Catalyst carrier, catalyst, preparation method and application
A catalyst support and reaction technology, applied in the direction of catalyst activation/preparation, catalyst support, heterogeneous catalyst chemical elements, etc., can solve the problems of poor selectivity, achieve the effect of improving selectivity and wide application range
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Embodiment 1
[0037] Present embodiment provides a kind of catalyst, and its preparation method is as follows:
[0038] Preparation of catalyst support:
[0039] 0.81g molybdic acid is added in the aqueous solution of trimethylamine of 100mL 1.0mol / L, obtains the aqueous solution of trimethylamine molybdate; Aqueous solution of alkaline precipitant;
[0040] Dissolve 37.51g of aluminum nitrate in 1L of water to obtain an aqueous solution of aluminum nitrate;
[0041] Add the above-mentioned aqueous solution of the alkaline precipitant containing trimethylammonium molybdate into the aluminum nitrate aqueous solution, and after co-precipitation reaction at a relative pressure of 0.6MPa and 40°C for 2h, then aging at a relative pressure of 0.4MPa and 40°C for 2h; filter, The precipitate was washed with deionized water; dried at 120°C for 4 hours, extruded and calcined at 650°C for 4 hours to obtain the catalyst carrier.
[0042] Catalyst preparation:
[0043] Prepare 95 mL of aqueous nicke...
Embodiment 2
[0047] Present embodiment provides a kind of catalyst, and its preparation method is as follows:
[0048] Preparation of catalyst support:
[0049] 0.41g molybdic acid is added in the aqueous solution of trimethylamine of 84mL 1.5mol / L, promptly obtains the aqueous solution of molybdic acid trimethylamine salt; Aqueous solution of alkaline precipitant;
[0050] Dissolve 37.51g of aluminum nitrate in 800mL of water to obtain an aqueous solution of aluminum nitrate;
[0051] Add the aqueous solution of the alkaline precipitating agent containing trimethylammonium molybdate salt into the aluminum nitrate aqueous solution, and after the co-precipitation reaction at a relative pressure of 0 MPa and 50 ° C for 1 h, aging at a relative pressure of 0.6 MPa and 80 ° C for 6 h; filter and use The precipitate was washed with ionized water; dried at 120°C for 4 hours, and then calcined at 600°C for 4 hours after ball forming to obtain the catalyst carrier.
[0052] Catalyst preparation...
Embodiment 3
[0057] Present embodiment provides a kind of catalyst, and its preparation method is as follows:
[0058] Preparation of catalyst support:
[0059] 0.082g molybdic acid is added in the aqueous solution of trimethylamine of 180mL 0.5mol / L, promptly obtains the aqueous solution of molybdic acid trimethylamine salt; Then continue to add 12.4g sodium hydroxide, obtain the basic precipitating agent containing molybdic acid trimethylamine salt aqueous solution;
[0060] Dissolve 37.51g of aluminum nitrate in 900mL of water to obtain an aqueous solution of aluminum nitrate;
[0061] Add the above-mentioned alkaline precipitant aqueous solution containing trimethylammonium molybdate into the aluminum nitrate aqueous solution, and after a co-precipitation reaction at a relative pressure of 0.4MPa and 80°C for 1.5h, then age at a relative pressure of 0MPa and 60°C for 4h; filter and use The precipitate was washed with deionized water; dried at 120°C for 4 hours, and then calcined at 630...
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