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Supported ruthenium amorphous alloy catalyst as well as preparation method and application thereof

A technology of amorphous alloys and catalysts, applied in the field of supported ruthenium amorphous alloy catalysts and its preparation, can solve the problems of low utilization rate of loaded components, uneven distribution of active components, large particle size, etc., and achieve separation and purification Low cost, stable selectivity, and high selectivity

Active Publication Date: 2017-11-03
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nickel-based catalyst or ruthenium-containing catalyst involved in the existing biomass hydrogenolysis route is mainly prepared by impregnation method, which has the disadvantages of uneven distribution of active components, large particle size, and low utilization rate of loaded components.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Ru-B / SiO 2 Preparation of Amorphous Alloy Catalyst

[0029] At a stirring rate of 800 rpm, 1.50 g of SiO 2 Add RuCl 3 aqueous solution, and continued to stir for 30 min. Ru and SiO 2 The mass ratio of is 0.1%, and the mass of water is 30 g.

[0030] Add freshly prepared NaBH with 0.02 mol / L NaOH solution as solvent to the above system 4 solution, NaBH 4 The concentration of the solution is 0.2 mol / L, and the molar ratio of B:Ru is 5:1, and the stirring is continued for 10 min.

[0031] Stop stirring, and after standing for 30 min, filter with a 0.45 μm filter membrane, wash the filter cake with water until there is no Cl - And the washing water is neutral;

[0032] The obtained product was vacuum-dried at 70 °C for 12 h before use.

[0033] (2) Catalyst evaluation

[0034] Add 15 g of 30% glycerin aqueous solution into a 100 mL stainless steel autoclave, then add 0.45 g of the catalyst prepared by the above method, close the autoclave, and successively use...

Embodiment 2

[0036] (1) Ru-B / SiO 2 Preparation of Amorphous Alloy Catalyst

[0037] At a stirring rate of 900 rpm, 1.50 g of SiO 2 Add RuCl 3 aqueous solution, and continued to stir for 30 min. Ru and SiO 2 The mass ratio of is 1%, and the mass of water is 40 g.

[0038] Add freshly prepared NaBH with 0.02 mol / L NaOH solution as solvent to the above system 4 solution, NaBH 4 The concentration of the solution was 0.2 mol / L, and the molar ratio of B:Ru was 6:1, and the stirring was continued for 20 min.

[0039] Stop stirring, and after standing for 60 min, filter with a 0.45 μm filter membrane, wash the filter cake with water until there is no Cl - And the washing water is neutral;

[0040] The obtained product was vacuum-dried at 80 °C for 10 h before use.

[0041] (2) Catalyst evaluation

[0042] Add 20 g of 40% glycerol aqueous solution into a 100 mL stainless steel autoclave, then add 0.60 g of the catalyst prepared by the above method, close the autoclave, and successively use ...

Embodiment 3

[0044] (1) Ru-B / SiO 2 Preparation of Amorphous Alloy Catalyst

[0045] Mix 1.50 g of SiO at a stirring rate of 1000 rpm 2 Add RuCl 3 aqueous solution, and continued to stir for 30 min. Ru and SiO 2 The mass ratio of is 2%, and the mass of water is 50 g.

[0046] Add freshly prepared NaBH with 0.02 mol / L NaOH solution as solvent to the above system 4 solution, NaBH 4 The concentration was 0.2 mol / L, and the molar ratio of B:Ru was 7:1, and the stirring was continued for 30 min.

[0047] Stop stirring, and after standing for 30 min, filter with a filter membrane of 0.45 μm or less, and wash the filter cake with water until there is no Cl - And the washing water is neutral;

[0048] The obtained product was vacuum-dried at 100 °C for 16 h for use.

[0049] (2) Catalyst evaluation

[0050] Add 30 g of 50% glycerol aqueous solution into a 100 mL stainless steel autoclave, then add 0.90 g of the catalyst prepared by the above method, close the autoclave, and successively u...

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Abstract

The invention discloses a supported ruthenium amorphous alloy catalyst as well as a preparation method and application thereof. According to the catalyst, fumed silica serves as a carrier, ruthenium serves as an active component, sodium borohydride serves as a reducing agent, and the metal ruthenium and the aid boron are dispersed on SiO2 uniformly and firmly in the form of amorphous alloy Ru-B according to a chemical reduction method; the catalyst prepared according to the preparation method has the amorphous form, has large specific surface, is dispersed uniformly and has small particles. When the catalyst is applied to preparation of dihydric alcohol by glycerinum selective hydrogenation, the process is simple, mild in reaction condition, high in activity on the glycerinum, high and stable in selectivity on the glycol and low in separation and purification cost; due to the price advantage and the renewability of the biomass raw materials, the process is favorable for reducing the production cost of the glycol.

Description

technical field [0001] The invention relates to a supported ruthenium amorphous alloy catalyst and its preparation method and application, belonging to the technical field of biochemical industry. Background technique [0002] With the development of the economy and the deterioration of the environment, the concepts of sustainability and green are becoming more and more popular, while the energy crisis caused by the non-renewability of petrochemical resources and the environmental pollution caused by the use of fossil fuels threaten human survival and health . It is an urgent need to develop clean and sustainable new energy sources, and biomass energy is one of them. [0003] Biodiesel is a recognized renewable alternative to fossil fuels. However, the production process of biodiesel will produce a large amount of glycerol by-product, which seriously affects the economic benefits of the entire biodiesel industry chain. Converting them into chemicals with high added value ...

Claims

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Application Information

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IPC IPC(8): B01J23/46B01J21/08B01J21/02C07C29/60C07C31/20
CPCB01J21/02B01J21/08B01J23/462C07C29/60C07C31/202Y02P20/52
Inventor 刘雷冯尚华董晋湘
Owner TAIYUAN UNIV OF TECH
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