Method for preparing resin assembled heteropoly acid salt catalyst

A technology of heteropolyacid salt and heteropolyacid, which is applied in the field of preparation of resin-assembled heteropolyacid salt catalyst, can solve the problems of loss of active components, small specific surface area, and reduction of catalyst acidity, so as to avoid the trouble of separation, and the ratio The effect of large surface area and high acid strength

Active Publication Date: 2006-06-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present in this patented technology describes methods for making a type of catalyst called a polymersorbate complex (PRC) that contains different types of acids attached at its inside surfaces. These PRC' s are then combined together to form a single molecule containing multiple atoms of each component. They have many benefits over existing homogeneous catalysis systems due to their uniform distribution within them.

Problems solved by technology

This patents discusses different types of catalysators used during chemical redox processes like reduction, dealkilation, cyclizations, esterifications, polymerisations, and alkaline gas exchange. While some catalyst systems were previously studied beforehand, none offer sufficient stability at room temperature without adding any substances which could harm human bodies. To address this problem, several groups explored ways to improve upon the properties of conventional catalyst supports while maintaining safety standards.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0034] This example illustrates the preparation of resin-assembled heteropolyacid nickel salt and its application in C 4 Application in the process of olefin lamination.

[0035] Take 100g of Amberlyst15 hydrogen styrene-divinylbenzene resin and place it in a 1000ml beaker, add 400ml 0.1mol / L NiSO 4 The solution was exchanged at room temperature for 5 hours, the solution was filtered off, washed with deionized water 4 times, and dried at 120°C for 6 hours. The obtained nickel-containing resin was placed in a 1000ml beaker, and 400ml of 0.05mol / L phosphotungstic acid was added. The solution was stirred at 80°C for 5 hours, the excess heteropolyacid solution was filtered off, and then dried at 125°C to obtain a resin group assembled with a phosphotungstic acid nickel salt catalyst. After analysis, the assembled amount of phosphotungstic acid nickel salt is 19.8% by weight.

[0036] Take 20 g of the above catalyst and put it into the middle of a fixed bed reactor with an inner diamet...

example 2

[0039] This example illustrates the preparation of the resin-assembled heteropolyacid acid ammonium salt catalyst and its application in the etherification process.

[0040] Take 100g of hydrogen styrene-divinylbenzene resin of S grade and place it in a 1000ml beaker, add 400ml 0.1mol / L(NH 4 ) 2 SO 4 The solution was exchanged at room temperature for 6 hours, the solution was filtered off, washed with deionized water 4 times, and dried at 120°C for 6 hours. The obtained resin was placed in a 1000ml beaker, and 400ml 0.065mol / L phosphotungstic acid solution was added to Stir at 80°C for 5 hours, filter, wash with deionized water 4 times, and then bake at 150°C for 5 hours to obtain a resin-assembled phosphotungstic acid ammonium salt catalyst. After analysis, the assembled amount of the phosphotungstate ammonium salt was 23.3% by weight.

[0041] Take 20 g of the above resin catalyst and put it into the middle of a fixed bed reactor with an inner diameter of 12 mm and a height of 6...

example 3

[0043] This example illustrates the preparation of resin-assembled heteropoly acid potassium salt and its application in the esterification process.

[0044] Take 100g of Amberlyst 35 hydrogen resin and place it in a 1000ml beaker, add 400ml 0.1mol / L KNO 3 The solution was exchanged at room temperature for 5 hours, the solution was filtered, washed with deionized water 4 times, and dried at 120°C for 6 hours. The obtained resin was placed in a 1000ml beaker, and 400ml 0.065mol / L phosphotungstic acid solution was added. Stir at 80°C for 5 hours, filter, wash with deionized water 4 times, and then dry at 150°C to obtain a resin-assembled phosphotungstic acid potassium salt catalyst. The analysis showed that the assembled amount of potassium phosphotungstate was 24.5% by weight.

[0045] Take 5g of the above resin catalyst and put it into a 250ml three-necked flask with a reflux water separator, add 1mol of glacial acetic acid and 2mol of n-butanol, heat and reflux for 2 hours, cool ...

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Abstract

The preparation process of resin assembled heteropoly acid salt catalyst includes the following steps: 1. soaking cationic exchange resin in exchange solution for the hydrogen ion on the resin and the cation capable of forming insoluble salt with heteropoly acid to exchange in exchange degree controlled in 0.5-95 %; 2. soaking the obtained cation exchange resin in heteropoly acid solution for the hydrogen ion in heteropoly acid solution and cation on the resin to exchange, with the exchanged cation and the heteropoly anion producing insoluble heteropoly acid salt depositing onto the surface of the resin in the supported amount of 1-60 wt%; and 3. washing and drying the obtained resin. The resin assembled heteropoly acid salt catalyst has the features of high acid strength, high acid amount, great specific surface area, water insolubility, etc. and is one kind of high performance compound organic-inorganic catalyst capable of being used in various acid catalyzed reactions.

Description

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Claims

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Application Information

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Owner CHINA PETROLEUM & CHEM CORP
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