A nano-calcium carbonate catalyst coated with ag titanium dioxide nanoparticles and its preparation method and application

A nano-calcium carbonate and nano-particle technology, applied in physical/chemical process catalysts, chemical instruments and methods, applications, etc., can solve the problems of high carbonyl compound release, increase smoke irritation, and affect cigarette quality, etc. The process is simple and economical, the catalytic effect is remarkable, and the effect of reducing the content

Active Publication Date: 2017-04-19
CHINA TOBACCO ANHUI IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The carbonyl compound release of reconstituted tobacco was analyzed, and it was found that the carbonyl compound release of reconstituted tobacco was much higher than that of shredded tobacco, and the carbonyl compound of domestic reconstituted tobacco was much higher than that of products from foreign advanced enterprises. The application in cigarette formula would lead to the release of carbonyl compounds If the amount is too high, it will increase the irritation of smoke, affect the quality of cigarettes, and restrict its application to a certain extent.

Method used

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  • A nano-calcium carbonate catalyst coated with ag titanium dioxide nanoparticles and its preparation method and application
  • A nano-calcium carbonate catalyst coated with ag titanium dioxide nanoparticles and its preparation method and application
  • A nano-calcium carbonate catalyst coated with ag titanium dioxide nanoparticles and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The present embodiment prepares the nano-calcium carbonate catalyst that loads Ag titania nanoparticle coating as follows:

[0034] 1. Properly pulverize 10g of calcium oxide and add it to 30mL of water at 80°C, stir and react at a constant temperature for 1 hour, and then leave it to age for 12 hours to obtain milk of lime.

[0035] 2. NaCO 3 Block and dilute hydrochloric acid are added to the Kipp generator in proportion to control the reaction rate and obtain stable CO 2 airflow.

[0036] 3. Add milk of lime into the carbonation reactor, control the required reaction temperature to 40°C, feed carbon dioxide gas from the bottom of the reactor, stir at a certain speed, start the pH meter to track the entire reaction process, and wait until the reaction reaches the end (pH=7.0), pour out the clinker, wash with deionized water, and dry at 80° C. for 24 hours to obtain spindle-shaped nano-calcium carbonate particles.

[0037] 4. Mix 40 mL of absolute ethanol with 200 m...

Embodiment 2

[0047] The present embodiment prepares the nano-calcium carbonate catalyst that loads Ag titania nanoparticle coating as follows:

[0048] 1. Properly pulverize 10g of calcium oxide and add it to 40mL of water at 80°C, stir and react at a constant temperature for 1 hour, and then leave it to age for 24 hours to obtain milk of lime.

[0049] 2. NaCO 3 Block and dilute hydrochloric acid are added to the Kipp generator in proportion to control the reaction rate and obtain stable CO 2 airflow.

[0050] 3. Add milk of lime into the carbonation reactor, control the required reaction temperature to 35°C, inject carbon dioxide gas from the bottom of the reactor, stir at a certain speed, start the pH meter to track the entire reaction process, and wait until the reaction reaches the end (pH=7.0), pour out the clinker, wash with deionized water, and dry at 80° C. for 24 hours to obtain spindle-shaped nano-calcium carbonate particles.

[0051] 4. Mix 30 mL of absolute ethanol and 100 ...

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PUM

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Abstract

The invention discloses a nano calcium carbonate catalyst wrapped by Ag-loaded titanium dioxide nanoparticles as well as a preparation method and application of the nano calcium carbonate catalyst. The surfaces of spindle-shaped nano calcium carbonate particles are wrapped by Ag-loaded titanium dioxide nanoparticles. The catalyst can be added into paper-making process reconstituted tobaccos so as to be added into cigarettes containing the reconstituted tobaccos, so that the smoke reaction is catalyzed in cigarette igniting and smoking processes and the carbonyl compound content of the smoke can be reduced. According to the invention, the preparation process is simple, convenient and economical, and the prepared catalyst has a remarkable particle catalysis effect, is low in cost and is suitable for industrial application.

Description

technical field [0001] The invention relates to a catalyst capable of catalyzing flue gas reaction, in particular to a nano-calcium carbonate catalyst coated with Ag-loaded titanium dioxide nanoparticles, and belongs to the technical field of inorganic material composites and food. Background technique [0002] Reconstituted tobacco leaves, also known as tobacco flakes and homogeneous tobacco leaves, use waste materials (such as tobacco stems, stem sticks, tobacco dust, tobacco fragments, and some low-grade tobacco leaves, etc.) generated during cigarette production and processing. Methods (rolling method, thick paddle method, papermaking method) to make reconstituted tobacco leaves with properties close to or even better than natural tobacco leaves. In my country, the development and research of reconstituted tobacco started in 1990, decades later than abroad, so foreign flakes have been imported for a long time, and this situation continued until 2003. Domestic technology ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/232A24B15/28
Inventor 王莉张斌宁敏徐迎波王驰葛少林田振峰陈开波
Owner CHINA TOBACCO ANHUI IND CO LTD
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