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Method for catalyzing synthesizing sec-butyl alcohol through cation exchange resin

A cation exchange and sec-butanol technology is applied in the field of catalyzing the synthesis of sec-butanol using cation exchange resin, which can solve the problems of low yield, small equipment corrosion, harsh reaction conditions, etc., and achieves high catalytic activity, low equipment corrosion, selective effect

Inactive Publication Date: 2012-12-26
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the harsh reaction conditions and lower yields of existing synthetic 2-butanol defects, and provide a method utilizing cation exchange resins to catalyze the synthesis of 2-butanol. The conversion rate of 2-butyl acetate of the present invention can be Up to 35-50%, with mild reaction conditions, little corrosion on equipment, high selectivity, high catalyst activity, reusable, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] at 5m 3 In the tank reactor, 2101.5 kg of sec-butyl acetate and 580 kg of methanol were added, and 10 kg of C68 ion exchange resin catalyst was added at the same time. The reaction pressure was normal pressure, the temperature of the reactor was controlled at 50 ° C, and the stirring speed was 200 rpm. After constant temperature reaction for 2 hours, the conversion rate of sec-butyl acetate was 38.4%. The yield of sec-butanol was 37.8%.

Embodiment 2

[0016] at 5m 3 In the tank reactor, 2101.5kg of sec-butyl acetate and 580kg of methanol were put in, and 11.3kg of CT175D ion exchange resin catalyst was put in at the same time. The reaction pressure was normal pressure, the temperature of the reactor was controlled at 60°C, and the stirring speed was 300rpm. After constant temperature reaction for 2 hours, the conversion rate of sec-butyl acetate was 40.3%. The yield of sec-butanol was 39.8%.

Embodiment 3

[0018] at 5m 3 In the tank reactor, 2101.5kg of sec-butyl acetate and 1160kg of methanol were put into it, and 30kg of NKC-9 ion exchange resin catalyst was put into it at the same time, the reaction pressure was normal pressure, the temperature of the reactor was controlled at 50°C, and the stirring speed was 400rpm. After constant temperature reaction for 2 hours, the conversion rate of sec-butyl acetate was 48.8%. The yield of sec-butanol was 48.5%.

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PUM

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Abstract

The invention discloses a method for catalyzing synthesizing sec-butyl alcohol through cation exchange resin. The method comprises the step of carrying out ester exchange under the effect of the cation exchange resin with the sec-butyl acetate and the carbinol serving as the raw materials, so as to synthesize to obtain the sec-butyl alcohol. The sec-butyl acetate provided by the invention has the conversion rate up to 35 to 50%; and the method has the advantages that the reaction condition is mild, the corrosion to equipment is low, the selectivity and the activity of a catalyst are high, and repeated use is realized.

Description

technical field [0001] The invention belongs to the technical field of transesterification reaction, and in particular relates to a method for catalytically synthesizing sec-butanol by using a cationic exchange resin. Background technique [0002] Sec-butanol can be used as a solvent in industry, as a co-solvent with methanol, as a component to increase the octane number of gasoline, and also as an emulsifier, paint remover, dehydrating agent, dye dispersant, industrial detergent, etc.; It is also used in the production of beneficiation agents, plasticizers, herbicides, etc.; but the most important application is the production of methyl ethyl ketone through catalytic dehydrogenation, accounting for about 90% of the total consumption. [0003] The traditional method of synthesizing sec-butanol is to hydrate n-butene to generate sec-butanol, mainly including indirect hydration with sulfuric acid, direct hydration catalyzed by resin and direct hydration catalyzed by heteropoly...

Claims

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Application Information

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IPC IPC(8): C07C31/12C07C29/128C07C69/14C07C67/03
Inventor 黄智贤李玲王红星叶长燊邱挺李俊澜
Owner FUZHOU UNIV
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