Methanol-to-aromatic hydrocarbon catalyst and uses tehreof

A technology for catalysts and aromatics, which is applied in molecular sieve catalysts, physical/chemical process catalysts, and hydrocarbon production from oxygen-containing organic compounds. The effect of mild conditions and simple process

Inactive Publication Date: 2017-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the problem of poor stability and low BTX selectivity of methanol-to-aromatics catalysts in the prior art; a new catalyst for methanol-to-aromatics is provided, which is used in the methanol-to-aromatics reaction , with the advantages of high yield of aromatics, good selectivity of BTX and good catalyst stability

Method used

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  • Methanol-to-aromatic hydrocarbon catalyst and uses tehreof
  • Methanol-to-aromatic hydrocarbon catalyst and uses tehreof
  • Methanol-to-aromatic hydrocarbon catalyst and uses tehreof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 19 g of tetrapropylammonium bromide, 3.3 g of sodium hydroxide, and 9.8 g of aluminum isopropoxide into 180 g of deionized water, and vigorously stir and hydrolyze at room temperature for 6 hours to obtain solution A. Add 127 g of ethyl orthosilicate, 1.2 g of sodium hydroxide, and 5.3 g of polyoxyethylene lauryl ether into 120 g of water, and stir vigorously for 5 hours to obtain solution B. After mixing A and B, stir at room temperature for 6 hours, transfer the obtained mixed solution into a stainless steel crystallization kettle, and conduct hydrothermal treatment at 180° C. for 50 hours. After the crystallization is complete, the obtained white powder is filtered and washed repeatedly with deionized water until neutral. Dry the white powder at 110°C, calcinate at 550°C for 8 hours, exchange the molecular sieve with 0.5 mol / L ammonium nitrate three times, dry and calcinate according to the previous steps, and obtain a hydrogen-type medium with a silicon-aluminum...

Embodiment 2

[0028] Using the carrier I of Example 1, take 15 grams of carrier I, soak it in 11 milliliters of zinc nitrate solution containing 1.1 grams of zinc oxide, let it stand at room temperature for 24 hours, dry it, and bake it at 560° C. for 4 hours to prepare catalyst B. The reaction conditions are the same as in Example 1.

Embodiment 3

[0030] Add 7.8 g of n-butylamine, 2.3 g of sodium hydroxide, and 6.0 g of sodium metaaluminate into 150 g of deionized water, and vigorously stir and hydrolyze at room temperature for 5 hours to obtain solution A. Add 127 grams of ethyl orthosilicate, 1.5 grams of sodium hydroxide, and 6.2 grams of polyvinyl alcohol into 120 grams of water, and stir vigorously for 7 hours to obtain solution B. A and B were mixed and then stirred at room temperature for 4 hours to obtain a mixed solution. Other conditions are identical with embodiment 1. According to the specific surface area test, the total specific surface area of ​​the mesoporous ZSM-5 molecular sieve is 415m 2 / g, the mesopore specific surface area is 125m 2 / g, the average pore diameter is 7.7nm.

[0031]Take 20 grams of molecular sieves, 1.2 grams of turnip powder, and 24 grams of silica sol with a mass concentration of 40% and fully knead them, extrude them, dry and roast them to make catalyst carrier II. Take 15 gra...

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Abstract

The present invention relates to a methanol-to-aromatic hydrocarbon catalyst and uses thereof. A purpose of the present invention is mainly to solve the problems of low selectivity and poor catalyst stability in the conversion of methanol into aromatic hydrocarbons in the prior art. The technical scheme of the present invention comprises that a modified mesoporous and microporous compounded molecular sieve is adopted as a catalyst, methanol is adopted as a raw material, and the raw material is subjected to an aromatization reaction at a reaction temperature of 360-500 DEG C under a reaction pressure of 0-1.0 MPa at a raw material mass space velocity of 0.4-8 h<-1> under the effect of the catalyst. With the technical scheme, the problems in the prior art are well solved. The catalyst of the present invention can be used for the industrial production of methanol-to-aromatic hydrocarbon.

Description

technical field [0001] The invention relates to a catalyst for producing aromatics from methanol and its application. Background technique [0002] Aromatics are important basic chemical raw materials, widely used in many fields such as clothing fabrics, electrical products, agricultural production, transportation, etc. The annual consumption of aromatics in my country exceeds 20 million tons. At present, the production of aromatics mainly comes from petroleum, relying on catalytic reforming of petroleum products, pyrolysis gasoline hydrogenation extraction and other processes. Due to the shortage of petroleum resources in our country, benzene, toluene and xylene are highly dependent on foreign countries. In view of the current situation of coal-rich, oil-deficient and gas-poor resources in my country, it is of great significance to develop methanol-to-aromatics technology based on coal resources. [0003] Methanol to aromatics refers to the process in which methanol is co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/40C07C1/20C07C15/00C07C15/04C07C15/06C07C15/08C07C15/02
CPCY02P20/52
Inventor 许烽汪哲明肖景娴陈希强
Owner CHINA PETROLEUM & CHEM CORP
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