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Synthesis of SBA-15-SO3II solid-phase catalyst and Beckmann rearrangement, esterification catalytic performances

A technology of esterification reaction and solid acid catalyst, which is applied in the direction of catalyst activation/preparation, molecular sieve catalyst, physical/chemical process catalyst, etc. It can solve the problems of cumbersome, unfavorable practical application, and uninspected catalyst catalytic performance, etc., to achieve good catalytic activity Effect

Inactive Publication Date: 2006-11-01
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
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  • Application Information

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Problems solved by technology

However, these methods are cumbersome and unfavorable for practical application, and the catalytic performance of the obtained catalyst in the liquid phase Beckmann rearrangement and esterification reaction has not been investigated.

Method used

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  • Synthesis of SBA-15-SO3II solid-phase catalyst and Beckmann rearrangement, esterification catalytic performances
  • Synthesis of SBA-15-SO3II solid-phase catalyst and Beckmann rearrangement, esterification catalytic performances
  • Synthesis of SBA-15-SO3II solid-phase catalyst and Beckmann rearrangement, esterification catalytic performances

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0030] At a constant stirring speed, add a certain amount of TEOS and CSPTMS dropwise into 4g of P123 hydrochloric acid solution, and stir at 40°C to obtain a molar composition of 1+xSiO 2 :x CSPTMS:6.5HCl:180H 2 A mixture of O where x = 0.05, 0.1, 0.15, 0.2. The mixture was further stirred at 40 °C for 30 h. Then, let it stand at 100°C for 1 day, and the product is suction filtered and dried to obtain the synthetic SBA-15-Ph-SO 3 H. After the sample was extracted with ethanol for 20 hours, it was directly roasted in air at 210°C for 6 hours to obtain the desired catalyst. Sample N 2 The adsorption-desorption isotherm curve, XRD pattern, specific surface area, pore volume and elemental analysis results are shown in Figure 1-Figure 2 and Table 1-Table 2.

example 2

[0032] Preparation of Synthetic SBA-15-Ph-SO 3 The process of H is the same as example 1, and the synthetic type SBA-15-Ph-SO is taken 3 H is directly calcined at 210°C in air for 6 hours to obtain SBA-15-Ph-SO 3 H catalyst

example 3

[0034]Add 0.1 g of catalyst, 0.1 g ε-caprolactam, and 20 ml of toluene into a 50 ml two-necked flask equipped with a condenser. After stirring at 130°C for 24 hours in an oil bath, samples were taken and analyzed by GC-MAS (chromatography-mass spectrometry).

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Abstract

A strong-acidity solid SBA-15-Ph-SO3H catalyst for preparing synthetic fiber Nylon-6, cosmetics and food by Beckmann reforming reaction and esterifying reaction is prepared from ethyl n-silicate (TEDS) as Si source, triblock copolymer Pluronic 123 (P123) as template agent and 2-(4-phenylsulfuryl chloride) ethyl trimethyl silicate (CSPTMS) as phenylsulfonyl precursor. It has high catalytic activity to said two reactions.

Description

1. Technical field [0001] The present invention uses orthoethyl silicate (TEOS) as a silicon source, Pluronic123 triblock copolymer (P123) as a template, and 2-(4-benzenesulfonyl chloride) ethyl trimethylsilicate (CSPTMS) as benzene Sulfonic acid group precursor, preparation of strong acidic solid acid catalyst SBA-15-Ph-SO 3 H, and apply it to liquid-phase Beckmann rearrangement and esterification reactions. 2. Background technology [0002] At present, more and more stringent environmental regulations stimulate factories and enterprises to continuously innovate their production technologies and processes so that the production process can be more compatible with the environment. Compared with "final treatment", "source control" is a more effective method to control the increasingly serious global environmental pollution problems. The development of new catalysts based on new materials is an important part of "source control". The recently emerging mesoporous molecular s...

Claims

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Application Information

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IPC IPC(8): B01J27/053B01J29/00B01J37/00
Inventor 赵伟郝郑平
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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