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.

Active Publication Date: 2016-10-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, valuable land resources and storage space are taken up, and the recovery and

Method used

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  • Silicon-aluminum molecular sieve, preparation method and applications thereof, and cyclic ketone conversion method
  • Silicon-aluminum molecular sieve, preparation method and applications thereof, and cyclic ketone conversion method
  • Silicon-aluminum molecular sieve, preparation method and applications thereof, and cyclic ketone conversion method

Examples

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Example Embodiment

[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...

Example Embodiment

[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...

Example Embodiment

[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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Abstract

The invention provides a silicon-aluminum molecular sieve, a preparation method and applications thereof. The silicon-aluminum molecular sieve comprises an aluminum element, a silicon element, and an oxygen element. The pore volume of the silicon-aluminum molecular sieve is 0.3 cm3/g or more. The total specific surface area is 200 m2/g or more, the external surface area is 30 m2/g or more, and the external surface area accounts for 10 to 55% of the total specific surface area. The benzene absorption amount is at least 65 mg for each gram of molecular sieve under following conditions: temperature: 25 DEG C, P/P0=0.10, and absorption time: 1 hour. Under N2 static absorption tests, the micro pore size distribution is in a range of 0.9 to 2.0 nm. The invention provides a cyclic ketone conversion method. The provided molecular sieve containing precious metals has a special physico-chemical structure, the benzene absorption amount is high, and the micro pore size distribution is in a range of 0.9 to 2.0 nm. The molecular sieve can achieve a better catalytic effect, when being applied to reactions that generate circular molecules (especially cyclic ketone molecules) or reactions that circular molecules (especially cyclic ketone molecules) participate in.

Description

technical field [0001] The invention relates to a silica-alumina molecular sieve and a preparation method of the silica-alumina molecular sieve, and also relates to the application of the silica-alumina molecular sieve and a method for converting cyclic ketones. Background technique [0002] Titanium-silicon molecular sieve is a molecular sieve whose skeleton is composed of silicon, titanium and oxygen elements. It has broad application prospects in petroleum refining and petrochemical industry. Among them, TS-1 molecular sieve is a new type of titanium-silicon molecular sieve with excellent catalytic selective oxidation performance formed by introducing transition metal element titanium into the molecular sieve framework with ZSM-5 structure. [0003] TS-1 not only has the catalytic oxidation of titanium, but also has the shape-selective effect and excellent stability of ZSM-5 molecular sieve, and has successfully realized industrial application in the process of preparing ...

Claims

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Application Information

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IPC IPC(8): C01B39/04
Inventor 林民史春风朱斌
Owner CHINA PETROLEUM & CHEM CORP
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