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Catalyst for preparing methyl acrylate from methyl acetate and formaldehyde and application of catalyst

A technology of methyl acrylate and methyl acetate, which is applied in the direction of carboxylate preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problem of high reaction temperature, fast deactivation, Cs Catalyst requirements are high, to achieve the effect of high yield

Pending Publication Date: 2020-01-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Chinese patent [CN102941113A] reports a condensation catalyst with Cs as the main active center, adding at least one of Zr, B, Ce nitrates or oxides, using methylal as a raw material, and the yield of methyl acrylate is 15%. ~30%, but due to high temperature gas phase condensation, the stability of the catalyst and the loss of the main active center Cs are not given
At the same time, because the high-temperature gas-phase condensation process has high requirements on the Cs catalyst, the existing report results use the high-temperature gas-phase condensation form, the reaction temperature is high, and the deactivation is fast. Usually, it is necessary to consider the reaction-regeneration periodic switching system to ensure that the reaction can continue.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] 1. Preparation of impregnation solution

[0072] Weigh cesium acetate C 2 h 3 CaO 2 14.4 g, prepared into 100 ml of a homogeneous solution, left to stand overnight for use.

[0073] 2. Preparation of carrier

[0074] Get 200.0 grams of pseudo-boehmite, 3.0 grams of pore-forming agent methylcellulose, slowly add 180 grams of an aqueous solution containing 30% nitric acid in terms of weight percentage, and stir evenly, then add 5 grams of PEG2000, and knead for 40 Minutes later, extruded and dried at 100° C. for 18 hours, and calcined at 800° C. for 5 hours to obtain a cylindrical carrier with a diameter of 3 mm and a length of 5 mm.

[0075] 3. Catalyst preparation

[0076] Take 90 grams of the carrier, add the prepared impregnation solution, put the impregnation system in a water bath at 60°C for 2 hours, rotate and stir for 2 hours, let it stand for aging overnight, then dry it in vacuum at 70°C for 24 hours, and bake it in an air atmosphere at 550°C for 5 hours,...

Embodiment 2

[0080] 1. Preparation of impregnation solution

[0081] Weigh cesium nitrate CsNO 3 14.6 g, La(NO 3 ) 3 ·6H 2 O 12.4 grams, prepared into 100 milliliters of a homogeneous solution, left to stand overnight for use.

[0082] 2. Preparation of carrier

[0083] Get 200.0 grams of pseudo-boehmite, 3.0 grams of pore-forming agent methylcellulose, slowly add 180 grams of an aqueous solution containing 30% nitric acid in terms of weight percentage, and stir evenly, then add 5 grams of PEG2000, and knead for 40 Minutes later, extruded and dried at 100° C. for 18 hours, and calcined at 800° C. for 5 hours to obtain a cylindrical carrier with a diameter of 3 mm and a length of 5 mm.

[0084] 3. Preparation of catalyst

[0085] Take 86 grams of the carrier, add the prepared impregnating solution, put the impregnating system in a 60°C water bath, rotate and stir for 2 hours, let stand and age overnight, then dry at 50°C for 24 hours, and bake in an air atmosphere at 550°C for 5 hours...

Embodiment 3

[0089] 1. Preparation of impregnation solution

[0090] Weigh cesium nitrate CsNO 3 14.6 g, Ce(NO 3 ) 3 ·6H 2 O 12.3 grams, prepared into 100 ml of a homogeneous solution, left to stand overnight for use.

[0091] 2. Preparation of carrier

[0092] Get 200.0 grams of pseudo-boehmite, 3.0 grams of pore-forming agent methylcellulose, slowly add 180 grams of an aqueous solution containing 30% nitric acid in terms of weight percentage, and stir evenly, then add 5 grams of PEG2000, and knead for 40 Minutes later, extruded and dried at 100° C. for 18 hours, and calcined at 800° C. for 5 hours to obtain a cylindrical carrier with a diameter of 3 mm and a length of 5 mm.

[0093] 3. Preparation of catalyst

[0094] Take 86 grams of the carrier, add the prepared impregnating solution, put the impregnating system in a 60°C water bath, rotate and stir for 2 hours, let stand and age overnight, then dry at 50°C for 24 hours, and bake in an air atmosphere at 550°C for 5 hours , to ob...

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Abstract

The invention relates to a catalyst for preparing methyl acrylate from methyl acetate and formaldehyde and an application of the catalyst, and mainly solves the problem of a low yield of methyl acrylate in the process of preparing the methyl acrylate from methyl acetate. The above problem is better solved by using the following technical solution: the catalyst for preparing the methyl acrylate from the methyl acetate and the formaldehyde comprises the following components in parts by mass: 0.1-40 parts of an active component, and 50-100 parts of a carrier, wherein the active component includesat least one selected from alkali metal elements; and the catalyst can be used in the production of the methyl acrylate or methyl propionate by condensation of the methyl acetate and the formaldehyde.

Description

technical field [0001] The invention relates to a catalyst for producing methyl acrylate from methyl acetate and formaldehyde and its application. Background technique [0002] Methyl acrylate is an important fine chemical raw material with a wide range of uses. It is mainly used in organic synthesis intermediates and macromolecular monomers. Polymers prepared from methyl acrylate are widely used in coatings, textiles, leather, Adhesives and other industries. [0003] The preparation methods of acrylic acid and its esters mainly include propylene oxidation method, acrylonitrile hydrolysis method, ketene method, propane oxidation method and methyl formate method. However, these methods have disadvantages such as serious pollution, high energy consumption, and low product yield. Therefore, it is of great significance to develop green and efficient new production processes. [0004] The production capacity of methyl acetate in our country is greatly excessive. Using industri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/02B01J23/10C07C69/54C07C67/343
CPCB01J23/02B01J23/10C07C67/343C07C69/54
Inventor 余强刘仲能刘晓曦刘旭刘革
Owner CHINA PETROLEUM & CHEM CORP
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