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Catalyst for synthesizing 1,5-pentanediol and preparation method of catalyst

A catalyst, pentanediol technology, applied in the field of biomass, can solve the problems of unsuitability for large-scale industrial production, cumbersome process, low selectivity and the like

Inactive Publication Date: 2019-08-09
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a catalyst for synthesizing 1,5-pentanediol and its preparation method, which solves the problems of low selectivity, cumbersome process and unsuitability for large-scale industrial production of the existing method for preparing 1,5-pentanediol production technical issues

Method used

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  • Catalyst for synthesizing 1,5-pentanediol and preparation method of catalyst
  • Catalyst for synthesizing 1,5-pentanediol and preparation method of catalyst
  • Catalyst for synthesizing 1,5-pentanediol and preparation method of catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Weigh 3.3826g of tetraethyl silicate, 2.0106g of ammonium metatungstate and 5.1273g of citric acid in 25mL of ultrapure water, stir at 40°C until gelatinous, and place in an oven at 110°C for drying Moisture, after drying, place in a tube furnace and roast at 400°C for 2h under nitrogen atmosphere, cool to room temperature and place in a muffle furnace for 4h at 550°C to obtain 0.5WO 3 -SiO 2 . Weigh the chloroplatinic acid solution according to a certain metering ratio and immerse it in the prepared 0.5WO 3 -SiO 2 After standing for 4 hours, stir and dry the water at 60°C. After drying, place it in a muffle furnace and bake at 400°C for 2 hours to obtain 5%wtPt / 0.5WO 3 -SiO 2 .

Embodiment 2

[0024] Weigh 3.3826g of tetraethyl silicate, 3.2817g of ammonium metatungstate and 6.2276g of citric acid in 25mL of ultrapure water, and the other conditions are the same as in Example 1 to prepare 5%wtPt / 0.8WO 3 -SiO 2 .

Embodiment 3

[0026] Weigh respectively the tetraethyl silicate of 3.3826g, the ammonium metatungstate of 4g and the citric acid of 6.8521g in the ultrapure water of 25mL, other conditions are identical with embodiment 1, prepare 5%wtPt / 1.0WO 3 -SiO 2 .

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Abstract

The invention relates to the technical field of biomass, in particular to a catalyst for synthesizing 1,5-pentanediol and a preparation method of the catalyst. The structural formula of the catalyst for synthesizing the 1,5-pentanediol is A / WO3-SiO2, and the A element is one of the Pt element, the Rh element and the Ru element. The invention further provides a preparation method of the catalyst for synthesizing the 1,5-pentanediol. The method comprises the steps that ammonium metatungstate, tetraethyl orthosilicate and citric acid are mixed and stirred to a gel shape, and through first-time calcination, second-time calcination, dipping and third-time calcination, the catalyst for synthesizing the 1,5-pentanediol is obtained. According to the catalyst for synthesizing the 1,5-pentanediol and the preparation method of the catalyst, the technical problems are solved that for an existing method for preparing the 1,5-pentanediol, the selectivity is low, the process is complex, and the method is not suitable for large-batch industrial production.

Description

technical field [0001] The invention relates to the technical field of biomass, in particular to a catalyst for synthesizing 1,5-pentanediol and a preparation method thereof. Background technique [0002] One of the early drivers of chemical research was the conversion of biomass into fuels and other high value-added chemicals. Biomass is mainly carbohydrates formed by photosynthesis of plants to fix solar energy. It has the advantages of wide distribution, large reserves, environmental friendliness, especially zero emission of greenhouse gases, and is currently one of the most potential new energy sources that can replace fossil energy sources. . [0003] Tetrahydrofurfuryl alcohol, a biomass derivative, is an important platform molecule, which can be prepared from hemicellulose, and 1,5-pentanediol can be prepared through selective hydrogenation and ring opening. 1,5-pentanediol is a colorless viscous liquid with a bitter taste, miscible with water, low-molecular alcohol...

Claims

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Application Information

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IPC IPC(8): B01J23/652B01J37/08B01J37/02C07C29/00C07C31/20
CPCB01J23/6527B01J37/0201B01J37/082C07C29/00C07C31/20
Inventor 王铁军匡碧锋仇松柏张浅秦延林马宇飞
Owner GUANGDONG UNIV OF TECH
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