Solid catalyst for propylene manufacture with propane oxo-dehydrogenation and method for producing the same
A solid catalyst, oxidative dehydrogenation technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, organic chemistry, etc., can solve the problem of high reaction temperature
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Embodiment 1
[0021] Embodiment 1: 10.8g citric acid is made into 15ml solution, adds 10.8g Ni (NO 3 ) 2 ·6H 2 O, 60 ° C, the above solution was stirred until gelatinous. The above material was dried at 110° C. for 24 h to obtain a foamy solid. The solid was calcined at 450° C. for 4 hours to obtain nano-nickel oxide. Add nano-nickel oxide to 18ml 0.012mol / L H 3 PMo 12 o 40 Solution, continue to add 0.9ml of 0.3mol / L Cs under vigorous stirring at 60°C 2 CO 3 solution. The above suspension was evaporated to dryness at 110°C, and the obtained solid was calcined at 450°C for 4 hours to obtain a catalyst, which was ground and shaped into 30-60 mesh particles. The prepared catalyst was used in the reaction of propane oxidative dehydrogenation to propylene. The reaction conditions are: the composition of the reaction gas is C 3 h 8 :O 2 :N 2 The ratio is 2:8:40, the reaction temperature is 450°C, the amount of catalyst is 0.5g, and the space velocity is 6000ml·h -1 g -1 . Under t...
Embodiment 2
[0022] Example 2: 12g of citric acid was made into 15ml solution, and 0.9ml of 0.3mol / L Cs was added successively under vigorous stirring 2 CO 3 solution, 12g Ni(NO 3 ) 2 ·6H 2 O and 1.8ml of 0.12mol / L H 3 PMo12 o 40 solution. The above mixed solution was stirred at 60°C until gelatinous, and dried at 110°C for 24 hours to obtain a foamy solid. The solid was calcined at 450°C for 4 hours to obtain the catalyst. The above catalyst is molded into 30-60 mesh particles. The prepared catalyst is used for the reaction of propane oxidative dehydrogenation to propylene, and the reaction conditions are reaction gas composition C 3 h 8 :O 2 :N 2 The ratio is 2:8:40, the reaction temperature is 450°C, the catalyst dosage is 0.5g, and the space velocity is 6000m1·h -1 g -1 . Under the reaction conditions, the conversion rate of propane was 72.3%, the selectivity to propylene was 19.8%, and the yield of propylene was 8.2%.
Embodiment 3
[0023] Example 3: 61g of citric acid was made into 45ml solution, and 2ml of 0.3mol / L Cs was added successively under vigorous stirring 2 CO 3 solution, 18.5g Ni(NO 3 ) 2 ·6H 2 O and 4ml of 0.12mol / L H 3 PMo 12 o 40 solution. The above mixed solution was stirred at 60°C until gelatinous, and dried at 110°C for 24 hours to obtain a foamy solid. The solid was calcined at 450° C. for 4 hours to obtain the catalyst. The above catalyst is molded into 30-60 mesh particles. The prepared catalyst is used for the reaction of propane oxidative dehydrogenation to propylene, and the reaction conditions are: reaction gas composition C 3 h 8 :O 2 :N 2 The ratio is 2:8:40, the reaction temperature is 450°C, the catalyst dosage is 0.5g, and the space velocity is 6000m1·h -1 g -1 . Under the reaction conditions, the conversion of propane was 41.3%, the selectivity to propylene was 43.2%, and the yield of propylene was 17.8%.
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