Porous composite catalyst, preparation method and application thereof
A catalyst and composite technology, which is applied in the field of porous composite catalyst and its preparation, can solve the problems of poor catalyst stability, poor product selectivity, complicated catalyst preparation steps, etc., and achieves improved pore content, activity and stability, and improved service life. , the effect of increasing the specific surface area
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Embodiment 1
[0047] After uniformly mixing 100 grams of boehmite and 25 grams of polyethylene glycol in 200 grams of water, aging treatment was carried out at a temperature of 120° C. for 15 hours to prepare precursor A; 13.6 grams of platinum chloride (equivalent to After uniform mixing of 10g of platinum), 12.7g of manganese nitrate (equivalent to 5g of manganese oxide) and the above-mentioned precursor A, the aging treatment was performed again at a temperature of 160°C for 20 hours to obtain a precursor B, and then the above-mentioned precursor B is dried at a temperature of 120°C for 20 hours; then calcined at a temperature of 550°C for 10 hours; the precursor C is obtained; the above precursor C is reduced at a temperature of 600°C for After 5 hours, the porous composite catalyst can be obtained. The preparation process conditions are shown in Table 1, and the physical properties of the catalyst are shown in Table 2.
[0048] The catalyst is used for Fischer-Tropsch synthesis, the re...
Embodiment 2～5
[0052] According to the synthesis steps described in Example 1, the types and quality of the inert component precursor, the active component precursor and the surfactant are changed, and the preparation conditions are adjusted to obtain the porous composite catalyst of the present invention. The preparation process conditions are as follows: Table 1, the physical properties of the catalyst are shown in Table 2.
[0053] The catalysts were used for Fischer-Tropsch synthesis, synthesis gas methanation and methane reforming reactions respectively, the reaction conditions were the same as in Example 1, and the catalytic properties were shown in Table 2.
Embodiment 6
[0055] After uniformly mixing 98 grams of boehmite, 2 grams of magnesium oxide and 25 grams of polyethylene glycol in 200 grams of water, aging treatment was carried out at a temperature of 120 °C for 15 hours to prepare precursor A; 13.6 grams Platinum chloride (equivalent to 10g of platinum), 12.7 grams of manganese nitrate (equivalent to 5g of manganese oxide) and the above-mentioned precursor A were uniformly mixed, and then subjected to aging treatment again at a temperature of 160°C for 20 hours to obtain the precursor B. Subsequently, the above-mentioned precursor B was dried at a temperature of 120°C for 20 hours; then calcined at a temperature of 550°C for 10 hours; the precursor C was obtained; the above-mentioned precursor C was subjected to reduction treatment at a temperature of The porous composite catalyst can be obtained at 600°C for 5 hours, and the preparation process conditions are shown in Table 1.
[0056] The catalyst is used for Fischer-Tropsch synthesis...
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