Catalyst for propane dehydrogenation to propylene
A propane dehydrogenation and catalyst technology, which is applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, hydrocarbons, etc., can solve the problem of low selectivity of propane dehydrogenation catalysts
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Embodiment 1
[0033] Weigh 52.66 grams of chromium nitrate, 2.15 grams of potassium nitrate, and 3.78 grams of sodium titanate, add them to 100 ml of deionized water, and then add 86 grams of them with a specific surface area of 117m 2 / g, aluminum oxide carrier with a pore size of 15nm, adjust the pH value of the solution to 3.5 with 2.5% ammonia water, then soak in a water bath at 80°C for 1 hour, take out the sample for filtration, dry it in an oven at 120°C for 8 hours, and then put the sample Put it into a muffle furnace and bake at 550° C. for 4 hours to obtain the desired catalyst.
[0034]Adjust the flow of propane gas through the mass flow meter, enter the preheating zone for preheating, and then enter the reaction zone. The heating section and the reaction section of the reactor are heated by electric heating wires to make them reach the predetermined temperature. The inner diameter of the reactor is Ф6mm Quartz tube, about 400mm long. After the reaction gas passes through the ...
Embodiment 2
[0037] Weigh 52.66 grams of chromium nitrate, 2.15 grams of potassium nitrate, and 3.78 grams of sodium titanate, add them to 100 ml of deionized water, and then add 86 grams of them with a specific surface area of 340m 2 / g, alumina carrier with a pore size of 9nm, adjust the pH value of the solution to 3.5 with 2.5% ammonia water, and then soak it in a water bath at 80°C for 1 hour, take out the sample for filtration, dry it in an oven at 120°C for 8 hours, and then put the sample Put it into a muffle furnace and bake at 550° C. for 4 hours to obtain the desired catalyst. The propane raw material and the above-mentioned catalyst were reacted under the same conditions as in Example 1, and the results are shown in Table 1.
Embodiment 3
[0039] Weigh 52.66 grams of chromium nitrate, 2.15 grams of potassium nitrate, and 3.78 grams of sodium titanate, add them to 100 ml of deionized water, and then add 86 grams of them with a specific surface area of 173m 2 / g, aluminum oxide carrier with a pore size of 12nm, adjust the pH value of the solution to 3.5 with 2.5% ammonia water, then soak in a water bath at 80°C for 1 hour, take out the sample for filtration, dry it in an oven at 120°C for 8 hours, and then put the sample Put it into a muffle furnace and bake at 550° C. for 4 hours to obtain the desired catalyst. The propane raw material and the above-mentioned catalyst were reacted under the same conditions as in Example 1, and the results are shown in Table 1.
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