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Catalyst used for producing promoter N-cyclohexyl benzothiazole sulfonamide and its preparation method

A technology of thiazole sulfenamide and cyclohexylbenzene is applied in the field of composition and preparation of catalysts, which can solve problems such as not involving catalyst research, and achieve the effects of good catalytic effect, small usage amount and simple process

Inactive Publication Date: 2012-03-21
KEMAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the literature also does not involve the study of catalysts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Measure the saturated adsorption capacity of dry activated carbon (80 mesh) to be 0.9mL / g, weigh 100g of the carrier, and put it in a crucible for later use; dissolve 0.5g of copper sulfate in 90mL of distilled water, and stir to make it completely dissolve to form an aqueous solution of copper sulfate Slowly pour the copper sulfate aqueous solution into the crucible containing the carrier, stir while pouring, and continue stirring after pouring to make it fully mixed; place it at room temperature for 8 hours to fully infiltrate the copper sulfate solution and the carrier; The impregnated granules were dried in a vacuum oven at 100°C for 1 hour, and the dried impregnated granules were roasted in a muffle furnace at a temperature of 400°C for 4 hours; after the calcination, the crucible was placed in a desiccator room temperature, then crush the sintered large particles and pass through an 80-mesh sieve, put the sieved catalyst in a sealed bag, and put it in a desiccator ...

Embodiment 2

[0023] Measure dry Al 2 o 3 The saturated adsorption capacity of carrier (200 mesh) is 1.1mL / g, weighs this carrier 100g, puts in the crucible for subsequent use; Dissolve 5g cobalt acetate in 110mL ethanol, stir to make it all dissolve and form the ethanolic solution of cobalt acetate; Slowly pour the alcohol solution of cobalt acetate into the crucible containing the carrier, stir while pouring, and continue stirring after pouring to make it fully and evenly mixed; place it at room temperature for 24 hours to fully infiltrate the cobalt sulfate solution and the carrier; after infiltration The impregnated granules were dried in a vacuum oven at 130°C for 2 hours, and the dried impregnated granules were roasted in a muffle furnace at a temperature of 800°C for 12 hours; after the calcination, the crucible was placed in a desiccator to room temperature, then crush the sintered large particles and pass through a 200-mesh sieve, put the sieved catalyst in a sealed bag, and put i...

Embodiment 3

[0026] Measure dry TiO 2 The saturated adsorption capacity of carrier (240 order) is 1.3mL / g, weighs 100g of this carrier, puts in the crucible for standby; Dissolve 10g manganese nitrate in 130mL distilled water, stir to make it all dissolve to form manganese nitrate aqueous solution; Manganese nitrate Slowly pour the aqueous solution into the crucible containing the carrier, stir while pouring, and continue stirring after pouring to make it fully mixed; place it at room temperature for 36 hours to fully infiltrate the manganese nitrate solution and the carrier; put the impregnated particles in Dry in a vacuum oven at 150°C for 1.5h, place the dried impregnated particles in a muffle furnace and roast at a temperature of 550°C for 24h; after the roasting, place the crucible in a desiccator to room temperature, The sintered large particles are crushed and passed through a 240-mesh sieve, and the sieved catalyst is placed in a sealed bag and placed in a desiccator for standby us...

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Abstract

The invention relates to a catalyst used for producing promoter N-cyclohexyl benzothiazole sulfonamide and its preparation method. The catalyst is selected from one or more of metal salts of copper acetate, copper sulphate, cupric nitrate, cobaltous acetate, cobaltous sulphate, cabaltous nitrate, cerium acetate, ceric sulfate, cerium nitrate, manganese acetate, manganese sulfate, manganese nitrate and the like. A carrier of the catalyst is selected from one or more of active carbon, SiO2, Al2O3, TiO2, mesoporous material molecular sieve, microporous material molecular sieve and the like. The prepared catalyst is used in a reaction for synthesizing CBS by oxygen through an oxidation process, the reaction is used for representing the performance of the catalyst. The catalyst amount is 0.01-0.1% of weight of a reactant. The catalyst has reasonable formula, contains active ingredients and carriers, the usage amount is less, and the catalysis effect is good. The catalyst is capable of increasing the dispersion area of the active ingredients so as to increase the contact area of the active ingredients and the reactant, raising the reaction speed and simultaneously reducing the amount of the catalyst. The CBS yield can reach more than 98% by optimizing the reaction condition.

Description

technical field [0001] The invention relates to a catalyst used in the oxygen oxidation synthesis process of a rubber vulcanization accelerator CBS (the chemical name is N-cyclohexylbenzothiazole sulfenamide), specifically, it relates to a catalyst used in the oxygen oxidation process of CBS The composition and preparation method of the catalyst used. Background technique [0002] Accelerator N-cyclohexylbenzothiazole sulfenamide (CBS or CZ) is a highly active post-effect semi-overspeed accelerator with excellent scorch resistance, safe processing and short vulcanization time. It is a must for the rubber industry at present. less of a major accelerator. The existing production process of CBS can be divided into four kinds according to different oxidants: sodium peroxide method, hydrogen peroxide method, oxidant-free synthesis method and oxygen method. Domestic manufacturers mainly adopt the first two production methods, and foreign large-scale enterprises have manufacturer...

Claims

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Application Information

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IPC IPC(8): B01J27/055B01J31/26B01J27/25B01J29/80C07D277/80
Inventor 尹红伟
Owner KEMAI CHEM
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