Supported catalyst, preparation method and application thereof and propylene preparation method using propane dehydrogenation

[0026] According to a preferred embodiment of the present invention, the process of mixing and contacting includes: (1) Combining cetyltrimethylammonium bromide (CTAB), polyethylene glycol octylphenyl ether (Triton X -100) and hydrochloric acid are stirred at a temperature of 25-60°C to dissolve; (2) the solution obtained in step (1) and the silicate are stirred at a temperature of 25-60°C for 10-72 hours, and then stand for 10-72 hours.

[0027] In the present invention, the preparation method of the carrier preferably further includes washing and drying processes after the filtration. The washing and drying process can be a conventional choice in the field, and will not be repeated here.

[0028] In the present invention, the template agent can be removed by washing and / or calcination. The washing can be water washing and / or alcohol washing, and the washing and removing template agent conditions include: the temperature can be 90-120°C, and the time can be 10-40 hours. Accordi

[0058] Example 1

[0059] This example is used to illustrate the supported catalyst provided by the present invention, its preparation method, and the method for preparing propylene from propane dehydrogenation

[0060] (1) Preparation of carrier

[0061] 1.5 grams of CTAB (hexadecyl trimethyl ammonium bromide) and 1.5 ml of polyethylene glycol octyl phenyl ether (Triton-X100) were added to 29.6 grams of 37 wt% concentrated hydrochloric acid and 75 grams In hydrochloric acid composed of water, mix and stir at 40°C until CTAB is completely dissolved; then add 4.35 g of ethyl orthosilicate to the above solution, stir at 40°C for 15 minutes, and stand at 40°C for 24 hours. After filtering, washing and drying, the original powder mesoporous material is obtained. The raw powder mesoporous material is calcined at 600° C. for 24 hours to remove the template agent, and spherical mesoporous material A1 is obtained.

[0062] The spherical mesoporous material A-1 was characterized by X-ray diffra

[0072] Example 2

[0073] This example is used to illustrate the supported catalyst provided by the present invention, its preparation method, and the method for preparing propylene from propane dehydrogenation

[0074] (1) Preparation of carrier

[0075] 1.125 grams of CTAB (hexadecyl trimethyl ammonium bromide) and 3.75 ml of polyethylene glycol octyl phenyl ether (Triton-X100) were added to 20.6 grams of 37 wt% concentrated hydrochloric acid and 62.2 grams In hydrochloric acid composed of water, mix and stir at 40°C until CTAB is completely dissolved; then add 4.35 g of ethyl orthosilicate to the above solution, stir at 40°C for 15 minutes to dissolve, and then stand at 40°C for 24 hour. After filtering, washing and drying, the original powder mesoporous material is obtained. The raw powdered mesoporous material is washed with ethanol under reflux conditions at 100°C for 24 hours to remove the template agent to obtain spherical mesoporous material A2.

[0076] Spherical mesoporous