Catalyst with hydrogen storage performance, preparation method and application thereof

A catalyst and performance technology, which is applied in the field of catalysts with hydrogen storage performance and its preparation, can solve problems such as easy side reactions and complex reactions, and achieve the effect of low requirements for reaction equipment

Active Publication Date: 2022-07-08
TIANJIN CHANGLU CHEM NEW MATERIAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current catalysts in the gas phase method usually have complex reactions and are prone to side reactions.

Method used

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  • Catalyst with hydrogen storage performance, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: the preparation method of the catalyst with hydrogen storage performance, including the following steps: first, the metal hydrogen storage material LaNi 5 Mechanically grind into 200-600 mesh alloy powder, and then mix the metal boride Co-B and metal hydrogen storage material powder at a ratio of 5:1. After mixing, the sample is placed in a mechanical ball mill, and the ball milling time is set to 3-48h. The ball milling speed is 200 -600r / min, the ratio of ball to material is 6:1; after the ball milling, the metal with catalytic activity is attached to the surface of the hydrogen storage alloy in an amorphous form, which is marked as catalyst La-Co5.

[0019] Among them, the preparation method of Co-B is: NaBH 4 Prepared as 0.01-10 mol / L solution, soluble metal salt Co(NO 3 ) 2 Dissolve in deionized water to prepare a solution of 0.05-5mol / L, at room temperature, under magnetic stirring, NaBH 4 It is slowly dropped into the soluble metal salt solution...

Embodiment 2

[0020] Example 2, the only difference between Example 2 and Example 1 is that the metal boride Co-B and the metal hydrogen storage material powder are labeled as catalyst La-Co10 at a ratio of 10:1.

Embodiment 3

[0021] Example 3: The difference between Example 3 and Example 1 is only that the metal boride Co-B and the metal hydrogen storage material powder are 8:1, marked as catalyst La-Co8.

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Abstract

The invention belongs to the field of catalysts, and in particular relates to a catalyst with hydrogen storage performance and a preparation method and application thereof. The catalyst with hydrogen storage performance includes the following components: a metal hydrogen storage material and a metal boride; the mass ratio of the metal hydrogen storage material to the metal boride is 10-5:1. The catalyst of the present application and gaseous H 2 Reversible reactions occur to form metal solid solutions and metal hydrides. When the hydrogen molecule contacts the surface of the alloy, it is first adsorbed on the surface of the alloy molecule, and then the H-H bond dissociates to become hydrogen in the atomic state. The hydrogen in the atomic state reduces the hexafluoroacetone to hexafluoroisopropanol under the action of the hydrogenation catalyst. . The catalyst of the invention can be reacted under mild conditions, and has low requirements for reaction equipment; the catalyst of the invention has high catalytic activity and high selectivity, and almost no by-products are generated.

Description

technical field [0001] The invention belongs to the field of catalysts, and in particular relates to a catalyst with hydrogen storage performance and a preparation method and application thereof. Background technique [0002] Hexafluoroisopropanol (CF 3 CHOHCF 3 , referred to as HFIP) is an important fluorine-containing intermediate, which can be used to prepare high-end fluorine-containing fine chemicals such as anesthetics and surfactants. Due to its strong polarity, HFIP is miscible with water and many organic reagents, heat-resistant and allows the passage of ultraviolet light, these properties make it an ideal solvent for many polymer systems, including polyamide, polyester, polyacrylonitrile, polyamide Universal solvent for polymer systems of acetal and hydrolyzed polyvinyl esters. [0003] The synthesis method of hexafluoroisopropanol is mainly a hydrogenation reduction method using hexafluoroacetone as a raw material. According to the different reducing agents, it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/83B01J37/04C07C29/145C07C31/38
CPCB01J23/83B01J37/04B01J37/0036C07C29/145C07C31/38Y02P20/584
Inventor 姚素梅陈爽
Owner TIANJIN CHANGLU CHEM NEW MATERIAL CO LTD
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