Preparation method of nano catalyst for selective adsorption of phenol in cigarette smoke
A nano-catalyst and cigarette smoke technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as high cost, difficult processing, and easy dusting
Active Publication Date: 2017-10-10
CHINA TOBACCO JIANGXI IND CO LTD
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Problems solved by technology
[0004] Among the above technologies, some use precious metals, which are costly; some use powder nanomaterials, which are easy to raise dust and difficult to process.
Method used
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Embodiment 1
[0025] Embodiment 1: in retort, add Cu(NO 3 ) 2 ·6H 2 O 80mol, Co(NO 3 ) 2 ·6H 2 O 320mol and 500 kg of deionized water, heated while stirring, heated to 80°C, added 42 kg of 40-80 mesh γ-Al 2 o 3 , after heat preservation and stirring for 24 hours, filter, and dry the obtained solid at 120°C. After drying, the solid absorbs the filtrate again and dry until the filtrate is completely absorbed. After drying, a solid material with constant weight is obtained. Sieve to get 40-80 mesh particles.
Embodiment 2
[0026] Embodiment 2: Except that the calcination temperature is 100° C., all the others are the same as Example 1.
Embodiment 3
[0027] Embodiment 3: Except that the calcination temperature is 200° C., all the others are the same as Example 1.
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Abstract
The invention discloses a method for preparing a nano-catalyst for selectively adsorbing phenol in cigarette smoke, belonging to the technical field of a method for preparing a nano-catalyst. Add copper nitrate and cobalt nitrate to deionized water, heat to 80-90°C, add mesoporous material, keep warm and stir for 24 hours, then filter, dry the filter cake at 70°C-150°C to constant weight, add filtrate to absorb again, filter , dry until the filtrate is completely absorbed; after drying, the material is calcined at 150°C-500°C for 2-6 hours, cooled to room temperature, and sieved to get 40-80 mesh particles; the copper nitrate, cobalt nitrate, mesoporous material The molar ratio is 1:1‑5:3‑8. By assembling copper nitrate and cobalt nitrate in mesoporous solids, the present invention can selectively catalyze conversion or adsorb and intercept harmful substances, and at the same time overcome the disadvantages of easy dusting, difficulty in processing and easy inhalation of human health due to the direct use of nano powders. .
Description
technical field [0001] The invention belongs to the technical field of a preparation method of a nanometer catalyst, in particular to the technical field of a nanometer catalyst used for removing or reducing harmful substances in tobacco. Background technique [0002] Nanoscience is an emerging science, nanotechnology is the leading technology in the 21st century, and nanomaterials are new materials in the 21st century. Due to its special structure, nanomaterials have many physical and chemical properties different from traditional materials and have a wide range of application prospects. An important field of application of nanomaterials is as catalysts. It is expected that nanoparticle catalysts may play a major role in catalytic reactions in the 21st century. Compared with ordinary catalysts, due to the increase of surface active sites and the increase of chemical reaction contact surface, the diffusion speed of gas through nanomaterials increases by tens of thousands o...
Claims
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IPC IPC(8): B01J23/75B01J35/10A24B15/28A24D3/16
Inventor 蔡继宝苏加坤谭明杰罗海涛张悠金方智勇郑傲
Owner CHINA TOBACCO JIANGXI IND CO LTD