Silicon-aluminum molecular sieve, preparation method and applications thereof, and cyclic ketone conversion method
A silicon-alumina molecular sieve and cyclic ketone technology is applied in the preparation of silicon-alumina molecular sieve, the application of silicon-alumina molecular sieve, and the field of cyclic ketone conversion, which can solve the problems of occupying land resources and inventory space, and achieve good catalytic effect.
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[0027] Therefore, as mentioned above, the present invention provides a method for preparing the silico-alumina molecular sieve of the present invention, which includes:
[0028] (1) The unloading agent is mixed with an acid solution, and the obtained slurry is subjected to the first heat treatment to separate and obtain a first solid, wherein the unloading agent is the unloading of a reaction device using titanium silicate as the active component of the catalyst. Dispense
[0029] (2) The aluminum source and the alkali source are mixed in the presence of an aqueous solvent to obtain a mixed solution, and the mixed solution is mixed with the first solid and then subjected to a second heat treatment.
[0030] In the present invention, the unloading agent of the reaction device using titanium-silicon molecular sieve as the active component of the catalyst may be the unloading agent discharged from various devices that use titanium-silicon molecular sieve as the active component of the c...
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[0106] Example 1
[0107] This example illustrates the method and product provided by the present invention.
[0108] At normal temperature (20°C, the remaining comparative examples are the same as the examples) and normal pressure (0.1MPa, the remaining comparative examples are the same as the examples), first combine the deactivated cyclohexanone oximation catalyst SH-2 with 1mol / L hydrochloric acid The aqueous solution is mixed and beaten, and then the mixed slurry is mixed and stirred for 12h at 80°C; the solid is obtained after solid-liquid separation, and the aluminum source aluminum sulfate and sodium hydroxide aqueous solution (pH 12) are mixed to obtain a mixed liquid. The solid and mixed liquid After mixing, put it into a stainless steel sealed reactor and treat it at 170°C for 12h. The mass composition of the material is the deactivated cyclohexanone oximation catalyst: aluminum source: acid: alkali: water = 100:1:10:5:250 , The deactivated cyclohexanone oximation catal...
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[0115] Example 2
[0116] This example illustrates the method and product provided by the present invention.
[0117] Under normal temperature and pressure, first mix the deactivated cyclohexanone oximation catalyst SH-3 with a 5mol / L hydrochloric acid solution to make a slurry, and then mix and stir the mixed slurry at 60°C for 1 hour; after solid-liquid separation, a solid is obtained. The aluminum source aluminum sol (content is 20% by weight) and tetrapropylammonium hydroxide aqueous solution (pH 10) are mixed to obtain a mixed solution. After mixing the solid and the mixed solution, they are placed in a stainless steel sealed reactor and treated at 150°C for 12 hours , Where the mass composition of the material is the deactivated cyclohexanone oximation catalyst: aluminum source: acid: alkali: water = 100:0.5:15:15:200, and the deactivated cyclohexanone oximation catalyst is SiO 2 Calculated by H + Based on OH - meter. Then, the product was recovered according to the method o...
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