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Method for preparing resorcinol by using isomerization of catechol

A technology for resorcinol and isomerization, applied in the field of preparing resorcinol, can solve the problems of equipment corrosion, large equipment investment, long production process, etc. Effect

Active Publication Date: 2013-08-21
BEIJING RISUN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the prior art, there are mainly problems such as serious equipment corrosion, serious pollution of the environment by the three wastes, long production process, difficult treatment of reaction by-products, and large equipment investment.

Method used

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  • Method for preparing resorcinol by using isomerization of catechol
  • Method for preparing resorcinol by using isomerization of catechol
  • Method for preparing resorcinol by using isomerization of catechol

Examples

Experimental program
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Effect test

Embodiment 1

[0025] 100 grams of mordenite molecular sieves (purchased from Nankai Catalyst Factory, with a silicon-aluminum ratio of 5) were ion-exchanged with 500 milliliters of 1 mole per liter of ammonium nitrate. Each exchange was carried out for 4 hours, the solution temperature was 90° C., and the number of exchanges was 4 times. Then dry at 120°C and bake at 550°C for 3 hours. Mix the ion-exchanged molecular sieve, pseudo-boehmite, and kale powder evenly (molecular sieve: pseudo-boehmite: kale powder = 35:15:2). Then add a nitric acid solution with a concentration of 8wt% and knead it into shape. The extruded catalyst carrier was dried in the shade at room temperature for 12 hours, then dried at 120°C for 5 hours, and calcined at 550°C for 3 hours. Take 10 grams of the calcined catalyst carrier and add it to 30 mL of an aqueous solution containing 0.2 wt% Pt, the immersion time is 12 hours, and the immersion temperature is 50°C. Then, dry at 120° C. for 4 hours, and roast at 550...

Embodiment 2

[0030] 100 grams of ZSM-5 (purchased from Nankai Catalyst Factory, with a silicon-to-aluminum ratio of 38) zeolite molecular sieve was ion-exchanged with 500 milliliters of ammonium nitrate of 1 mole per liter. Each exchange was carried out for 4 hours, the solution temperature was 90° C., and the number of exchanges was 4 times. Then dry at 120°C and bake at 550°C for 3 hours. Mix the ion-exchanged molecular sieve, pseudo-boehmite, and kale powder evenly (molecular sieve: pseudo-boehmite: kale powder = 35:15:2). Then add a nitric acid solution with a concentration of 8wt% and knead it into shape. The extruded catalyst carrier was dried in the shade at room temperature for 12 hours, then dried at 120°C for 5 hours, and calcined at 550°C for 3 hours. Take 10 grams of the calcined catalyst carrier and add it to 30 mL of an aqueous solution containing 0.2 wt% Pt, the immersion time is 12 hours, and the immersion temperature is 50°C. Then, dry at 120° C. for 4 hours, and roast ...

Embodiment 3

[0035]100 grams of β-type zeolite molecular sieves (purchased from Nankai Catalyst Factory, with a silicon-aluminum ratio of 50) were ion-exchanged with 500 milliliters of ammonium nitrate of 1 mole per liter. Each exchange was carried out for 4 hours, the solution temperature was 90° C., and the number of exchanges was 4 times. Then dry at 120°C and bake at 550°C for 3 hours. Mix the ion-exchanged molecular sieve, pseudo-boehmite, and kale powder evenly (molecular sieve: pseudo-boehmite: kale powder = 35:15:2). Then add a nitric acid solution with a concentration of 8wt% and knead it into shape. The extruded catalyst carrier was dried in the shade at room temperature for 12 hours, then dried at 120°C for 5 hours, and calcined at 550°C for 3 hours. Take 10 grams of the calcined catalyst carrier and add it to 30 mL of an aqueous solution containing 0.2 wt% Pt, the immersion time is 12 hours, and the immersion temperature is 50°C. Then, dry at 120° C. for 4 hours, and roast a...

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Abstract

The invention provides a method for preparing resorcinol by using isomerization of catechol. According to the preparation method provided by the invention, the resorcinol is prepared from catechol through catalytic isomerization. Compared with an existing resorcinol production process, the method for preparing the resorcinol by using isomerization of catechol has the characteristic of environmental friendliness, namely under a fixed bed reaction, through special catalyst production, the characteristics of less three-waste discharge, mild reaction conditions, high automation degree and the like in the production process are achieved. Therefore, according to the method disclosed by the invention, the problems, such as serious corrosion of equipment, serious environment pollution from three wastes, long production procedure, difficulty in treatment of reaction byproducts and high equipment investment in the prior art are mainly solved, and the problems in a traditional process are well solved; and the method provided by the invention can be used for industrial production of resorcinol.

Description

technical field [0001] The invention relates to the field of chemical industry, and more specifically, relates to a method for preparing resorcinol by isomerizing catechol. Background technique [0002] Resorcinol, commonly known as resorcinol, chemical name is 1,3-benzenediol, is an important organic chemical raw material. Resorcinol has a wide range of uses, mainly involving rubber industry, wood processing industry, pharmaceutical industry, agriculture, etc. In addition, it is also used in the production of cosmetics, leather tanning and zinc detection agents, ultraviolet absorbers, azo dyes, and flame retardants , preservatives and explosives, etc. [0003] At present, my country mainly uses resorcinol in the construction and automobile industries. With the recent development of the domestic construction industry, the demand for building materials and house decoration materials has grown rapidly, which has stimulated the consumption of wood adhesives. Therefore, the de...

Claims

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Application Information

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IPC IPC(8): C07C39/08C07C37/00
Inventor 张英伟薛全民孙长江印文雅潘小君
Owner BEIJING RISUN TECH CO LTD
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