/22C07C67/31C07C69/675C07C69/732C07C29/141C07C33/22C07C33/46C07C43/23C07C41/26C07C209/36C07C211/46C07C211/47C07C211/52C07C217/84C07C213/02
Inventor 李晓红潘会严关业军吴鹏
Owner EAST CHINA NORMAL UNIVERSITY
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