Preparation method of catalyst for preparing propylene by virtue of propane dehydrogenation
A propane dehydrogenation and catalyst technology, which is applied in the direction of chemical instruments and methods, physical/chemical process catalysts, hydrocarbons, etc., can solve the problems of pollution and high product cost, reduce energy consumption, reduce preparation costs, and reduce calcination temperature Effect
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Embodiment 1
[0021] A method for preparing a catalyst for the dehydrogenation of propane to propylene, comprising an alumina carrier and active components with the following contents based on the carrier as a calculation basis:
[0022]
[0023] The balance is impurities;
[0024] The molar ratio of cerium or samarium to platinum group metal is 7:8; the platinum group metal is platinum; the halogen is chlorine;
[0025] The alumina carrier is impregnated with a soluble cerium or samarium compound solution, a calcium silicate salt solution, dried and calcined, and then impregnated with a platinum group metal compound and a hydrogen halide solution, dried, calcined, and then impregnated with a potassium salt solution. Drying and calcining; then mixing the above-mentioned corresponding amounts of cerium oxide and pore-forming agent, and calcining at 600° C. for 3 hours to obtain the catalyst for the dehydrogenation of propane to propylene.
Embodiment 2
[0027] A method for preparing a catalyst for the dehydrogenation of propane to propylene, comprising an alumina carrier and active components with the following contents based on the carrier as a calculation basis:
[0028]
[0029] The balance is impurities;
[0030] The molar ratio of cerium or samarium to platinum group metal is 7:8; the platinum group metal is platinum; the halogen is chlorine;
[0031] The alumina carrier is impregnated with a soluble cerium or samarium compound solution, a calcium silicate salt solution, dried and calcined, and then impregnated with a platinum group metal compound and a hydrogen halide solution, dried, calcined, and then impregnated with a potassium salt solution. Drying and calcining; then mixing the above-mentioned corresponding amounts of cerium oxide and pore-forming agent, and calcining at 600° C. for 3 hours to obtain the catalyst for the dehydrogenation of propane to propylene.
Embodiment 3
[0033] A method for preparing a catalyst for the dehydrogenation of propane to propylene, comprising an alumina carrier and active components with the following contents based on the carrier as a calculation basis:
[0034]
[0035] The balance is impurities;
[0036] The molar ratio of cerium or samarium to platinum group metal is 7:8; the platinum group metal is platinum; the halogen is chlorine;
[0037] The alumina carrier is impregnated with a soluble cerium or samarium compound solution, a calcium silicate salt solution, dried and calcined, and then impregnated with a platinum group metal compound and a hydrogen halide solution, dried, calcined, and then impregnated with a potassium salt solution. Drying and calcining; then mixing the above-mentioned corresponding amounts of cerium oxide and pore-forming agent, and calcining at 600° C. for 3 hours to obtain the catalyst for the dehydrogenation of propane to propylene.
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