Solid acid catalyst for catalyzing decarboxylation of [gamma]-valerolactone to prepare butene and preparation method and application thereof

A solid acid catalyst, a technology for carboxylating butene, which is applied in the directions of carbon compound catalysts, physical/chemical process catalysts, catalysts, etc., can solve the problems of lack of species, high cost, complicated production process, etc., and achieves a simple preparation method and a large ratio The effect of surface area and low cost of raw materials

Active Publication Date: 2020-05-29
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In order to solve the existing problems such as complex production process, high cost and lack of types of butene catalysts in the decarboxylation of γ-valerolactone, the present invention provides two kinds of Al-SBA which are simple, convenient, low in cost and conducive to mass production -15 catalyst synthesis method

Method used

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  • Solid acid catalyst for catalyzing decarboxylation of [gamma]-valerolactone to prepare butene and preparation method and application thereof
  • Solid acid catalyst for catalyzing decarboxylation of [gamma]-valerolactone to prepare butene and preparation method and application thereof
  • Solid acid catalyst for catalyzing decarboxylation of [gamma]-valerolactone to prepare butene and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Example 1 Impregnation method to prepare solid acid catalyst S(1) for catalyzing the decarboxylation of γ-valerolactone to butene

[0034] 1) Preparation of SBA-15 matrix: use sodium silicate as silicon source to prepare SBA-15 matrix: add 4.0g P123 template agent to 120g H 2 O and 20mL concentrated hydrochloric acid solution, vigorously stirred until P123 was completely dissolved; 10.5g sodium silicate (dissolved in 10.5g H 2 O) solution, slowly drop into the aqueous solution of P123 and hydrochloric acid at one time, and react for 6 hours under stirring at 40°C; transfer the reaction mixture to an autoclave, and perform hydrothermal treatment at 95°C for 20h; the obtained mixture is filtered and washed, and dried at 50°C 12h; finally baked at 550°C for 4h with a heating rate of 1.5°C·min -1 , to prepare the SBA-15 matrix.

[0035]2) Preparation of Al-SBA-15: 0.1100g AlCl was stirred by magnetic force at room temperature 3 Dissolve in 7 mL of absolute ethanol. 1 g ...

Embodiment 2

[0036] Example 2 Impregnation method to prepare solid acid catalyst S(2) for catalyzing the decarboxylation of γ-valerolactone to butene

[0037] According to the method described in Example 1, but with 0.0560g AlCl 3 Instead of 0.1100g AlCl in Example 1 3 , to get S(2) catalyst, the sample is named as 1.12wt.% Al-SBA-15 catalyst, wherein the mass fraction of Al atoms in the matrix SBA-15 is 1.12wt.%.

Embodiment 3

[0038] Example 3 Preparation of solid acid catalyst S(3) by impregnation method for catalyzing the decarboxylation of γ-valerolactone to butene

[0039] According to the method described in Example 1, but with 0.2200g AlCl 3 Instead of 0.1100g AlCl in Example 1 3 , to get S(3) catalyst, the sample named as 4.46wt.% Al-SBA-15 catalyst, wherein the mass fraction of Al atoms in the matrix SBA-15 is 4.46wt.%.

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Abstract

The invention relates to preparation of a solid acid catalyst by taking an SBA-15 mesoporous molecular sieve as a matrix and application of a related catalyst in a reaction process of preparing buteneby decarboxylation of [gamma]-valerolactone, and belongs to the technical field of catalysts. Al is introduced into an SBA-15 molecular sieve skeleton through adoption of an impregnation method or asolid-phase grinding method to form corresponding solid acid sites. The method comprises the following steps: adding [gamma]-valerolactone and 10wt% of a catalyst into a high-pressure kettle, and performing reacting for 4 hours under the conditions that the initial pressure is atmospheric pressure, the temperature is 320 DEG C and the speed is 700r / min, so that the yield of butene is as high as 97%. The catalyst disclosed by the invention has the advantages that the catalyst preparation process is simple, the cost is low, and mass production can be realized; the obtained catalyst has a large specific surface area; and the catalytic reaction conditions are mild, the butene yield is high, and the catalytic stability is good. Therefore, the catalyst provides more ideas and methods for effective development and utilization of biomass energy.

Description

technical field [0001] The invention relates to a catalyst for catalyzing the decarboxylation of γ-valerolactone to butene, in particular to a solid acid catalyst for catalyzing the decarboxylation of γ-valerolactone to butene with simple and low cost and its preparation method and application. The field of renewable clean energy. Background technique [0002] Butene is an extremely important organic chemical raw material, widely used in chemical processing, energy fuels, basic chemical materials and rubber, fiber, plastic, oil modification, etc. At present, crude oil refining is the main production route of butene. However, the continuous progress of science and technology, the depletion of fossil energy and the continuous deterioration of the ecological environment make people gradually realize that the butene production process using fossil energy as raw material is facing a crisis of being eliminated. Therefore, the development of a new, pollution-free butene productio...

Claims

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Application Information

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IPC IPC(8): B01J29/03B01J35/10C07C1/213C07C11/08
CPCB01J29/0308C07C1/213B01J2229/18C07C2529/03B01J35/615B01J35/635B01J35/647C07C11/08
Inventor 单炜军贾秀于海彪崔俊硕熊英王月娇娄振宁
Owner LIAONING UNIVERSITY
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