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Method for preparing durene from carbon monoxide and methanol

A carbon monoxide and mesitylene technology, which is applied in chemical instruments and methods, hydrocarbon production from oxygen-containing organic compounds, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as restricting the production scale of mesitylene

Active Publication Date: 2021-03-19
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of raw materials in physical separation, the production scale of durene is restricted
The trimethylene alkylation technology is also limited by the raw materials of trimethylene

Method used

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  • Method for preparing durene from carbon monoxide and methanol
  • Method for preparing durene from carbon monoxide and methanol
  • Method for preparing durene from carbon monoxide and methanol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] The preparation process of the catalyst is as follows: 120 grams of HZSM-5 molecular sieve with a molar silicon-aluminum ratio of 20 is mixed with 60 grams of diatomaceous earth and 100 grams of silicon dioxide with a weight content of 20% silica sol, and an appropriate amount of 10% dilute nitric acid is added as an auxiliary agent Extrusion molding. Dry at 120°C and bake at 500°C for 10 hours. The above-mentioned catalyst was cut into 1 mm to prepare columnar catalyst precursor A0 (ie intermediate product I).

[0099] The A0 sample of 20 grams was immersed in an aqueous solution containing copper nitrate and zinc nitrate for 12 hours, dried at 120°C, and roasted at 600°C for 3 hours. The weight content of copper oxide was 3%, and the weight content of zinc oxide was 3%. A1( That is the intermediate product II).

[0100] 20 grams of A1 was subjected to steam treatment in a 100% steam atmosphere for 10 hours at a temperature of 350° C., a pressure of 1.0 MPa, and roas...

Embodiment 2

[0103] The preparation process of the catalyst is as follows: 60 grams of HZSM-5 molecular sieve with a molar silicon-aluminum ratio of 30, mixed with 100 g of silica sol with a weight content of 40% by weight, and 100 grams of alumina, adding an appropriate amount of 10% dilute nitric acid as an auxiliary agent to extrude forming. Dry at 120°C and bake at 700°C for 4 hours. The above catalyst was cut into 3 mm to prepare columnar catalyst precursor B0.

[0104] 20 grams of B0 samples were immersed in an aqueous solution containing ferric nitrate and zinc nitrate for 12 hours, dried at 120°C, and roasted at 550°C for 10 hours. The weight content of iron oxide was 15%, and the weight content of zinc oxide was 1%. B1 was obtained.

[0105] 20 grams of B1 were subjected to steam treatment in a 100% steam atmosphere for 0.5 hour, the treatment temperature was 800° C., the pressure was 2.0 MPa, and the B2 was obtained by roasting at 600° C. for 3 hours.

[0106] Add 50ml of 1% by...

Embodiment 3

[0108] The preparation process of the catalyst is as follows: 200 grams of HZSM-5 molecular sieve with a molar silicon-aluminum ratio of 40 is mixed with 20 grams of diatomite and 30 grams of kaolin, and an appropriate amount of 10% dilute nitric acid is added as an auxiliary agent to extrude. Dry at 120°C and bake at 550°C for 4 hours. The above catalyst was cut into 1.5 mm to prepare columnar catalyst precursor D0.

[0109] 20 grams of D0 samples were immersed in an aqueous solution containing both zinc nitrate and cerium nitrate for 24 hours, dried at 120°C, and roasted at 600°C for 3 hours. The weight percentage of zinc oxide was 8%, and the weight percentage of cerium oxide was 1%. D1 was obtained. .

[0110] 20 grams of D1 were subjected to steam treatment for 10 hours in a 100% steam atmosphere, the treatment temperature was 350° C., the pressure was 3.0 MPa, and roasted at 650° C. for 3 hours to obtain D2.

[0111] Add 20 grams of D2 to 50 ml of 5% nitric acid soluti...

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Abstract

The invention discloses a method for preparing durene from carbon monoxide and methanol. The method comprises the following steps: contacting a raw material containing carbon monoxide and methanol with a catalyst in a reactor, and reacting to obtain the durene, wherein the catalyst is prepared by modifying a material containing a molecular sieve, and the modification treatment is selected from atleast one of oxide modification, water vapor treatment and acid treatment. According to the method provided by the invention, the defects of a traditional durene process route are overcome, and the method for preparing durene by coupling carbon monoxide and methanol is a new process technology for producing durene. The preparation of durene by using carbon monoxide and methanol as raw materials isnot restricted by the raw materials, the device is easy to realize large-scale production, and the methodhas good economy, and has good industrial application prospect.

Description

technical field [0001] The application relates to a method for preparing durene from carbon monoxide and methanol, which belongs to the technical field of chemical product preparation. Background technique [0002] C10 aromatic hydrocarbons are a large family, the main members are tetramethylbenzene, partial tetramethylbenzene, durene, methylpropylbenzene, butylbenzene, diethylbenzene, methylindene, naphthalene and so on. In recent years, the use of pyromellitic dianhydride has been expanding, such as the synthesis of polyimide. Polyimide is a new type of synthetic material with high temperature resistance, low temperature resistance, radiation resistance, impact resistance and excellent electrical conductivity and mechanical properties. It has important uses that cannot be replaced by other engineering plastics in the aerospace and electromechanical industries. [0003] Durene is an important fine chemical raw material. The pyromellitic dianhydride obtained by oxidation an...

Claims

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Application Information

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IPC IPC(8): C07C1/20C07C15/02B01J29/46B01J29/40B01J29/48B01J29/78B01J29/70B01J29/80
CPCC07C1/20B01J29/46B01J29/405B01J29/48B01J29/7876B01J29/7088B01J29/7049B01J29/80B01J23/002B01J2523/00C07C2529/46C07C2529/40C07C2529/48C07C2529/78C07C2529/70C07C2529/80C07C15/02B01J2523/27B01J2523/3712B01J2523/842Y02P20/52
Inventor 王坤院刘中民朱文良倪友明马现刚
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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