Catalyst for production of methyl acetate through carbonylation of dimethyl ether and application thereof

A technology of methyl acetate and catalyst, which is applied in the direction of physical/chemical process catalyst, carbon monoxide or formate reaction preparation, molecular sieve catalyst, etc., and can solve problems such as easy deactivation

Active Publication Date: 2017-06-27
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The above-mentioned patents disclose a large number of research results on the carbonylation of dimethyl ether, and the catalyst has been running stably for less than 100 hours, and is easily deactivated

Method used

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  • Catalyst for production of methyl acetate through carbonylation of dimethyl ether and application thereof
  • Catalyst for production of methyl acetate through carbonylation of dimethyl ether and application thereof
  • Catalyst for production of methyl acetate through carbonylation of dimethyl ether and application thereof

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Experimental program
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Effect test

Embodiment 1

[0032] The preparation of embodiment 1 Na-EMT molecular sieve

[0033] According to the method in the document Synthesis of silica-rich faujasite using crown-ethers astemplates: F.Delprato et, ZEOLITES, 1990, VOl 10: 546, three samples were prepared, respectively denoted as A (after the crystallization was completed, rinse with cold water Chilling down to room temperature), B (after the crystallization is completed, move it out of the oven to cool to room temperature) and C (after the crystallization is complete, cool down to room temperature in the oven at a rate of 10°C / hour).

Embodiment 2

[0034] The characterization of embodiment 2 Na-EMT molecular sieve

[0035] The median diameter D of Na-EMT molecular sieve samples A, B and C were measured respectively 50 , and the results are shown in Table 1.

[0036] Table 1

[0037] Na-EMT molecular sieve number Median particle size D 50 (microns)

Embodiment 3

[0038] The preparation of embodiment 3 H-EMT molecular sieve catalyst samples

[0039] After the Na-EMT molecular sieve samples prepared in Example 1 were roasted at 550°C, 10 grams were taken respectively, exchanged three times with 0.5mol / L ammonium nitrate (2 hours / time), washed with deionized water, dried, and dried at 550 ℃ calcined for 4 hours, and then extruded to prepare a 20-40 mesh H-EMT molecular sieve catalyst sample.

[0040] The H-EMT molecular sieve catalyst samples prepared from Na-EMT molecular sieve samples A, B and C are respectively designated as sample 1 # , sample 2 # and sample 3 # .

[0041] Adopt XRD to sample 1 respectively # , sample 2 # and sample 3 # The phase of the phase is characterized, and the typical representative is sample 1 # , the result is as figure 1 shown. Depend on figure 1 It can be seen that sample 1 # It is an acidic molecular sieve with EMT structure.

[0042] Sample 1 was examined by scanning electron microscopy# The ...

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Abstract

The invention discloses a catalyst for production of methyl acetate through carbonylation of dimethyl ether. The catalyst is characterized by containing an EMT molecular sieve, wherein the median particle diameter D50 of the EMT molecular sieve is not greater than 6 micrometers. By using the EMT molecular sieve as an active component, the methyl acetate selectivity and the catalyst stability can be greatly improved; and after continuously reacting on a fixed bed for 100 hours, the methyl acetate selectivity in the product can still be kept at 91-98.3%.

Description

technical field [0001] The application relates to a catalyst for the carbonylation of dimethyl ether to produce methyl acetate and its application, which belongs to the field of chemical engineering. Background technique [0002] With the rapid development of modern industry, the contradiction between energy supply and demand has become increasingly prominent. my country, as a big energy consumer and a big energy shortage country, urgently needs to find alternative energy sources. As a clean energy source, ethanol has good miscibility and can be added to gasoline as a blending component to partially replace gasoline, increase the octane number and oxygen content of gasoline, effectively promote the complete combustion of gasoline, and reduce Carbon monoxide and hydrocarbon emissions in vehicle exhaust. As a partial substitute of vehicle fuel, ethanol can make my country's vehicle fuel present a diversified structural feature. At present, my country mainly develops fuel et...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/08B01J29/14C07C67/37C07C69/14
CPCB01J29/08B01J29/14B01J2229/186B01J2229/32B01J2229/37C07C67/37C07C69/14
Inventor 刘红超朱文良倪友明刘勇刘中民王林英田鹏
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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