Hierarchically porous titanium silicalite molecular sieve coating, preparation method and application thereof
A technology of titanium-silicon molecular sieves and graded pores, which is applied in the direction of molecular sieve catalysts, oxime preparation, chemical instruments and methods, etc., can solve the problems of catalyst sintering deactivation, catalyst easy coking, low thermal conductivity, etc., and achieve the effect of improving production efficiency
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[0030] Example 1
[0031] In the present embodiment, it is a carrier with honeycomb cordierite as a carrier: 1 mm, and 90% of the total volume fraction of the cordierite carrier straight hole.
[0032] The preparation method of the hierarchy TS-1 molecular sieve coating is as follows: (1) 20 grams of TS-1 molecular sieves were added to 90 grams of deionized water, and 20 grams of silica sol, 2 grams of carboxymethylcellulose were added to coat. material. (2) Honeycomb cordierine ceramics of 20 mm and height of 20 mm is coated with 3 times in the above coated slurry for 12 hours. (3) The above materials were treated in a vapor of tetrapropropylammonium hydroxide, and 180 degrees were treated for 48 hours. (4) After 12 hours of treatment after tetrapropyl hydroxide vapor treatment for 12 hours, 550 degrees was taken for 6 hours. Thus, the titanium silicon molecular sieve coating coating of the active primitive based on the hollow TS-1 molecule is obtained.
[0033]The technical para...
Example Embodiment
[0036] Example 2
[0037] In this embodiment, the stainless steel wire is supported by a carrier: 100 microns of aperture, and 95% of the total volume fraction of the material of the pore.
[0038] The preparation method of the hierarchy TS-1 molecular sieve coating is as follows: (1) 20 grams of TS-1 molecular sieve is added to 90 grams of deionized water, and 20 grams of titanium solubol, 2 grams of carboxymethylcellulose is used to coat the slurry. . (2) The thickness of 5 mm and a stainless steel wire diameter of 20 mm was coated with 1 time in the coated slurry, and treated in a 100 degree drying tank for 12 hours, 550 degrees for 6 hours. (3) The above materials were treated at 160 degrees for 12 hours in a mixture of 0.5 mole / liter of tetrahydroxylammonium hydroxide and 0.1 mol / liter sodium hydroxide. (4) After 12 hours of treatment after the tetrapropyl hydroxide solution was treated at 100 degrees, baked for 6 hours at 550 degrees. Thus, the molecular sieve coating of...
Example Embodiment
[0042] Example 3
[0043] In this embodiment, the foamite ceramic is carried as a carrier: an aperture of 2 mm and 80% of the total volume fraction of the material of the pore.
[0044] The preparation method of the hierarchy TS-1 titanium silicon molecular sieve coating is as follows: (1) 20 grams of TS-1 molecular sieve was added to 80 grams of deionized water, add 30 grams of silica sol, 5 grams of two Alcohol is made into a coated slurry. (2) After 20 mm, a height of 20 mm is coated with 5 times in the coated slurry, and it was treated in a 100 degree drying tank for 12 hours and baked for 6 hours at 550 degrees. (3) The above materials were treated in a mixture of 0.2 mol / liter tetrahydroxylammonium hydroxide and 0.1 mole / liter sodium hydroxide, 160 degrees for 12 hours. (4) After 12 hours of treatment after the tetrapropyl hydroxide solution was treated at 100 degrees, baked for 6 hours at 550 degrees. Thus, an open mesh structure TS-1 titanium silicon molecular sieve co...
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