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Catalyst, preparation method and application of methyl acrylate and formaldehyde for producing methyl acrylate

A technology of methyl acrylate and methyl acetate, which is applied in the preparation of carboxylic acid esters, chemical instruments and methods, and the preparation of organic compounds. It can solve problems such as the need for regeneration, catalyst deactivation, and carbon deposition on the surface of the catalyst. Increased performance, prolonging one-way life, and prolonging the effect of one-way life

Active Publication Date: 2015-09-23
SHANGHAI PUJING CHEM NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The process of producing methyl acrylate from methyl acetate and formaldehyde is an acid-base catalyzed reaction, and the reaction is carried out at high temperature, which easily produces carbon deposits on the surface of the catalyst, deactivating the catalyst and requiring regeneration

Method used

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  • Catalyst, preparation method and application of methyl acrylate and formaldehyde for producing methyl acrylate
  • Catalyst, preparation method and application of methyl acrylate and formaldehyde for producing methyl acrylate
  • Catalyst, preparation method and application of methyl acrylate and formaldehyde for producing methyl acrylate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 1.2g of strontium nitrate, add 90ml of deionized water to prepare an additive impregnation solution, put 100g of silica carrier in the impregnation solution, soak at room temperature for 4 hours, and dry at 120°C for 4 hours to obtain a carrier containing additives .

[0031] Weigh 15g of cesium nitrate (calculated as cesium oxide), add 90ml of deionized water to prepare a cesium nitrate solution, add the carrier containing additives into the cesium nitrate solution, soak at room temperature for 4h, dry at 120°C for 4h, and 400°C Under roasting for 4h, a catalyst containing cesium and strontium was obtained.

Embodiment 2

[0033] Weigh 5.5g of tin dichloride, add 90ml of deionized water to prepare an additive impregnation solution, put 100g of silica carrier in the impregnation solution, soak at room temperature for 4h, and dry at 120°C for 4h to obtain Carrier.

[0034] Weigh 15g of cesium nitrate (calculated as cesium oxide), add 90ml of deionized water to prepare a cesium nitrate solution, add the carrier containing additives into the cesium nitrate solution, soak at room temperature for 4h, dry at 120°C for 4h, and 500°C Under roasting for 4h, a catalyst containing cesium and strontium was obtained.

Embodiment 3

[0036] Weigh 5.5g of tin dichloride, 1.2g of strontium nitrate, and 0.5g of potassium nitrate, add 90ml of deionized water to prepare an auxiliary impregnation solution, put 100g of silica carrier in the impregnation solution, and immerse at room temperature for 4h, Dry at 120° C. for 4 hours to obtain a carrier containing additives.

[0037] Weigh 15g of cesium nitrate (calculated as cesium oxide), add 90ml of deionized water to prepare a cesium nitrate solution, add the carrier containing additives into the cesium nitrate solution, soak at room temperature for 4h, dry at 120°C for 4h, and 500°C Under roasting for 4h, a catalyst containing cesium, strontium, tin and potassium was obtained.

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Abstract

The invention relates to a catalyst for manufacturing methyl acrylate from methyl acetate and formaldehyde as well as a preparation method and application of the catalyst. The catalyst is mainly composed of a carrier, an active component, and an assistant, wherein the active component is caesium oxide; the mass fraction of the caesium oxide to the carrier is 3-20%; the mass fraction of the assistant to the carrier is 0.1-5%. Compared with the prior art, the catalyst provided by the invention is applicable to industrialized production and has the advantages of relatively high activity, long service life and the like.

Description

technical field [0001] The invention relates to a catalyst and a preparation method for producing methyl acrylate from methyl acetate, in particular to a catalyst technology for producing methyl acrylate through a non-petroleum raw material route. Background technique [0002] Methyl acetate is a by-product produced in large quantities in both polyvinyl alcohol and terephthalic acid production processes. Every 1 ton of polyvinyl alcohol is produced as a by-product of more than 1.5 tons of methyl acetate. In industry, methyl acetate is generally hydrolyzed into acetic acid and methanol for recycling. Due to the low efficiency of the hydrolysis process of methyl acetate, the recovery process consumes a lot of energy. Therefore, the price of methyl acetate as a by-product is low. Utilize by-products, develop downstream products of methyl acetate, and use methyl acetate to produce high value-added products, which will have good economic and social benefits. [0003] Acrylic ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/04B01J23/14C07C69/54C07C67/343
Inventor 吴文章贺俊鲁文质计扬
Owner SHANGHAI PUJING CHEM NEW MATERIALS
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