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Metal composite molecular sieve with multiple channels and preparation method thereof

A metal composite and molecular sieve technology, applied in chemical instruments and methods, other chemical processes, tobacco, etc., can solve the problems of clogged channels, shedding, etc., achieve strong adsorption capacity, meet the processing technology, and have no effect on the sensory quality of cigarettes

Inactive Publication Date: 2015-09-23
CHONGQING CHINA TOBACCO IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing molecular sieves are prone to fall off or block the channels after loading metals. The present invention provides a metal composite molecular sieve with multiple channels and its preparation method

Method used

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  • Metal composite molecular sieve with multiple channels and preparation method thereof
  • Metal composite molecular sieve with multiple channels and preparation method thereof
  • Metal composite molecular sieve with multiple channels and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Weigh 25g of ferric nitrate dissolved in 150ml of ethanol solution, add 40g of silica gel with a particle size of 100-150 mesh, stir for a while until the ethanol evaporates, dry the powder in an oven at 60°C, and then place it in a tube furnace at 250°C , under a nitrogen atmosphere for 12 hours, the iron oxide infused composite material Fe x o y SiO 2 .

[0032] Composite Fe infused with iron oxide x o y SiO 2 Add to NaOH, TPAOH, water (molar ratio: 10NaOH:36TPAOH:4200H 2 O) In a uniformly mixed solution, stir at room temperature for 2 hours, put it into a hydrothermal reaction kettle, react at 180°C for 24 hours, take it out, cool it, wash it, dry it, and finally calcinate it in a muffle furnace at 550°C for 6 hours. The specific surface area obtained is 310.5m 2 / g, bulk molecular sieve material 1 with various channels modified by iron oxide, its scanned picture is as follows figure 1 shown. figure 1 The overall block molecular sieve material is composed of...

Embodiment 2

[0038] Weigh 3.6g of cerium nitrate and dissolve it in 20ml of ethanol solution, add 6.0g of silica gel with a particle size of 60-100 mesh, stir for a period of time until the ethanol evaporates, dry the powder in an oven at 60°C, and then place it in a muffle furnace , 350°C for 6h, and the composite material CeO infused with cerium oxide was obtained. 2 SiO 2 .

[0039] Composite material CeO infused with cerium oxide 2 SiO 2 Add to NaOH, TPAOH, water mixed solution (molar ratio: 10NaOH:36TPAOH:4200H 2 O), stirred at room temperature for 2 hours, put into a hydrothermal reaction kettle, reacted at 160°C for 30 hours, took it out, cooled, washed, dried, and finally calcined in a muffle furnace at 650°C for 4 hours to obtain a specific surface area of 317.2m 2 / g, bulk molecular sieve material 2 with a variety of channel metal cerium modification, its XRD is as follows figure 2 shown. figure 2 Shown in the middle are ZSM-5 and CeO 2 The XRD diffraction peaks are the...

Embodiment 3

[0045] Weigh 2.2g of ferric nitrate and 0.8g of nickel nitrate and dissolve in 20ml of ethanol solution, add 6.0g of silica gel with a particle size of 100-10 mesh, stir for a period of time until the ethanol evaporates to dryness, dry the powder in an oven at 60°C, and then place Burn in a muffle furnace at 300°C for 12 hours to obtain NiFe 2 o 4 Infused Composite NiFe 2 o 4 SiO 2 .

[0046] NiFe 2 o 4 Infused Composite NiFe 2 o 4 SiO 2 Add to NaOH, TPAOH, CTAB and water (molar ratio: 10NaOH:36TPAOH:5CTAB:4200H 2 O) In a uniformly mixed solution, stir at room temperature for 2 hours, put it into a hydrothermal reaction kettle, react at 180°C for 48 hours, take it out, cool it, wash it, dry it, and finally calcinate it in a muffle furnace at 550°C for 8 hours. The specific surface area obtained is 351.9m 2 / g, composite metal NiFe with various channels 2 o 4 Modified bulk molecular sieve material 3, its adsorption-desorption curve is as follows image 3 shown. ...

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Abstract

The invention discloses a method for preparing a metal composite molecular sieve with multiple ducts. The method comprises the following steps: 1, dissolving metal nitrate in ethanol, adding silica gel, stirring until the ethanol is completely volatized, drying, and roasting to obtain metal poured silica gel composite material; 2, adding the metal poured silica gel composite material into an aqueous solution filled with a template agent, stirring, reacting in a hydrothermal reaction kettle, taking out after reaction, cooling, washing, calcining to obtain the metal composite molecular sieve with multiple ducts. The metal composite molecular sieve prepared by the method combines the performances of metal oxide and porous molecular sieve materials, is strong in adsorption capability, can be added into filter tips in cigarettes, can effectively reduce the release amount of harmful components in smoke of cigarettes, and is remarkable in effect of reducing B[a]P.

Description

technical field [0001] The invention relates to a metal composite molecular sieve with multiple channels and a preparation method thereof. Background technique [0002] With the progress of society, smoking and environmental issues have attracted worldwide attention. The "Framework Convention on Tobacco Control" requires governments to formulate more stringent "tobacco control" laws and regulations, urging cigarette manufacturers to strictly control the release of major harmful components in cigarette smoke while reducing the amount of tar released from cigarettes. In 2009, the Zhengzhou Tobacco Research Institute led a study on the cigarette smoke hazard index of Chinese-style cigarettes, and selected seven representative components as cigarette hazard evaluation indicators, such as CO, HCN, NNK, B[a] P, phenol, etc. Porous materials with rich pore structure and regular pore distribution have been used to reduce the harmful components of tobacco. In order to further impr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/18B01J20/30A24D3/04A24D3/10
Inventor 戴亚俞海军马扩彦汪长国孙玉峰
Owner CHONGQING CHINA TOBACCO IND CO LTD
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