A kind of preparation method of hydrogenation catalyst composition
A technology of hydrogenation catalyst and composition, applied in the direction of chemical instruments and methods, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., can solve the problems affecting the appearance, strength and final catalyst High specific surface area, increased catalyst wear and other issues, to achieve the effect of improving hydrogen absorption and dehydrogenation capacity and speed, reducing catalyst wear, and increasing catalyst strength
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[0018] The invention provides the preparation method of catalyst composition, a kind of specific preparation process is as follows:
[0019] (1) Preparation of W and Ni composite oxide precursors by co-precipitation method
[0020] Prepare a salt solution containing W and Ni according to the ratio of the catalyst components. The nickel-containing salt can be one or more of nickel sulfate, nickel nitrate, nickel chloride, basic nickel carbonate, nickel oxalate, etc., and the tungsten-containing salt It can be one or more of ammonium metatungstate, sodium tungstate, etc., and additives such as Si, P, Ti, B, Zr, Mg, etc. can be introduced into the mixed solution according to the catalyst requirements, preferably Si and / or P, silicon can be one or more of water glass, silica sol, etc., phosphorus can be one or more of phosphoric acid, phosphorous acid, ammonium phosphate, ammonium hydrogen phosphate, ammonium dihydrogen phosphate, etc.
[0021] Add an appropriate amount of clean ...
Embodiment 1
[0027] Add 500ml of clean water into a container A, add 48g of ammonium metatungstate, 32g of nickel chloride, and 3.5g of ammonium dihydrogen phosphate into it and stir to dissolve;
[0028] Add 300ml of clean water into a container B, add 57g of aluminum chloride into it and stir to dissolve;
[0029] Prepare the concentration in a container C with SiO 2 (weight) 100ml of 2.2% dilute water glass solution;
[0030] Add 500ml of clean water into the reaction tank, add 2g of polyethylene glycol with a molecular weight of 6000, stir and heat up to 50°C;
[0031] Add the aluminum chloride solution in container B to container A under stirring, then drop the dilute water glass solution in container C into container A under stirring, adjust the total volume of the solution to 1000ml with clean water, Get metal W, Ni and Al 2 o 3 ,P 2 o 5 , SiO 2 Saline solutions of precursors;
[0032] Add the above-prepared salt solution and 15wt% ammonia solution into the reaction tank in ...
Embodiment 2
[0037] The whole preparation process of the catalyst was the same as that in Example 1, wherein 2 g of polyethylene glycol with a molecular weight of 6000 was added to the clean water of the reaction tank during the catalyst preparation process, and the gelling temperature was 50°C. The salt solution was prepared by adding 47g of ammonium metatungstate, 29g of nickel chloride, and 80g of aluminum chloride, without adding ammonium dihydrogen phosphate and dilute water glass solution, and adding 16.2g of molybdenum trioxide to obtain the catalyst composition B of the present invention.
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