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A kind of preparation method and application of epoxidation reaction catalyst

An epoxidation reaction and catalyst technology, applied in catalyst activation/preparation, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve problems such as complex products, achieve environmental friendliness, improve stability, and reduce raw material costs.

Active Publication Date: 2020-08-25
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Li Chunyin etc. take tungsten heteropoly acid as catalyst and peracetic acid as catalyst, its selectivity can reach 95%, but its product is complex

Method used

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  • A kind of preparation method and application of epoxidation reaction catalyst
  • A kind of preparation method and application of epoxidation reaction catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Press Al 2 o 3 :P 2 o 5 :SiO2 2 :TEAOH:H 2 O mol ratio is the ratio of 1:1:0.6:2:80, and the corresponding reaction raw material of taking above-mentioned substance is pseudo-boehmite, orthophosphoric acid, silica sol, tetraethylammonium hydroxide, deionized water; Pseudoboehmite was dissolved in deionized water and stirred until uniform, then orthophosphoric acid and silica sol were added dropwise in sequence, after thorough stirring, tetraethylammonium hydroxide was added as a template agent, the pH was adjusted to 8.3, and the initial gel mixture was obtained by stirring ;

[0027] (2) Put the initial gel mixture in step (1) into the crystallization kettle of polytetrafluoroethylene in the inner village, and after aging for 24 hours, crystallize at a crystallization temperature of 180°C for 120 hours;

[0028] (3) After the crystallization is completed, filter, wash with deionized water, wash with ethanol, and dry at 110°C for 5 hours, then raise the temper...

Embodiment 2

[0032] (1) Press Al 2 o 3 :P 2 o 5 :SiO2 2 :TEAOH:H 2 O mol ratio is the ratio of 1:1:0.2:3:80, and the corresponding reaction raw material of taking above-mentioned substance is pseudo-boehmite, orthophosphoric acid, silica sol, tetraethylammonium hydroxide, deionized water; Pseudoboehmite was dissolved in deionized water and stirred until uniform, then orthophosphoric acid and silica sol were added dropwise in sequence, after thorough stirring, tetraethylammonium hydroxide was added as a template agent, the pH was adjusted to 5.5, and the initial gel mixture was obtained by stirring ;

[0033] (2) Put the initial gel mixture in step (1) into the crystallization kettle of polytetrafluoroethylene in the inner village, and after aging for 3 hours, crystallize at the crystallization temperature of 210°C for 60 hours;

[0034] (3) After the crystallization is completed, filter, wash with deionized water, wash with ethanol, and dry at 110°C for 5 hours, raise the temperature...

Embodiment 3

[0038] (1) Press Al 2 o 3 :P 2 o 5 :SiO2 2 :TEAOH:H 2 O mol ratio is the ratio of 1:1:0.8:1:80, and the corresponding reaction raw material of taking above-mentioned substance is pseudo-boehmite, orthophosphoric acid, silica sol, tetraethylammonium hydroxide, deionized water; Pseudo-boehmite was dissolved in deionized water and stirred until uniform, then orthophosphoric acid and silica sol were added dropwise in sequence, after thorough stirring, tetraethylammonium hydroxide was added as a template agent, the pH was adjusted to 10, and the initial gel mixture was obtained by stirring ;

[0039] (2) Put the initial gel mixture in step (1) into the crystallization kettle of polytetrafluoroethylene in the inner village, and after aging for 36 hours, crystallize at the crystallization temperature of 200°C for 18 hours;

[0040] (3) After the crystallization is completed, filter, wash with deionized water, wash with ethanol, and dry at 110°C for 5 hours, then raise the tempe...

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Abstract

The invention discloses a preparation method and application of an epoxidation catalyst. The preparation method of the epoxidation catalyst comprises the following steps: mixing SAPO-34 molecular sieves prepared by a hydrothermal synthesis method with a mixed reagent of Co(CH3COO)2.4H2O and Mn(CH3COO)2.4H2O, adding deionized water, carrying out ultrasonic treatment, filtering and drying to obtaina CoMn / SAPO-34 molecular sieve catalyst; the prepared catalyst is applied to turpentine epoxidation to obtain epoxypinane with high yield; the method is lower in raw material cost, mild in conditionsand low in equipment requirements, and the prepared catalyst is used in the turpentine epoxidation, so that epoxypinane can be obtained by high conversion ratio and high selectivity.

Description

technical field [0001] The invention relates to a preparation method of a catalyst for epoxidation reaction of turpentine, which belongs to the field of chemical industry. Background technique [0002] my country is a large storage country for turpentine oil, and its output ranks first in the world; the main components of turpentine oil are α-pinene and β-pinene, both of which are a pair of isomers, and a valuable Fragrance intermediate--epoxy pinane. Epoxypinane is an important intermediate to promote the deep development and processing of turpentine, and can be used to synthesize carvone, carveol, dihydroparsley, pinanol hydrate and the isomer product borneolenal, and its isomer product dragon Brain alkenal is also an important intermediate in the synthesis of sandalwood series. [0003] At present, most researches on epoxidation of turpentine focus on the selection of catalysts and oxidants. Existing turpentine epoxidation catalysts have some deficiencies more or less, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/85B01J37/30B01J37/34C07D301/06C07D303/04C01B37/08C01B39/54
Inventor 蒋丽红陈廷辉王亚明郑燕娥贾庆明陕邵云陈君祝冉索宇丁雨晴
Owner KUNMING UNIV OF SCI & TECH
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