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Preparation method of catalyst used for producing camphene

A technology of catalyst and amphene, which is applied in the field of preparation of catalysts for amphene production, can solve the problems of large dosage and low catalytic efficiency, and achieve the effects of high catalytic activity, high catalytic efficiency and shortened reaction time

Inactive Publication Date: 2015-11-18
广西梧州通轩林产化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a preparation method of a catalyst for camphene production, which can solve the problems of large consumption and low catalytic efficiency of existing titanium-based catalysts

Method used

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  • Preparation method of catalyst used for producing camphene

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The preparation method of this camphene production catalyst comprises the following steps:

[0018] A. Under stirring conditions, put 0.5kg of metatitanic acid, 0.1kg of metasilicate and 2.4kg of 40% sodium hydroxide solution into the reactor, first stir at room temperature for 2 hours, and then heat up to 120°C Continue stirring for 10 hours, filter, and collect the first precipitate;

[0019] B. Wash the first precipitate obtained in step A with water until the pH value of the washing solution of the first precipitate is 7.3;

[0020] C, adding 1kg concentration to the first precipitate after the B step treatment is 30% acetic acid solution, carry out acidification reaction for 6 hours, filter, and collect to obtain the second precipitate;

[0021] D. Washing the second precipitate obtained in step C with water until the pH value of the washing solution of the second precipitate is 3.5;

[0022] E. Add 0.1kg of alumina, 0.08kg of zirconia and 0.2kg of zinc stearate ...

Embodiment 2

[0025] The preparation method of this camphene production catalyst comprises the following steps:

[0026] A. Under stirring conditions, put 0.6kg of metatitanic acid, 0.6kg of metasilicate and 3.2kg of 40% sodium hydroxide solution into the reactor, stir at room temperature for 1 hour, and then heat up to 125°C Continue stirring for 11 hours, filter, and collect the first precipitate;

[0027] B. Wash the first precipitate obtained in step A with water until the pH value of the washing solution of the first precipitate is 7.6;

[0028] C, adding 1.3kg concentration to the first precipitate after the B step treatment is 30% acetic acid solution, carry out acidification reaction for 7 hours, filter, and collect to obtain the second precipitate;

[0029] D. Washing the second precipitate obtained in step C with water until the pH value of the washing solution of the second precipitate is 3.0;

[0030] E. Add 0.2kg of alumina, 0.06kg of zirconia and 0.3kg of zinc stearate into ...

Embodiment 3

[0033] The preparation method of this camphene production catalyst comprises the following steps:

[0034] A. Under stirring conditions, put 0.7kg of metatitanic acid, 0.3kg of metasilicate and 4.0kg of 40% sodium hydroxide solution into the reactor, first stir at room temperature for 3 hours, and then heat up to 130°C Continue stirring for 12 hours, filter, and collect the first precipitate;

[0035] B. Washing the first precipitate obtained in step A with water until the pH value of the washing solution of the first precipitate is 8.0;

[0036] C, adding 1.6kg concentration to the first precipitate after the B step treatment is 30% acetic acid solution, carry out acidification reaction for 8 hours, filter, and collect to obtain the second precipitate;

[0037] D. Washing the second precipitate obtained in step C with water until the pH value of the washing solution of the second precipitate is 2.5;

[0038] E. Add 0.3kg of alumina, 0.05kg of zirconia and 0.4kg of magnesium...

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Abstract

The invention discloses a preparation method of a catalyst used for producing camphene, belonging to the technical field of camphene preparation. The preparation method comprises the following steps: putting metatitanic acid, metasilicic acid and a sodium hydroxide solution with concentration of 40% in a reactor, firstly stirring the materials at room temperature, then heating the materials and continuously stirring the materials, filtering the mixture and collecting a first precipitate; washing the first precipitate with water, then subjecting the first precipitate and an acetic acid solution with concentration of 30% to acidification reaction, filtering the reactant and collecting a second precipitate; washing the second precipitate with water, then stirring the second precipitate, alumina, zirconia and zinc stearate uniformly, filtering the mixture, carrying out centrifugal separation, then adding a titanyl sulfate water solution, mixing the materials and calcining the mixture, thus preparing the catalyst. Relative to the titanium-based catalysts sold on the market at present, the titanium-based catalyst prepared by the preparation method has the advantages of lower consumption and higher catalytic activity.

Description

technical field [0001] The invention belongs to the technical field of amphene preparation, in particular to a method for preparing a catalyst for amphene production. Background technique [0002] Camphene, a bicyclic monoterpene compound, is a component of various natural volatile oils such as turpentine. It is mainly used as a raw material for organic synthesis, and can be used to synthesize camphor, spices, pesticides, isobutyl acetate thiocyanate, and isobutyl acetate Esters, toxaphene, etc. [0003] Camphene can be obtained by isomerization of α-pinene. In the process of isomerizing α-pinene to camphene, metatitanic acid is usually used as a catalyst. However, most of the metatitanic acid catalysts currently on the market have shortcomings such as large dosage and low catalytic efficiency. Contents of the invention [0004] The technical problem solved by the invention is to provide a preparation method of a catalyst for camphene production, which can solve the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/06
Inventor 关炽昌刘涛
Owner 广西梧州通轩林产化学有限公司
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