Method of selective oxidation of hydrogen in propane dehydrogenation process
A propane dehydrogenation, selective technology, applied in chemical instruments and methods, physical/chemical process catalysts, hydrocarbons, etc., can solve the problems of low oxygen conversion rate and high hydrocarbon consumption
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Embodiment 1
[0026] Al 2 o 3 See the patent (patent application number: 201010146868.4) for the preparation of the carrier, the same below.
[0027] Weigh 2 grams of particles with a size of 10 nanometers and a specific surface area of 50 meters 2 / g, nano-Al with a pore size of 29 nm 2 o 3 Carrier, add 10 ml of deionized water, respectively pipette 0.18 ml of H with a mass concentration of 0.004 g / ml 2 PtCl 6 solution and 1.44 ml of Ce(NO with a mass concentration of 0.0012 g / ml 3 ) 4 solution, add dropwise 0.022 g of SnCl 4 solution, use 2.5% ammonia water to adjust the pH value of the solution to 3.5, then soak it in a water bath at 80°C for 1 hour, take out the sample and filter it, dry it in an oven at 120°C for 8 hours, and then put the sample into a muffle furnace at 550°C ℃ for 4 hours to obtain the desired catalyst. The prepared catalyst is loaded into a fixed-bed reactor, propane in the feed gas: propylene: hydrogen: the oxygen molar ratio is 1: 1: 0.5: 0.25, at 1 atmo...
Embodiment 2
[0029] Weigh 2 grams of particles with a size of 60 nanometers and a specific surface area of 50 meters 2 / g, nano-Al with a pore size of 29 nm 2 o 3 Carrier, add 10 ml of deionized water, respectively pipette 0.88 ml of H with a mass concentration of 0.004 g / ml 2 PtCl 6 solution and 7.2 milliliters of La(NO 3 ) 4 solution, add dropwise 0.0439 g of SnCl 4 Solution, use 2.5% ammonia water to adjust the pH value of the solution to 1, then soak it in a water bath at 80°C for 1 hour, take out the sample and filter it, dry it in an oven at 120°C for 8 hours, then put the sample into a muffle furnace at 550°C ℃ for 4 hours to obtain the desired catalyst. The prepared catalyst is loaded into a fixed bed reactor, propane in the feed gas: propylene: hydrogen: oxygen molar ratio is 1: 0.2: 0.2: 0.1, at 5 atmospheric pressure, 550 ℃ and space velocity 600 hours -1 The activity evaluation was carried out under the following conditions, and the results were as follows: the selecti...
Embodiment 3
[0031] Weigh 2 grams of particles with a size of 60 nanometers and a specific surface area of 50 meters 2 / g, nano-Al with a pore size of 29 nm 2 o 3 Carrier, add 10 ml of deionized water, respectively pipette 0.88 ml of H with a mass concentration of 0.004 g / ml 2 PtCl 6 solution and 7.2 ml of Ce(NO with a mass concentration of 0.0012 g / ml 3 ) 4 solution, drop 0.3295 g of Fe(NO 3 ) 3 solution, use 2.5% ammonia water to adjust the pH value of the solution to 3.5, then soak it in a water bath at 80°C for 1 hour, take out the sample and filter it, dry it in an oven at 120°C for 8 hours, and then put the sample into a muffle furnace at 550°C ℃ for 4 hours to obtain the desired catalyst. The prepared catalyst is loaded into a fixed-bed reactor, propane in the feed gas: propylene: hydrogen: oxygen molar ratio is 1: 0.5: 0.5: 0.25, at 10 atmospheric pressure, 550 ℃ and space velocity 600 hours -1 The activity evaluation was carried out under the following conditions, and th...
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