A kind of supported rhodium liquid metal solution catalyst and its preparation and application

A technology of liquid metal and catalyst, applied in the field of rhodium-loaded liquid metal solution catalyst and its preparation and application, can solve the problems of poor selectivity, poor stability, low reactivity, etc., achieve high selectivity, simple preparation method, high Active and Selective Effects

Active Publication Date: 2020-12-29
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the invention is to provide a kind of high catalytic activity, high selectivity and good stability loaded rhodium liquid metal solution catalyst for the low problem of existing catalyst reactivity, poor selectivity and stability, the invention also provides The preparation method of the catalyst, another object of the present invention is to provide the application of the catalyst in the hydroformylation reaction of propylene, isobutylene and styrene

Method used

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  • A kind of supported rhodium liquid metal solution catalyst and its preparation and application
  • A kind of supported rhodium liquid metal solution catalyst and its preparation and application
  • A kind of supported rhodium liquid metal solution catalyst and its preparation and application

Examples

Experimental program
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Effect test

Embodiment example 1

[0023] First dissolve 6.5mg rhodium acetate (3mg rhodium) in 25ml of n-hexane, then add 1340mg gallium, 410mg indium, 250mg tin (ratio of gallium indium tin is 1:0.31:0.0.19), seal and store at 60°C Heat and stir in an oil bath for 8 hours, wait to cool to room temperature, add 8000 mg of silica gel (ratio of rhodium, gallium indium tin and silica gel is 1:667:2667), stir for 3 hours, then filter, rinse with a large amount of n-hexane, and finally in 40 The catalyst A1 (the mass of Rh accounted for about 0.03% of the total mass) was dried overnight under vacuum condition at °C.

Embodiment example 2

[0025] Dissolve 21.7mg of rhodium acetate (10mg of rhodium) in 25ml of n-hexane, then add 1340mg of gallium, 410mg of indium, and 250mg of tin (the ratio of gallium to indium tin is 1:0.31:0.19), seal it, and put it in an oil bath at 80°C Heat and stir in the pot for 10 hours. After cooling to room temperature, add 8000 mg of silica gel (the ratio of rhodium, gallium indium tin and silica gel is 1:200:800), stir for 4 hours, then filter, wash with a large amount of n-hexane, and finally vacuum at 60 ° C. Dry overnight under conditions to obtain catalyst A2 (the mass of Rh accounts for about 0.1% of the total mass).

Embodiment example 3

[0027] First dissolve 51.3mg rhodium trichloride (trihydrate) (20mg rhodium) in 80ml of toluene, then add 1666mg gallium, 167mg indium, 167mg tin (the ratio of gallium indium tin is 1:0.1:0.1), seal, and Heat and stir in an oil bath at 100°C for 12 hours. After cooling to room temperature, add 8000 mg of silica gel (the ratio of rhodium, gallium indium tin, and silica gel is 1:100:400), stir for 5 hours, then filter, rinse with a large amount of toluene, and finally Dry overnight at 80° C. under vacuum to obtain catalyst A3 (the mass of Rh accounts for about 0.2% of the total mass).

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Abstract

The invention relates to a rhodium-loaded liquid metal solution catalyst as well aspreparation and application thereof. The catalyst is characterized in that a carrier of the catalyst is silicon gel;active ingredients are metal rhodium; liquid metal gallium is used for dissolving the metal rhodium; the weight ratio of the metal rhodium, the liquid metal gallium indium tin and the carrier silicongel is 1:(20 to 680):(80 to 2700), wherein the mass ratio of the gallium to the indium to the tin is 1:(0.1 to 0.5):(0.1 to 0.5). According to a preparation method, a metal rhodium compound is added into the gallium indium tin liquid metal and is reduced by the metal gallium to obtain the liquid metal solution; then, silica gel is added; sufficient stirring is performed; the catalyst is obtained by loading the liquid metal solution onto the silicon gel. The metal liquid loaded solution catalyst can be used in hydroformylation reaction for catalyzing propylene, isobutene and styrene. The preparation of the catalyst is simple; high activity and selectivity are realized; the stability is high; the catalyst can realize the multi-time repeated utilization; basically no metal rhodium is lost; the method is suitable for industrial production.

Description

technical field [0001] The invention relates to a rhodium-supported liquid metal solution catalyst and its preparation and application, in particular to a silica-gel-supported rhodium-dissolved gallium indium tin liquid metal catalyst and a preparation method thereof and a catalyst for propylene, isobutylene, and 2-methallyl A process for the preparation of aldehydes by hydroformylation of alcohol, allyl alcohol and styrene. Background technique [0002] Olefin hydroformylation is a very important industrial process, because its corresponding product, aldehyde, can be widely used as an intermediate in the synthesis of esters, alcohols, carboxylic acids, fatty amines and other fine chemicals. The homogeneous Wilkinson's catalyst is widely used in industry. Although the catalyst has excellent catalyst performance, the separation of the homogeneous catalyst is the main problem faced by the catalyst. At the same time, research on heterogeneous catalysts for hydroformylation rea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/62B01J27/135B01J31/04B01J31/22C07C45/50C07C47/228C07C47/02C07C47/19
CPCB01J23/626B01J27/135B01J31/04B01J31/2234B01J2231/321B01J2531/822C07C45/50C07C47/228C07C47/02C07C47/19
Inventor 黄军孙浩
Owner NANJING TECH UNIV
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