Metal-modified cation exchange resin catalyst, preparation method and application thereof

A cation exchange and metal modification technology, which is applied in the application field of the synthesis reaction of sec-butyl acetate, can solve the problems of catalyst corrosion, low conversion rate and high cost, and achieve the effects of no equipment corrosion, cost reduction and long service life

Active Publication Date: 2013-02-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a metal-modified cation exchange resin catalyst and its preparation method and application, which solves the deficiencies of the prior art catalyst such as corrosion of equipment, low conversion rate and high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. The present embodiment prepares the metal-modified cation exchange resin catalyst according to the following method: a. After washing the hydrogen-type strongly acidic cation exchange resin several times with deionized water, dry it in a vacuum drying oven at 90° C. to constant weight; b. .React the dried hydrogen-type strongly acidic cation exchange resin with the ethanol solution of ferric chloride for 4 hours at 30°C; React at 30°C for 3 hours; d. Wash with absolute ethanol for 5 times, put it into a vacuum drying oven, and dry at 90°C to constant weight to obtain a modified ion exchange resin catalyst.

[0020] 2. This catalyst is used in the reaction of 1-butene and acetic esterification to synthesize sec-butyl acetate, and the reaction results are shown in Table 1.

Embodiment 2

[0022] 1. Preparation of metal-modified ion-exchange resin catalyst: a: Wash 70 grams of hydrogen-type styrene-based strongly acidic cation-exchange resin with deionized water for 5 times, each time for 20 minutes, and dry in a vacuum oven at 90°C for 20 hours ; B: the dried hydrogen-type strongly acidic cation exchange resin and 350g mass percent are 15% FeCl 3 The ethanol solution was modified under stirring for 7.5 hours, washed 5 times with absolute ethanol, 5 minutes each time, and dried in a vacuum oven at 90°C for 20 hours; c: The dried hydrogen-form cation exchange resin was washed with 0.5 % of SnCl 4 300 g of ethanol solution was reacted under stirring for 8 hours; d: Washed 5 times with absolute ethanol for 20 minutes each time, and dried in a vacuum oven at 90° C. for 20 hours to obtain a metal-modified ion exchange resin catalyst.

[0023] 2. This catalyst is used in the reaction of acetic acid and 1-butene to synthesize sec-butyl acetate, and the reaction is car...

Embodiment 3

[0025] 1. Preparation of metal-modified ion-exchange resin catalyst: a: Wash 70 grams of hydrogen-type styrene-based strongly acidic cation-exchange resin with deionized water for 5 times, each time for 20 minutes, and dry in a vacuum oven at 90°C for 20 hours ; B: the dried hydrogen-type strongly acidic cation exchange resin and 350g mass percent are 15% FeCl 3 The ethanol solution was modified under stirring for 7.5 hours, washed 5 times with absolute ethanol, 5 minutes each time, and dried in a vacuum oven at 90°C for 20 hours; c: The dried hydrogen-form cation exchange resin was washed with 0.5 % of SnCl 4 300 g of ethanol solution was reacted under stirring for 8 hours; d: Washed 5 times with absolute ethanol for 20 minutes each time, and dried in a vacuum oven at 90° C. for 20 hours to obtain a metal-modified ion exchange resin catalyst.

[0026] 2. This catalyst is used in the reaction of acetic acid and 1-butene to synthesize sec-butyl acetate, and the reaction is car...

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Abstract

The invention discloses a metal-modified cation exchange resin catalyst, a preparation method and an application thereof. The catalyst employs a cation exchange resin as a matrix and comprises a first metal element modifier selected one or more from Fe, Al and Zn and a second metal element modifier selected one or more from Si, Ni and Pd. The preparation method of the catalyst comprises the steps of loading the first metal element modifier on the cation exchange resin; drying and loading the second metal element modifier on the cation exchange resin. The catalyst is applied in a reaction process for synthesizing sec-butyl acetate, solves the problems that a conventional catalyst for synthesizing sec-butyl acetate erodes equipment, and has high cost and low esterification efficiency.

Description

technical field [0001] The invention relates to a metal-modified cation exchange resin catalyst, a preparation method of the catalyst and an application in the synthesis reaction of sec-butyl acetate. Background technique [0002] Second-butyl acetate is one of the four isomers of butyl acetate. It is a colorless, flammable liquid with a fruity aroma. It is insoluble in water and miscible with ethanol and ether. Second-butyl acetate is widely used in nitrocellulose, paint, artificial leather, medicine, paint, fragrance, ink and plastic industries. At the same time, it can also be used as extractant, dehydrating agent and metal cleaning agent and other components. CN1844076A takes sulfuric acid as catalyzer, produces butyl acetate with reactive distillation, uses sulfuric acid as catalyzer, will inevitably cause corrosion to equipment, and discharges a large amount of acid-containing waste water, and environmental pollution problem is serious. CN184187C discloses with super...

Claims

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Application Information

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IPC IPC(8): B01J31/30B01J31/28B01J31/26C07C69/14C07C67/04
Inventor 刘野霍稳周李花伊吕清林魏晓霞田丹
Owner CHINA PETROLEUM & CHEM CORP
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