Multi-component compound catalyst and preparation method thereof
A composite and multi-component technology, applied in the direction of molecular sieve catalysts, preparation of liquid hydrocarbon mixtures, physical/chemical process catalysts, etc., can solve the problems of poor catalyst stability, poor product selectivity, cumbersome catalyst preparation steps, etc., and achieve structural stability , increase the pore content, and the effect of large interaction force
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Embodiment 1
[0049] After uniformly mixing 100 grams of boehmite and 25 grams of polyethylene glycol in 200 grams of water, aging treatment was performed at a temperature of 120° C. for 15 hours to obtain a precursor A;
[0050] After uniformly mixing the above-mentioned precursor A with 13.6 grams of platinum chloride (equivalent to 10 g of platinum) and 5 grams of molecular sieve, aging treatment was performed again at a temperature of 160° C. for 20 hours to obtain a precursor B;
[0051] The above precursor B is dried at a temperature of 120°C for 20 hours; then calcined at a temperature of 550°C for 10 hours to obtain a precursor C;
[0052] The above precursor C is subjected to reduction treatment at a temperature of 600°C for 5 hours to obtain a multi-component composite catalyst. The preparation process conditions are shown in Table 1. The catalyst grain size is 500nm and the average pore size is 84nm. More specifically The physical characteristics are shown in Table 2.
[0053] T...
Embodiment 2～8
[0057] According to the synthesis steps described in Example 1, changing the type and quality of the inert component precursor, the active component precursor and the surfactant, and adjusting the preparation conditions, the multi-component composite catalyst of the present invention can be synthesized, and the preparation process The conditions are shown in Table 1, and the physical properties of the catalyst are shown in Table 2.
[0058] The catalysts were used for Fischer-Tropsch synthesis, synthesis gas methanation and alkane reforming reactions respectively, the reaction conditions were the same as in Example 1, and the catalytic performance was shown in Table 2.
Embodiment 9
[0060] 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 obtain a precursor A;
[0061] After mixing the above precursor A with 13.6 grams of platinum chloride (equivalent to 10 g of platinum), 13.7 grams of ZSM-5 molecular sieve and uniformly, aging treatment was carried out again at a temperature of 160 ° C for 20 hours to obtain a precursor B;
[0062] The above precursor B is dried at a temperature of 120°C for 20 hours; then calcined at a temperature of 550°C for 10 hours to obtain a precursor C;
[0063] The above precursor C was subjected to reduction treatment at a temperature of 600°C for 5 hours to obtain a multi-component composite catalyst. The preparation process conditions are shown in Table 1, and the physical properties of the catalyst are shown in Table 2.
[0064] The catalyst is used for Fischer-Tropsch ...
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