A kind of modified cation exchange resin catalyst and its preparation method and application
A technology of cation exchange and resin exchange, which is applied in the direction of chemical instruments and methods, preparation of organic compounds, physical/chemical process catalysts, etc., can solve the problems of low conversion rate, catalyst corrosion, easy deactivation, etc., and achieve good dispersion, No equipment corrosion and long service life
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Embodiment 1
[0019] 1. Preparation of solid super acid-modified ion exchange resin catalyst: a: Wash 50 grams of hydrogen-type styrene-based strong acid cation exchange resin with deionized water for 5 times, 20 minutes each time, and dry it in a vacuum drying box at 100°C 24 hours; b: mix the dried hydrogen-type strong acid cation exchange resin with 200 g of 3.9% Zn (NO 3 ) 2 The aqueous solution was immersed for 8 hours, titrated to neutrality with ammonia water, washed and dried in a vacuum drying oven at 90 ° C for 20 hours; c: The dried hydrogen cation exchange resin was treated with 15% (NH 4 ) 2 SO 4 300 g of the aqueous solution was impregnated in excess for 8 hours; d: after filtration, put it in a vacuum drying oven at 100°C to dry for 20 hours, and then calcined at 210°C for 8 hours to obtain a solid superacid-modified ion-exchange resin catalyst.
[0020] 2. This catalyst was used in the reaction of acetic acid and 1-butene to synthesize sec-butyl acetate. The reaction was ...
Embodiment 3
[0022] 1. Preparation of solid super acid-modified ion exchange resin catalyst: a: Wash 70 grams of hydrogen-type styrene-based strong acid cation exchange resin with deionized water for 5 times, 20 minutes each time, and dry in a vacuum drying box at 100°C 24 hours; b: mix the dried hydrogen-type strong acid cation exchange resin with 200 g of 2.9% Zn (NO 3 ) 2 The aqueous solution was immersed for 8 hours, titrated to neutrality with ammonia water, washed and dried in a vacuum drying oven at 90 ° C for 20 hours; c: The dried hydrogen cation exchange resin was treated with 15% (NH 4 ) 2 SO 4 300 g of the aqueous solution was soaked in excess for 8 hours; d: after filtration, put it in a vacuum drying oven for 16 hours at 100°C, and then calcined at 220°C for 9 hours to obtain a solid superacid-modified ion-exchange resin catalyst.
[0023] 2. This catalyst was used in the reaction of acetic acid and 1-butene to synthesize sec-butyl acetate. The reaction was carried out on ...
Embodiment 4
[0025] 1. Preparation of solid super acid-modified ion exchange resin catalyst: a: Wash 90 grams of hydrogen-type styrene-based strong acid cation exchange resin with deionized water for 5 times, 20 minutes each time, and dry in a vacuum drying box at 100°C 24 hours; b: mix the dried hydrogen-type strong acid cation exchange resin with 300 g of 7.1% Zn (NO 3 ) 2 The aqueous solution was immersed for 8 hours, titrated to neutrality with ammonia water, washed and dried in a vacuum drying oven at 90 ° C for 20 hours; c: The dried hydrogen cation exchange resin was treated with 15% (NH 4 ) 2 SO 4 300 g of the aqueous solution was impregnated in excess for 8 hours; d: after filtration, put it in a vacuum drying oven at 100°C to dry for 18 hours, and then calcined at 230°C for 10 hours to obtain a solid superacid-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. The reaction is carri...
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