Homogeneous molybdenum base epoxidation catalyst

A catalyst, epoxidation technology, applied in the direction of physical/chemical process catalyst, organic compound/hydride/coordination complex catalyst, organic chemistry, etc., can solve the problem of low selectivity of propylene oxide, cumene hydrogen peroxide Problems such as low conversion rate, to achieve the effect of high activity

Active Publication Date: 2013-12-04
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that there are problems in the prior art that the conversion rate of cumene hydroperoxide is low and the selectivity of propylene oxide is low, and a new homogeneous molybdenum-based epoxidation catalyst is provided

Method used

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  • Homogeneous molybdenum base epoxidation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Get 2.88 grams of commercial grade molybdenum oxide, add 30 grams of isooctanoic acid and 20 grams of cumene, stir at room temperature for 1 day, the molybdenum compound gradually dissolves, and the color of the mixture gradually changes from bright yellow to brown; then add 2.4 grams of hexadecylamine and heat to 160°C, magnetically stirred for 12 hours; then 0.2 g of sodium naphthenate was added and stirred for 0.5 hours to obtain a homogeneous organomolybdenum catalyst MO-1. Among them, in MO-1, the molybdenum content is 3.4% by weight based on molybdenum.

[0019]

Embodiment 2

[0021] Get 2.88 grams of commercial grade molybdenum oxide, add 30 grams of isooctanoic acid and 20 grams of cumene, stir at room temperature for 1 day, the molybdenum compound gradually dissolves, and the color of the mixture gradually changes from bright yellow to brown; then add 0.24 grams of hexadecylamine and heat to 160°C, magnetically stirred for 12 hours; then 0.2 g of sodium naphthenate was added and stirred for 0.5 hours to obtain a homogeneous organomolybdenum catalyst MO-2. Wherein, in MO-2, the molybdenum content is 3.6% by weight based on molybdenum.

[0022]

Embodiment 3

[0024] Take 2.88 grams of commercial grade molybdenum oxide, add 20 grams of isooctanoic acid, 10 grams of hydrochloric acid and 20 grams of cumene, stir at room temperature for 1 day, the molybdenum compound gradually dissolves, and the color of the mixture gradually changes from bright yellow to brown; then add 0.24 grams of sixteen Amine, heated to 170°C, magnetically stirred for 12 hours; then 0.2 g of sodium naphthenate was added and stirred for 0.5 hours to obtain a homogeneous organic molybdenum catalyst MO-3. Wherein, in MO-3, the molybdenum content is 4.5% by weight based on molybdenum.

[0025]

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Abstract

The present invention relates to a homogeneous molybdenum base epoxidation catalyst, wherein problems of low cumene hydroperoxide conversion rate and low propylene oxide selectivity in the prior art are mainly solved with the present invention. The technical scheme comprises that: the homogeneous molybdenum base epoxidation catalyst preparation method comprises: a) dissolving a molybdenum source and an acid substance in a solvent to obtain a mixture I; b) adding an organic amine to the mixture I, heating to a temperature of 120-200 DEG C, and stirring for 1-24 h to obtain a mixture II; and c) adding a basic substance to the mixture II, and stirring for 0.5-12 h at a room temperature to obtain the homogeneous molybdenum base epoxidation catalyst. With the technical scheme, the problems in the prior art are mainly solved with the present invention, and the homogeneous molybdenum base epoxidation catalyst can be used for industrial production of propylene oxide production through cumene hydroperoxide and propylene epoxidation.

Description

technical field [0001] The invention relates to a homogeneous molybdenum-based epoxidation catalyst. Background technique [0002] Propylene oxide is a very important basic organic chemical raw material and the second largest derivative of propylene. The largest use of propylene oxide is for the production of polyether polyols, accounting for about 60% of its total consumption, and further processing into polyurethane, an important intermediate for synthetic plastics and fibers; in recent years, due to the expansion of the downstream market, the environmental The demand for oxypropylene has increased significantly year by year. [0003] The existing production processes of propylene oxide are mainly chlorohydrin method and co-oxidation method (also known as peroxidation method or indirect oxidation method). The advantages of the chlorohydrin method are that the process is short, the process is mature, the operation is flexible, the purity of the raw material propylene is n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/04C07D301/19C07D303/04
CPCY02P20/52
Inventor 王立杨为民高焕新金国杰康陈军丁琳杨洪云黄政
Owner CHINA PETROLEUM & CHEM CORP
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