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

A technology of thiazole sulfenamide and tert-butylbenzene is applied in the field of composition and preparation of catalysts, can solve problems such as not involving catalyst research, and achieve the effects of good catalytic effect, good activity and easy industrialization

Inactive Publication Date: 2012-01-11
KEMAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method also does not involve the study of catalysts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Measure dry SiO 2 The saturated adsorption capacity of the carrier (80 mesh) is 0.9mL / g, weigh 100g of the carrier, and put it in a crucible for subsequent use; dissolve 0.2g of copper acetate in 90mL of distilled water, and stir to make it all dissolve to form an aqueous solution of copper acetate; Slowly pour the copper aqueous solution into the crucible containing the carrier, stir while pouring, and continue to stir after pouring to make it fully mixed; place it at room temperature for 8 hours to fully infiltrate the copper acetate solution and the carrier; Dry it in an oven at 120°C for 4 hours, then place it in a muffle furnace and bake it at 400°C for 4 hours; after the roasting, place the crucible in a desiccator to cool down to room temperature, and then crush the sintered large particles Pass through a 80-mesh sieve, put the sieved catalyst in a sealed bag, and put it in a desiccator for subsequent use.

[0023] This catalyst is used in the reaction of oxygen...

Embodiment 2

[0025] Measure dry Al 2 o 3 The saturated adsorption capacity of carrier (200 orders) is 1.1mL / g, weighs this carrier 100g, puts in the crucible for subsequent use; Dissolve 5g cobalt nitrate in 110mL ethanol, stir to make it all dissolve and form the ethanolic solution of cobalt nitrate; Slowly pour the alcohol solution of cobalt nitrate into the crucible containing the carrier, stir while pouring, and continue to stir after pouring to make it fully mixed; place it at room temperature for 24 hours, and the cobalt nitrate solution and the carrier are fully infiltrated; Dry the mixture in an oven at 120°C for 4 hours, then place it in a muffle furnace and bake it at a temperature of 800°C for 12 hours; After the particles are crushed, pass through a 200-mesh sieve, put the sieved catalyst in a sealed bag, and put it in a desiccator for standby.

[0026] Dissolve 5g of cerium nitrate in 110mL of ethanol, stir to make it all dissolve to form an ethanol solution of cerium nitrat...

Embodiment 3

[0029] Measure dry TiO 2 The saturated adsorption capacity of carrier (240 order) is 1.3mL / g, weighs this carrier 100g, puts in the crucible for subsequent use; Dissolve 10g manganese sulfate in 130mL distilled water, stir to make it all dissolve and form manganese sulfate aqueous solution; Manganese sulfate Slowly pour the aqueous solution into the crucible containing the carrier, stir while pouring, and continue to stir after pouring to make it fully and evenly mixed; place it at room temperature for 36 hours to fully infiltrate the manganese sulfate solution and the carrier; Roasting in a Furnace at a temperature of 550°C and a calcination time of 24 hours; after the calcination, place the crucible in a desiccator to cool down to room temperature, then crush the sintered large particles and pass through a 240-mesh sieve, and the sieved catalyst Put it in a sealed bag to obtain the finished catalyst, and put it in a desiccator for later use.

[0030] This catalyst is used i...

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PUM

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Abstract

The invention relates to a catalyst used for producing promoter N-t-butyl benzothiazole sulfonamide and its preparation method, the catalyst is one or more metal salt of copper acetate, copper sulphate, cupric nitrate, cobaltous acetate, rose vitriol, oleic acid cobalt, cobalt nitrate, acetic acid cerium, sulfuric acid cerium, cerium nitrate, manganese acetate, manganese sulfate, manganous nitrate and the like. A carrier of the catalyst is one or more of SiO2, Al2O3, TiO2, medium-pore material molecular sieve, microporous material molecular sieve and the like. The prepared catalyst is used for synthesizing TBBS by using an oxygen oxidation process, the reaction is used for characterizing the performance of the catalyst. The catalyst amount accounts for 0.02-0.1% of weight of the reactant. The invention has the advantages that the catalyst formula is reasonable, an active ingredient and the carrier are contained, the amount is small and the catalysis effect is good, and the catalyst is capable of increasing the disperse area of the active ingredient to increase the contact area of the active ingredient and the reactant, raising the reaction speed and simultaneously reducing the catalyst amount. The catalyst enables more than 97% of yield of TBBS by optimizing the reaction condition.

Description

technical field [0001] The present invention relates to a kind of catalyst that a kind of rubber vulcanization accelerator TBBS (chemical name is N-tert-butylbenzothiazole sulfenamide) is used in oxygen oxidation synthetic process, specifically, relate to a kind of TBBS oxygen oxidation process The composition and preparation method of the catalyst used. Background technique [0002] Accelerator N-tert-butylbenzothiazole sulfenamide (TBBS, NS) is a post-effect accelerator, which is very safe at operating temperature, has good scorch resistance, high elongation strength, and can improve the use of synthetic rubber. Ratio, increase the amount of filler carbon black, the activity is greater than the accelerator CBS, NOBS, etc., the discoloration and pollution are slight, so its performance is excellent, so it is called "standard accelerator". NS has now become one of the leading accelerator varieties in domestic and foreign markets, and the consumption of NS in developed count...

Claims

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Application Information

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IPC IPC(8): B01J31/04B01J27/25B01J27/053B01J29/40C07D277/80
Inventor 尹红伟
Owner KEMAI CHEM
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