High-throughput production method for prolonging service life of poly-acidic-group type Fischer-tropsch composite catalyst
A technology of composite catalyst and service life, which is applied in the direction of catalyst activation/preparation, preparation of liquid hydrocarbon mixture, catalyst protection, etc. It can solve the problems of low added value, achieve moderate pore size, not easy to agglomerate and loss, and save production costs.
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[0027] The high-throughput preparation method of the present invention for extending the service life of the polyacid-based Fischer-Tropsch composite catalyst includes the following steps:
[0028] Step 1: The polyacid with a mass fraction of 1-90% and a Fischer-Tropsch synthesis catalyst with a mass fraction of 10-99% are combined to form a polyacid-based Fischer-Tropsch synthesis catalyst through hydrothermal compounding. The polyacid catalyst is any one or a combination of any of Keggin type polyacid salt, Dawson type polyacid salt and Lindqvist type polyacid salt. The general formula of the Keggin type polyacid salt is: A m H n [XM 12 O 40 ] (A = Li, Na, K, Cs, Mg, Ga, Al, Ce; X = Si, Ge, P, As, B; M = W, Mo; The general formula of Dawson type polyacid salt is : A m H n [X 2 M 18 O 62 ] (A = Li, Na, K, Cs; X = P, As; M = W, Mo; m = 0-6; n = 0-6); The general formula of the Lindqvist type polyacid salt is: A m H n [X x M y O 19 ] (A = Li, Na, K, Cs; X&M = V, Nb, W, Mo, Ta; x +...
Example Embodiment
[0041] Example one:
[0042] In this embodiment, see figure 2 As shown in Table 1, a high-throughput preparation method for prolonging the service life of a polyacid-based Fischer-Tropsch synthesis catalyst includes the following steps:
[0043] Add 5 grams of polyacid catalyst H 3 PW 12 O 40 Pour into a beaker containing 10 grams of deionized water and stir magnetically for 30 minutes until completely dissolved. Put 5 grams of Fischer-Tropsch synthesis catalyst 10Co / Al 2 O 3 Put it into a beaker and stir mechanically until the solution containing the polyacid is impregnated into the pores of the Fischer-Tropsch synthesis catalyst carrier. Keep immersing for 6 hours, stirring every half an hour during this period to ensure full immersion. Then the catalyst in the beaker was transferred to a 25ml polytetrafluoroethylene lined autoclave, heated at 150°C for 72 hours, cooled naturally, cooled and dried, and calcined at 200°C for 4 hours to obtain a polyacid-based Fischer-Tropsch com...
Example Embodiment
[0045] Embodiment two:
[0046] Add 4 grams of polyacid catalyst H 4 SiW 12 O 40 Pour into a beaker containing 10 grams of deionized water, heat and stir for 5 minutes until completely dissolved. Add 6 grams of Fischer-Tropsch synthesis catalyst 5Ru / Al 2 O 3 Put it in a beaker and stir until the solution containing polyacid is immersed in the pores of the Fischer-Tropsch synthesis catalyst carrier. Keep immersing for 10 hours, stirring every hour during this period to ensure full immersion. Then the catalyst in the beaker was transferred to a 25ml polytetrafluoroethylene liner autoclave, heated at 180°C for 96 hours, cooled naturally, cooled and dried, and calcined at 300°C for 2 hours to obtain a composite catalyst. A solution of TEOS and 1M dilute hydrochloric acid was prepared at a molar ratio of 1:3, and the solution was put into a high flux hydrothermal reactor at a ratio of 1:2 with a polyacid-based Fischer-Tropsch synthesis catalyst, and heated to 150 under autogenous pre...
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