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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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the limitation of raw materials in physical separation, the production scale of durene is re

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
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Example Embodiment

[0097]Example 1

[0098]The preparation process of the catalyst is as follows: an HzSM-5 molecular sieve 120 grams of the silicone aluminum ratio of 20, mixed with 60 grams of carbite, 100 grams of silica weight content 20% silica sol, adding an appropriate amount of 10% dilute nitric acid as auxiliary agent Squeeze the mold. 120 ° C Dry, 500 ° C for 10 hours. The above catalyst is cut into 1 mM to prepare columnar catalyst maternal A0 (i.e., intermediate I).

[0099]20 grams of A0 samples were used to impregnate the aqueous solution of copper-nitrate and zinc nitrate, dried at 120 ° C, 3 hours at 600 ° C, and the copper oxide weight content was 3%, and zinc oxide weight content was 3%, and A1 was produced. Intermediate II).

[0100]20 g of A1 was treated in a 100% water vapor atmosphere for 10 hours, and the treatment temperature was 350 ° C, and the pressure was 1.0 MPa, and 550 ° C was calcined for 3 hours to prepare A2 (i.e., intermediate III).

[0101]50 mL of a 0.2% aqueous phosphoric aci...

Example Embodiment

[0102]Example 2

[0103]The preparation process of the catalyst is as follows: 60 grams of HzSM-5 molecular sieve having a moisture-aluminum aluminum ratio of 30, with a weight of 100 g of silica, 100 grams of alumina, adding an appropriate amount of 10% dilute nitric acid as auxiliary strip. forming. 120 ° C drying, 700 ° C for 4 hours. The above catalyst was cut into 3 mM to prepare a columnar catalyst parent B0.

[0104]20 grams of B0 samples were used to contain simultaneous iron nitrate and zinc nitrate, and 10 hours at 120 ° C, 550 ° C for 10 hours, and iron oxide weight content was 15%, and zinc oxide weight content was 1%, and B1 was obtained.

[0105]20 g of B1 was treated in a 100% water vapor atmosphere of 0.5 hours, and the treatment temperature was 800 ° C, pressure 2.0 MPa, and 600 ° C were calcined for 3 hours.

[0106]50 ml of B2 was added to 20 g of B2, a solution of aqueous phosphoric acid solution was added, soaked in 60 ° C for 4 hours, washed to neutral. 120 ° C drying, 550...

Example Embodiment

[0107]Example 3

[0108]The preparation process of the catalyst is as follows: 200 grams of HzSM-5 molecular sieves of 40 grams of aluminum ratio of 40 grams of carbalite, 30 grams of kaolin mixed, and the amount of 10% dilute nitric acid is added as auxiliary strip shape. 120 ° C Dry, 550 ° C for 4 hours. The catalyst was cut into 1.5 mM to prepare columnar catalyst parent D0.

[0109]20 grams of D0 samples were used to impregnate the aqueous solution of zinc nitrate and cerium nitrate, dried at 120 ° C, baked for 3 hours at 600 ° C, and zinc oxide weight was 8%, and the weight percent of the cerium oxide was 1%. .

[0110]20 grams of D1 were treated in a 100% water vapor atmosphere for 10 hours, and the treatment temperature was 350 ° C, 3.0 MPa, and 650 ° C for 3 hours.

[0111]20 g of D2 was added to a 50 ml weight content of 5% nitric acid solution, soaking room temperature for 24 hours. 120 ° C Dry, baked for 3 hours at 600 ° C. Produce catalyst D. The molecular sieve in the catalyst is 8...

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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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