Regular structure desulfurization catalyst, preparation method thereof, and method for desulfurization of sulfur-containing hydrocarbons
A technology of desulfurization catalyst and regular structure, which is applied in the field of desulfurization of sulfur-containing hydrocarbons. It can solve the problems of desulfurization activity and desulfurization stability, affect the implementation effect of desulfurization of sulfur-containing hydrocarbons, and reduce the octane number of gasoline products, so as to increase the stability of desulfurization. non-toxic, not easy to lose and aggregate, and improves the effect of octane number
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[0024]At the same time, the present invention also provides a method for preparing a desulfurization catalyst with a regular structure, which includes the following steps: S1, a precursor of an oxide of at least one metal selected from groups IIA and IIB and silicon oxide Binder precursors are mixed to prepare a matrix coating slurry; S2, coating the matrix coating slurry on a regular structure carrier, drying and firing to form a matrix coating on the inner surface and / or outer surface of the regular structure carrier layer to obtain a catalyst carrier; S3, contacting the catalyst carrier with a transition metal precursor solution, drying and roasting after contact to form a transition metal oxide on the substrate coating to obtain a catalyst precursor; S4, The catalyst precursor in NH 3 / H 2 Reduction treatment is carried out under the atmosphere to reduce the transition metal oxide to form transition metal nitride to obtain the regular structure desulfurization catalyst. ...
Embodiment 1
[0057] This example is used to illustrate the regular structure desulfurization catalyst and its preparation method of the present invention.
[0058] (1) Preparation of substrate coating slurry:
[0059] Mix 1.01kg of zinc oxide powder (produced by Beijing Chemical Plant, containing 1kg on a dry basis) and 1kg of deionized water, and wet ball mill to obtain a grinding slurry (particle size d 90 =8 μm); add 1.67kg water glass (produced by Sinopec Catalyst Qilu Branch Company, the modulus is 3.2, the average particle size is 30nm, containing 0.25kg silicon oxide) in the aforementioned grinding slurry, stir for 10min, add 500mL polyethylene glycol Solution (prepared based on the addition of 2 g of polyethylene glycol per 100 mL of water, wherein polyethylene glycol is produced by Aladdin Reagent Company, the degree of polymerization is 1700, analytically pure, the same below), stirred for 20 minutes to obtain a solid content of 30 wt. % matrix coating slurry;
[0060] (2) Prep...
Embodiment 2
[0069] This example is used to illustrate the regular structure desulfurization catalyst and its preparation method of the present invention.
[0070] (1) Preparation of substrate coating slurry:
[0071] 1.53kg of zinc oxide powder (produced by Beijing Chemical Plant, containing 1.5kg on a dry basis) and 1kg of deionized water are mixed uniformly, and wet ball milled to obtain a grinding slurry (particle size d 90= 8 μm); add 0.68kg of silica sol (produced by Sinopec Catalyst Qilu Branch, containing 0.17kg of silicon dioxide) to the aforementioned grinding slurry, stir for 10min, then wet mill for 5h with a ball mill, then add 375mL of polyethylene glycol solution (based on Prepared by adding 2 g of polyethylene glycol per 100 mL of water, wherein the polyethylene glycol is produced by Aladdin Reagent Company, the degree of polymerization is 1700, analytically pure, the same below), and stirred for 20 minutes to obtain a matrix with a solid content of 30% by weight coating s...
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