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Al-Mg catalyst and catalytic synthesis process of alkoxyl carboxylate ether

A technology of catalyst and alkyl carboxylate, which is applied in the direction of chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of complex catalyst preparation process and increased cost, and achieve simple and low-cost preparation process. The effect of manufacturing costs

Inactive Publication Date: 2005-12-14
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This will complicate the catalyst preparation process and increase the cost on the one hand, and on the other hand will introduce difficult-to-separate organic impurities in the final product of double-capped alkoxylated alkyl carboxylate ether

Method used

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  • Al-Mg catalyst and catalytic synthesis process of alkoxyl carboxylate ether
  • Al-Mg catalyst and catalytic synthesis process of alkoxyl carboxylate ether
  • Al-Mg catalyst and catalytic synthesis process of alkoxyl carboxylate ether

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1 Preparation of Aluminum-Magnesium Inorganic Composite Catalyst 1

[0018] Mix and grind 0.01mol aluminum nitrate, 0.005mol magnesium phosphate and 0.1mol magnesium oxide, add 1000ml deionized water to fully disperse, add 0.1mol sodium hydroxide and 0.01mol sodium carbonate under stirring, raise the temperature to 65°C and continue stirring for 24 hours. After filtering, dry in an oven above 120°C until no more weight loss, and set aside. The catalytic activity of the obtained aluminum-magnesium inorganic composite catalyst was 1.72gEO / gCat / min.

Embodiment 2

[0019] Example 2 Preparation of Aluminum-Magnesium Inorganic Composite Catalyst 2

[0020] Mix and grind 0.01mol aluminum carbonate, 0.1mol magnesium oxide and 0.18mol alumina, add 1000ml deionized water to fully disperse, add 0.09mol sodium hydroxide and 0.01mol sodium carbonate while stirring, raise the temperature to 50°C and continue stirring for 48 hours. After filtering, dry in an oven above 120°C until no more weight loss, and set aside.

Embodiment 3

[0021] Example 3 Preparation of Aluminum-Magnesium Inorganic Composite Catalyst 3

[0022] Mix and grind 0.01mol aluminum carbonate, 0.01mol magnesium chloride, 0.2mol magnesium oxide and 0.05mol aluminum oxide, add 1000ml deionized water to fully disperse, add 0.08mol sodium hydroxide and 0.015mol sodium carbonate under stirring, heat up to 55°C and continue Stir for 48 hours. After filtering, dry in an oven above 120°C until no more weight loss, and set aside.

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Abstract

The present invention belongs to the field of catalyst preparing and organic compound synthesizing technology. The present invention provides one kind one Al-Mg catalyst for the embedded alkoxylation reaction between materials alkyl carboxylate and alkylene oxide, and the catalyst catalyzed one-step process of synthesizing diblocked alkoxyl carboxylate ether. The catalyst is inorganic metal compound and has simple preparing process and low cost. The catalyzing mechanism is double active point catalysis, and through double point embedding, all ester radical C-O bonds of the alkyl carboxylate are embedded into polyalkoxyl radical to obtain polyalkoxyl ester ether blocked with acyl and alkyl simultaneously and final product with high end blocking rate and high purity.

Description

technical field [0001] An aluminum-magnesium catalyst and a method for catalyzing and synthesizing alkoxy carboxylate ethers with the catalyst belong to the technical field of catalyst preparation and organic compound synthesis. Specifically, it is an aluminum-magnesium inorganic composite catalyst and a method for using it to catalyze a one-step embedded synthesis of double-terminated alkoxylated carboxylic acid alkyl ester ether. Background technique [0002] At present, most of the synthesis of double-capped alkoxylated alkyl carboxylate ethers adopts a two-step process, that is, adding carboxylic acid to alkylene oxide, and then capping through etherification reaction. This is because the alkoxylation reaction using alkylene oxide as a reagent can only be carried out on raw materials containing active hydrogen (such as alcohols, phenols, acids, amines, etc.), and because the alkyl carboxylate structure does not contain active hydrogen , so the alkoxylation reaction cann...

Claims

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Application Information

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IPC IPC(8): B01J21/10
Inventor 方云夏咏梅
Owner JIANGNAN UNIV
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