Use of zirconium inorganic salt and zirconium-oxygen inorganic salt as esterification catalyst

A technology of zirconium oxide inorganic salt and zirconium inorganic salt, which is applied in the application field of zirconium inorganic salt and zirconium oxide inorganic salt as an esterification reaction catalyst, achieving the effects of simple recycling, reducing energy consumption, and improving conversion rate

Inactive Publication Date: 2007-02-14
北京清华紫光英力化工技术有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Other inorganic salts such as tin protochloride [Zhao literature, Niu Meiju, solid inorganic chloride catalyzes the synthesis of butyrate, Hunan chemical industry, 29 (1999), 6,36-38] also has certain catalytic action to esterification, but the catalytic action of simple inorganic salt to acrylated reaction has no report yet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh ZrOCl 2 ·8H 2 O catalyst 402mg was placed in a reaction flask, followed by adding 1.30ml of methanol and 1.70ml of acrylic acid, sealed, and stirred at room temperature for reaction. The reaction time is 24 hours. The reaction result is: the yield of methyl acrylate is 83%. The reaction time was 48 hours, and the yield of methyl acrylate was 90%.

Embodiment 2

[0029] In the aqueous phase recovered in Example 1, 406 μl of methanol and 686 μl of acrylic acid were added successively, sealed, and stirred at room temperature for reaction. The reaction time was 48 hours. The reaction result was: the yield of methyl acrylate was 74%.

Embodiment 3

[0031] Weigh ZrOCl 2 ·8H 2 322 mg of O catalyst was placed in a reaction flask, followed by adding 1.42 ml of ethanol and 1.70 ml of methacrylic acid, airtight, stirring and reacting at room temperature, the reaction time was 24 hours, and the yield of ethyl methacrylate was 78%.

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PUM

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Abstract

The present invention relates to application of zirconium inorganic salt and zirconium-oxygen inorganic salt which can be used as catalyst in esterification and ester-interchange reaction, in which the zirconium inorganic salt and zirconium oxygen inorganic salt are Zr(NO3)4, ZrOCl2 and ZrO(NO3)2.

Description

technical field [0001] The invention relates to the application of zirconium inorganic salt and zirconium oxygen inorganic salt as esterification reaction catalyst. Background technique [0002] Acrylate compounds are a series of important organic chemical raw materials and important monomers in the polymer synthesis industry. They are widely used in coatings, adhesives, photosensitive curing agents, plastic modification, thinners, fiber treatment, leather processing, and rubber, etc. many ways. Acrylic acid ester synthesis generally adopts the method of direct esterification of sulfuric acid as catalyst in industry, (describing the method operation process) (referring to, " fine organic chemical raw material and intermediate handbook " the 337-340 page, Xu Kexun, Chemical Industry Press, 1998) . [0003] However, the methods disclosed in these documents have disadvantages such as serious corrosion of equipment, difficulty in controlling polymerization phenomenon, complica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/06C07C67/02C07C67/08C07C69/54
Inventor 孙宏斌华瑞茂尹应武
Owner 北京清华紫光英力化工技术有限责任公司
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