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Catalyst for reducing CO release guantity in main flow smove of cigarette, its preparation method and application

A cigarette mainstream smoke, carbon monoxide technology, applied in the field of tobacco

Inactive Publication Date: 2003-12-10
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To sum up, there is currently no cigarette product that uses catalytic materials to effectively reduce carbon monoxide in cigarette smoke in the industry.

Method used

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  • Catalyst for reducing CO release guantity in main flow smove of cigarette, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh 5.2 mg of AuCl according to the weight ratio of Au, Pt, Pd, Ni, Fe, Cu 3 ·HCl·4H 2 O, 5.3 mg H 2 PtCl 6 , 8.3 mg PdCl 2 , 4.630 g Ni(NO 3 ) 2 ·6H2 O, 0.245 g Fe(NO 3 ) 3 9H 2 O and 0.152 g Cu(NO 3 ) 2 ·3H 2 O is contained in an appropriate amount of distilled water, then 100 grams of aluminum oxide is added, and the pH value is adjusted to 7 with 10% anhydrous sodium carbonate. After standing for 4 hours, filter, wash, and dry, and roast at 400 ° C for 6 hours. After natural cooling, Press the tablets, crush and sieve to 40-70 mesh for later use. The above catalyst is analyzed by a transmission electron microscope, and the diameter of the active component on the carrier is dispersed on a nanometer scale, and the particle size is between 3-5 nanometers. See figure 1 .

[0032] Take 200 mg of catalyst and put it into the reactor, feed the reaction mixture gas, and react under different reaction temperature and humidity, the space velocity is 60000h -1...

Embodiment 2

[0041] Weigh 4.5 mg of AuCl according to the weight ratio of Au, Pt, Pd, Co, Fe, Cu, Zn 3 ·HCl·4H 2 O, 1.3 mg H 2 PtCl 6 , 8.3 mg PdCl 2 , 0.612 g Fe(NO 3 ) 3 9H 2 O, 3.184 g Zn(NO 3 ) 2 ·6H 2 O, and 0.190 g Cu(NO 3 ) 2 ·3H 2 O is dissolved in an appropriate amount of distilled water, then add 100 grams of alumina+silica (1:1), adjust the pH value to 7.1 with 10% anhydrous sodium carbonate, filter, wash, and dry after standing for 4 hours, and 400 Roast at ℃ for 6 hours, after natural cooling, press into tablets, crush and sieve to 40-70 mesh for later use. The above catalyst is analyzed by a transmission electron microscope, and the diameter of the active component on the carrier is dispersed on a nanometer scale, and the particle size is between 3-5 nanometers. The above-mentioned catalyst was used to process the A+B (composite) filter stick in the previous content, and the cigarette was plugged, and the carbon monoxide content test in the mainstream smoke was c...

Embodiment 3

[0048] Weigh 5.2 mg of AuCl according to the weight ratio of Au, Pt, Pd, Fe, Cu 3 ·HCl·4H 2 O, 0.6 mg H 2 PtCl 6 , 2.3 mg PdCl 2 , 0.245 g Fe(NO 3 ) 3 9H 2 O and 0.152 g Cu(NO 3 ) 2 ·3H 2 O is contained in an appropriate amount of distilled water, then 100 grams of alumina is added, and the pH value is adjusted to 6.9 with 10% anhydrous sodium carbonate. After standing for 4 hours, filter, wash, and dry, and roast at 200 ° C for 6 hours. After natural cooling, Press the tablets, crush and sieve to 40-70 mesh for later use. Take 200 mg of catalyst and put it into the reactor, feed the reaction mixture gas, and react under different reaction temperature and humidity, the space velocity is 60000h -1 , the concentration before and after the reaction was detected by gas chromatography, and the results are shown in Table 6.

[0049] Table 6. Effect of Catalyst on Catalytic Elimination of Carbon Monoxide Relative Humidity (%) Conversion (%)

[0050] Temperature -20°C 0°...

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Abstract

The general formula of the catalyst is Au(a) Pt(b) Pd(c) Ni(d) Co (e) Fe(f) Cu(g) Zn(h) Ti(i) O(j) / carrier, in which a is 0.05-3.0 wt%, b is 0.05-3.0 wt%, c is 0.05-3.0 wt%, d is 0.0-20.0 wt%, e is 0.0-45.0 wt%, f is 5.0-40.0 wt%, g is 3.0-30.0 wt%, h is 0.0-75.0 wt%, i is 0.0-70.0 wt% and j is the rest. The active components of the catalyst and adjuvant are distributed on the carrier in nano size. Said invention can be used in the cigarette, and can be used for reducing CO release amount in the main flow smoke by 20-45%.

Description

technical field [0001] The invention belongs to the field of tobacco. Specifically, the invention particularly relates to a catalyst for reducing the emission of carbon monoxide in mainstream smoke of cigarettes, a preparation method and application thereof. Background technique [0002] Carbon monoxide is a gas harmful to health and one of the main harmful components in cigarette smoke. During the burning process of cigarettes, a large amount of carbon monoxide will be produced, and carbon monoxide is easy to combine with the hemoglobin in the human body, resulting in a decrease in blood oxygen delivery, which is harmful to the human body. At present, the governments of various countries are very concerned about smoking and health issues. For example, the European Union has clearly stipulated that in 2004, its marketed cigarette products must be lower than the requirements of "tar 10mg / stick, nicotine 1mg / stick, and carbon monoxide 10mg / stick". Therefore, it is of great pr...

Claims

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Application Information

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IPC IPC(8): A24D3/00B01D53/62B01D53/86B01J23/89
Inventor 吕功煊赵明月刘建福杨宝军聂聪李克
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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