Polyoxymethylene dimethyl ether catalyst
A dimethyl ether and catalyst technology, applied in the field of polyoxymethylene dimethyl ether catalyst, can solve the problems of high cost of paraformaldehyde, low catalyst reaction efficiency, etc., and achieve the effect of good yield
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Embodiment 1
[0025] 1. Preparation of catalyst
[0026] (1) Polymerization and hybridization: At room temperature, add 144 grams of styrene, 16 grams of divinylbenzene, 1 gram of BPO and 40 grams of toluene to a 1000 ml three-necked flask and stir evenly, then add 500 mesh BaFe 12 o 19 40g, stir evenly, add 300g of 1.0w% PVA aqueous solution, then react at 70°C for 3h, 80°C for 1h, and 95°C for 45min under stirring, to obtain a pellet-shaped product, stop stirring, and keep 95°C to cook Ball 30min. All the products in the three-necked flask were poured into water for cleaning. The product was washed with ethanol and then washed with H 2 O was washed, placed in an oven and dried at 80° C. for 4 h to obtain 200 g of catalyst precursor I.
[0027] (2) Sulfonation: Add 200 grams of catalyst precursor I to 400 grams of 1,2-dichloroethane to swell at room temperature for 4 hours, then add 100 grams of H with a purity of 98w%. 2 SO 4 , stirring and downloading at 85°C for 3h, and then at 11...
Embodiment 2
[0034] 1. Preparation of catalyst
[0035] (1) Polymerization and hybridization: at room temperature, add 144 grams of styrene, 16 grams of divinylbenzene, 1 gram of BPO and 40 grams of toluene to a 1000 ml three-necked flask and stir evenly, then add 500 mesh Pm 3 Fe 5 o 12 40g, stir evenly, add 300g of 1.0w% PVA aqueous solution, then react at 70°C for 3h, 80°C for 1h, and 95°C for 45min under stirring, to obtain a pellet-shaped product, stop stirring, and keep 95°C to cook Ball 30min. All the products in the three-necked flask were poured into water for cleaning. The product was washed with ethanol and then washed with H 2 O was washed, placed in an oven and dried at 80° C. for 4 h to obtain 200 g of catalyst precursor I.
[0036](2) Sulfonation: Add 200 grams of catalyst precursor I to 400 grams of 1,2-dichloroethane to swell at room temperature for 4 hours, then add 100 grams of H with a purity of 98w%. 2 SO 4 , stirring and downloading at 85°C for 3h, and then at ...
Embodiment 3
[0041] 1. Preparation of catalyst
[0042] (1) Polymerization and hybridization: at room temperature, add 144 g of styrene, 16 g of divinylbenzene, 1 g of BPO and 40 g of toluene into a 1000 ml three-necked flask and stir evenly, then add 500 mesh Sm 3 Fe 5 o 12 40g, stir evenly, add 300g of 1.0w% PVA aqueous solution, then react at 70°C for 3h, 80°C for 1h, and 95°C for 45min under stirring, to obtain a pellet-shaped product, stop stirring, and keep 95°C to cook Ball 30min. All the products in the three-necked flask were poured into water for cleaning. The product was washed with ethanol and then washed with H 2 O was washed, placed in an oven and dried at 80° C. for 4 h to obtain 200 g of catalyst precursor I.
[0043] (2) Sulfonation: Add 200 grams of catalyst precursor I to 400 grams of 1,2-dichloroethane to swell at room temperature for 4 hours, then add 100 grams of H with a purity of 98w%. 2 SO 4 , stirring and downloading at 85°C for 3h, and then at 110°C for 2h...
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