Catalyst for catalyzing CO oxidation in smoke of cigarettes as well as preparation method and application of catalyst

A technology for catalyzing flue gas and catalysts, which can be used in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., and can solve the problems of high cost, low reserves, and harsh preparation conditions. , to achieve the effect of improving the quality of absorbing taste, improving the quality of absorbing taste and simple preparation process

Active Publication Date: 2014-06-25
CHINA TOBACCO FUJIAN IND +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although a lot of research work has been done on the reduction of CO content in cigarette smoke by catalytic oxidation, the catalytic materials currently used to reduce CO in cigarette smoke are mainly noble metal catalysts such as Au and Pd, which are expensive and have little reserves in nature. The harsh preparation conditions and other defects limit its wide application

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Measure 400 milliliters of distilled water into the beaker, and weigh 1.2 grams of La according to the stoichiometric ratio 2 o 3 and 3 grams of sodium carbonate precipitant were added to distilled water, heated to 40°C while stirring, and stirred for 60 minutes (including the heating process). Measure 22.5 milliliters of zinc nitrate solution (1mol / L), 7.5 milliliters of ferric nitrate solution (1mol / L) and 15 milliliters of manganese nitrate solution (1mol / L) and fully mix together, after 30 minutes, mix the above three components The mixture was added dropwise to sodium carbonate and La 2 o 3 in the mixed solution. Then add aluminum latex (aluminum latex prepared from 15 ml of aluminum nitrate), adjust pH=8, and react at 40° C. for 6 hours. Wash again 5 times with distilled water. Filter under reduced pressure, dry at 140°C for 6 hours, and roast at 600°C for 4h to obtain ZnO-Fe 2 o 3 -La 2 o 3 -MnO 2 -Al 2 o 3 = 3:1:1:2:2 catalyst.

Embodiment 2～5

[0018] Preparation method is identical with example 1, and manganese nitrate is changed into copper nitrate, nickel nitrate, magnesium nitrate and cobalt nitrate respectively. ZnO-Fe was prepared separately 2 o 3 -La 2 o 3 -CuO-Al 2 o 3 =3:1:1:2:2,

[0019] ZnO-Fe 2 o 3 -La 2 o 3 -NiO-Al 2 o 3 =3:1:1:2:2,

[0020] ZnO-Fe 2 o 3 -La 2 o 3 -MgO-Al 2 o 3 =3:1:1:2:2,

[0021] ZnO-Fe 2 o 3 -La 2 o 3 -CoO 2 -Al 2 o 3 =3:1:1:2:2. catalyst. The above-mentioned catalyst was added to shredded tobacco, and each cigarette contained 30 mg of the catalyst, and these sample cigarettes containing the catalyst were analyzed by a smoking machine to determine the CO content in the cigarette smoke.

[0022] The test result of table one embodiment in cigarette

[0023] sample example

Embodiment 6

[0025] Measure 400 milliliters of distilled water into the beaker, and weigh 1.2 grams of La according to the stoichiometric ratio 2 o 3 and 3 grams of sodium carbonate precipitant were added to distilled water, heated to 40°C while stirring, and stirred for 120 minutes (including the heating process). Measure 22.5 milliliters of zinc nitrate solution (1mol / L), 7.5 milliliters of ferric nitrate solution (1mol / L) and 7.5 milliliters of copper nitrate solution (1mol / L) and fully stir, evenly mix together, after 30 minutes, above-mentioned three The mixture of the two components was added dropwise to sodium carbonate and La 2 o 3 in the mixed solution. Then add aluminum latex (aluminum latex prepared from 22.5 ml of aluminum nitrate), adjust pH=9, and react at 40° C. for 3 hours. Wash again 5 times with distilled water. Filter under reduced pressure, dry at 120°C for 3 hours, and roast at 300°C for 2 hours to obtain ZnO-Fe 2 o 3 -La 2 o 3-CuO-Al 2 o 3 = 3:1:1:1:3 catal...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the field of harm and tar reduction of cigarettes and relates to a catalyst for catalyzing CO oxidation in smoke of the cigarettes as well as a preparation method and an application of the catalyst. The general formula of the catalyst provided by the invention is ZnO-Fe2O3-La2O3-M-Al2O3, wherein the M is one or more metal oxides selected from oxides of Co, Ni, Mn and Mg. According to the invention, the nanometer-composite metal-oxide catalyst prepared by using a reverse-adding coprecipitation method is used in the cigarettes to ensure that the carbon monoxide release amount in the cigarette smoke can be effectively reduced by 5-30%, the harm of smoking to human body is reduced and the safety and the comfortableness of smoking process are increased. The catalyst provided by the invention is simple in preparation process, little in energy consumption and low in cost.

Description

technical field [0001] The invention belongs to the field of cigarette harm reduction and tar reduction, and relates to a catalytic material for reducing carbon monoxide emission in cigarette smoke, a preparation method and application thereof. Background technique [0002] As we all know, carbon monoxide is not only an important industrial energy and raw material, but also one of the important pollutants in many industrial environments and indoor environments. In the living and working environment, the existence of a small amount of carbon monoxide seriously affects human health. Cigarettes will produce a large amount of carbon monoxide during the burning process, and the chemical affinity between carbon monoxide and human hemoglobin is about 200 times that of oxygen. Oxygen can induce high blood pressure, cardiac arrhythmia and even death. As the society pays more and more attention to smoking and health issues, consumers are more aware of smoking safety and environmental...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/83B01J23/889A24B15/28
Inventor 杨意泉陈国星蓝洪桥范坚强李巧灵
Owner CHINA TOBACCO FUJIAN IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap