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Preparation method of photocatalyst for reducing content of carbon monoxide in cigarette smoke

A carbon monoxide and photocatalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, separation methods, etc., can solve the problem of not being used to reduce harmful substances in cigarette smoke, and achieve high-pressure and vacuum activation equipment. Simple and stable in nature , the effect of mild reaction conditions

Pending Publication Date: 2022-07-29
重庆深盟新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the novel and efficient TiO 2 Catalysts are not used to reduce harmful substances in cigarette smoke

Method used

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  • Preparation method of photocatalyst for reducing content of carbon monoxide in cigarette smoke
  • Preparation method of photocatalyst for reducing content of carbon monoxide in cigarette smoke
  • Preparation method of photocatalyst for reducing content of carbon monoxide in cigarette smoke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] see figure 1 , A preparation method of a photocatalyst for reducing carbon monoxide content in cigarette smoke, the specific steps are as follows: (1) 20% ethyl titanate is added dropwise to an ethanol-water solution with a pH value of 1, and a high-pressure reactor at 150 ° C is added dropwise. After the reaction was carried out for 4 h, the product was washed, filtered, and dried at 70 °C to obtain a white powder, which was then placed in a vacuum tube furnace (N 2 Atmosphere) 450 ℃ activation for 2h; (2) take 0.1g TiH 2 in 30ml H 2 O 2 Stir in medium to obtain golden yellow sol; (1) (2) product is rotated and compounded to obtain blue-black Ti 3+ Doped C-TiO 2 catalyst of light.

[0034] After testing the Ti of this embodiment 3+ Doped C-TiO 2 The photocatalyst can promote the conversion of CO in smog with a conversion rate of 3%.

[0035] Table 1: Effects of self-doped nano-TiO2 catalysts on CO oxidation in cigarette smoke:

[0036] control ciga...

Embodiment 2

[0038] see figure 1 , A preparation method of a photocatalyst for reducing carbon monoxide content in cigarette smoke, the specific steps are as follows: (1) dropwise add 10% ethyl titanate to an ethanol-water solution with a pH value of 2, and heat a high-pressure reactor at 220° C. After the reaction was carried out for 3 h, the product was washed, filtered, and dried at 70 °C to obtain a white powder, which was then placed in a vacuum tube furnace (N 2 Atmosphere) 400 ℃ activation for 2.5h; (2) take 0.3g TiH 2 in 40ml H 2 O 2 Stir in medium to obtain golden yellow sol; (1) (2) product is rotated and compounded to obtain blue-black Ti 3+ Doped C-TiO 2 catalyst of light.

[0039]After testing the Ti of this embodiment 3+ Doped C-TiO 2 The photocatalyst can promote the conversion of CO in smog with a conversion rate of 6%.

[0040] Table 2: Effects of doped nano-titania catalysts on CO oxidation in cigarette smoke:

[0041]

[0042]

Embodiment 3

[0044] see figure 1 , A preparation method of a photocatalyst for reducing carbon monoxide content in cigarette smoke, the specific steps are as follows: (1) 15% ethyl titanate is added dropwise to an ethanol-water solution with a pH value of 5, and a high-pressure reactor at 250 ° C is added dropwise. After the reaction was carried out for 4 h, the product was washed, filtered, and dried at 70 °C to obtain a white powder, which was then placed in a vacuum tube furnace (N 2 Atmosphere) 500 ℃ activation for 3h; (2) take 0.5g TiH 2 in 40ml H 2 O 2 Stir in medium to obtain golden yellow sol; (1) (2) product is rotated and compounded to obtain blue-black Ti 3+ Doped C-TiO 2 catalyst of light.

[0045] After testing the Ti of this embodiment 3+ Doped C-TiO 2 The photocatalyst can promote the conversion of CO in smog with a conversion rate of 1%.

[0046] Table 3: Effects of self-doped nano-titania catalysts on CO oxidation in cigarette smoke:

[0047] control c...

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Abstract

The invention belongs to the technical field of cigarette material preparation, and particularly relates to a preparation method of a photocatalyst for reducing the content of carbon monoxide in cigarette smoke. The preparation method of the photocatalyst provided by the invention comprises the following specific steps: adjusting the pH value through an acid reagent, dropwise adding a titanium precursor into an ethanol-water mixed solvent, and stirring to obtain a turbid liquid; transferring the turbid liquid into a high-pressure reaction kettle to react, then cooling to room temperature, washing and drying to obtain white powder, and then putting the white powder into a low-temperature vacuum tube furnace to be activated in an inert atmosphere to obtain a C-TiO2 catalyst; the preparation method comprises the following steps: stirring TiH2 in an H2O2 solution, and carrying out turbid liquid reaction to obtain golden yellow sol; gradually adding the C-TiO2 catalyst into the golden yellow sol, and compounding the C-TiO2 catalyst and the golden yellow sol through rotary evaporation to obtain the photocatalyst. The preparation method has the advantages of simple raw materials, single product, easiness in separation and purification, convenience and controllability in operation and easiness in large-scale production.

Description

[0001] This application is a divisional application with an application date of May 15, 2017, an application number of 201710340541.2, and the title of the invention "A method for preparing a photocatalyst for reducing carbon monoxide content in cigarette smoke". technical field [0002] The invention belongs to the technical field of cigarette material preparation, and in particular relates to a preparation method of a photocatalyst for reducing carbon monoxide content in cigarette smoke. Background technique [0003] The smoke produced when cigarettes are lit contains a lot of harmful substances and carcinogens. Exposure of non-smokers to secondhand smoke can also lead to lung cancer, nasal irritation, and respiratory symptoms. Carbon monoxide is one of the most obvious pathogenic substances when cigarettes are lit. It is a colorless and odorless gas. At present, the limit of carbon monoxide in each cigarette smoke in my country is about 12 mg. It is well known that its aff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18B01D53/86B01D53/62
CPCB01D53/864B01J35/004B01D2255/20707B01D2255/702B01D2255/802B01D2257/502B01J21/18Y02A50/20
Inventor 汪远昊肖重阳
Owner 重庆深盟新材料科技有限公司
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