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Method for producing p-tert-Butyltoluene by using mordenite for catalyzing toluene and tertiary butanol

A technology of p-tert-butyltoluene and mordenite, which is applied in the field of production of p-tert-butyltoluene, can solve problems such as environmental pollution, low yield, and corrosion of equipment, and achieve the effect of overcoming corrosion of equipment

Inactive Publication Date: 2014-04-02
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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Problems solved by technology

[0005] The object of the present invention is to provide a method for producing p-tert-butyltoluene by gas-phase catalysis of mordenite from toluene and tert-butanol. Acid catalyst corrodes equipment, causes environmental pollution, and intermittent liquid phase reaction has the disadvantages of high production intensity and low yield

Method used

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  • Method for producing p-tert-Butyltoluene by using mordenite for catalyzing toluene and tertiary butanol
  • Method for producing p-tert-Butyltoluene by using mordenite for catalyzing toluene and tertiary butanol
  • Method for producing p-tert-Butyltoluene by using mordenite for catalyzing toluene and tertiary butanol

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Embodiment 1

[0012] Reaction conditions: the molar ratio of raw materials is 1:4 (toluene: tert-butanol), and the volumetric liquid space velocity is 2 ml / g cat ·H, the catalyst is a mordenite molecular sieve catalyst that has been activated at 550°C for 3 hours. The gas-solid phase continuous reaction is carried out at different reaction temperatures for 10 hours. The results are shown in Table 1.

[0013] Attached Table 1 Catalytic performance at different reaction temperatures

[0014]

Embodiment 2

[0016] Reaction conditions: reaction temperature is 180°C, raw material molar ratio (toluene: tert-butanol) 1:4, catalyst is mordenite molecular sieve catalyst activated at 550°C for 3 hours, and different liquid space velocities are used for continuous gas-solid reaction 10 hours, the results are shown in Table 2.

[0017] Attached Table 2 Catalytic performance under different liquid space velocity

[0018]

Embodiment 3

[0020] Reaction conditions: feed space velocity 4 ml / g cat ·H. The reaction temperature is 180°C. The catalyst is a mordenite molecular sieve catalyst that has been activated at 550°C for 3 hours. Different raw material ratios (toluene: tert-butanol) are used for continuous gas-solid reaction for 10 hours. The results are shown in Table 3.

[0021] Attached Table 3 Catalytic performance under different toluene / tert-butanol ratios

[0022]

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Abstract

The invention discloses a method for producing p-tert-Butyltoluene by using mordenite for catalyzing toluene and tertiary butanol, which uses a mordenite catalyst, n(SiO2) / n(Al2O3)=30, the catalyst is conducted activating treatment for 3 hours at 550 DEG C, or the catalyst is conducted treatment for 4 hours at 100 DEG C in 0.2mol / L NaOH solution, then the p-tert-Butyltoluene is obtained after roasting at 550 DEG C. At the reaction temperature of 150-190 DEG C, liquid space velocity is 1-8ml / gcatXh, and mole ratio of the toluene / the tertiary butanol is 1:1-1:6. In a fixed bed reactor, toluene percent conversion is 10-33%, and selectivity of the p-tert-Butyltoluene achieves 35-75%. The method can continuously produce the p-tert-Butyltoluene under soft reaction conditions, and overcomes the shortcoming that in the traditional production method, liquid acid catalysts corrode equipment, environmental contamination is caused, interval liquid phase reaction is big in production strength, and production rate is low.

Description

Technical field [0001] The invention relates to a method for producing p-tert-butyl toluene, in particular to a method for producing p-tert-butyl toluene by mordenite gas phase catalytic toluene and tert-butanol. Background technique [0002] As an important chemical intermediate, tert-butyl toluene has important uses for its immediate, meta and three isomers, especially p-tert-butyl toluene, the p-tert-butyl benzoic acid obtained after oxidation , Is an important organic synthesis intermediate, can be used as metal processing cutting fluid, lubricating oil additives, etc.; chlorinated p-tert-butylbenzyl chloride is an important pesticide, pharmaceutical production intermediate, after oxidation P-tert-butylbenzaldehyde is an important raw material for fine chemical products and food industry. Industrially, the production process of synthesizing tert-butyl toluene mostly uses toluene and isobutylene as raw materials for the reaction, and uses liquid acids as catalysts such as con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C15/02C07C2/86
Inventor 申延明李士凤樊丽辉刘东斌宁志高
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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