A kind of solid acid catalyst and its application in catalytic conversion of glucose to prepare methyl levulinate

A technology of solid acid catalyst and methyl levulinate, which is applied in the direction of carboxylic acid ester preparation, organic compound preparation, physical/chemical process catalyst, etc., to achieve the effect of cycle stability, simple preparation method and good catalytic activity

Inactive Publication Date: 2017-01-11
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the shortcomings and deficiencies in the existing technology for preparing methyl levulinate, and propose a solid acid catalyst that can be used to catalyze the conversion of glucose to prepare methyl levulinate. The catalyst preparation method is simple, High catalytic activity, high selectivity, good stability, easy separation and recovery, environmentally friendly and pollution-free

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Using the ion exchange method, according to the loading of aluminum ions as 20wt.%, 1.2355g of aluminum chloride was added to 50mL of deionized water, stirred ultrasonically for 30 minutes, then added 1g of sodium montmorillonite, and stirred at 60°C for 12 hours. Stand still for 12 hours, filter with suction, wash with deionized water until there is no chloride ion, dry at 120°C overnight, and grind to prepare a solid acid catalyst.

Embodiment 2

[0016] Using the ion exchange method, according to the loading of aluminum ions as 5wt.%, 0.2601g of aluminum chloride was added to 50mL of deionized water, ultrasonically stirred for 30 minutes, then 1g of sodium montmorillonite was added, and stirred at 60°C for 12 hours. Stand still for 12 hours, filter with suction, wash with deionized water until there is no chloride ion, dry at 120°C overnight, and grind to prepare a solid acid catalyst.

Embodiment 3

[0018] Using the ion exchange method, according to the loading of aluminum ions as 10wt.%, 0.5491g of aluminum chloride was added to 50mL of deionized water, ultrasonically stirred for 30 minutes, then 1g of sodium montmorillonite was added, and stirred at 60°C for 12 hours. Stand still for 12 hours, filter with suction, wash with deionized water until there is no chloride ion, dry at 120°C overnight, and grind to prepare a solid acid catalyst.

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Abstract

The invention discloses a solid acid catalyst and an application thereof in catalytically converting glucose to prepare methyl levulinate. The carrier of the catalyst is sodium-based montmorillonite, the active ingredient of which is any one of In<3+>, Cr<3+>, Cu<2+>, Sn<4+> and Al<3+>. The loading capacity of the active ingredient is 5-40wt.%. The catalyst is prepared by using an ion exchange method, the preparation method is simple, and the solid acid catalyst is good in stability, environment-friendly, free of pollution and less in corrosion on equipment, and the catalyst for catalytically converting glucose to prepare methyl levulinate is good in catalytic activity, high in selectivity, easy to be separated and recovered from reactants, recyclable and good in cycling stability, and can be used for fully catalytically converting glucose. The highest yield of methyl levulinate can reach over 60%.

Description

technical field [0001] The invention belongs to the technical field of catalysts, in particular to a solid acid catalyst for catalytic conversion of glucose to prepare methyl levulinate. Background technique [0002] With the decrease of fossil fuel resources and the increasingly prominent ecological environment problems, the development and utilization of renewable and environmentally friendly biomass resources to replace fossil energy has become a focus of domestic and foreign researchers. Many chemical products can be prepared from biomass resources, among which methyl levulinate is a very important platform compound. [0003] Methyl levulinate, also known as methyl 4-pentanone, is a colorless liquid, easily soluble in most organic solvents such as ethanol, methanol, ether, and chloroform, with a density of 1.051 and a boiling point of 193-195°C. The molecular formula of methyl levulinate contains an ester group, a carbonyl group and two α-H, so it has high reactivity an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/16B01J23/08B01J23/26B01J23/72B01J23/14C07C69/716C07C67/08C07C67/00
CPCY02P20/582
Inventor 董文生刘杰王雪倩杨高源李浩刘春玲
Owner SHAANXI NORMAL UNIV
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