Preparation method and application of Cu-Mn catalyst loaded on aluminum-pillared montmorillonite

A montmorillonite and catalyst technology, which is applied in the field of aluminum-pillared montmorillonite supported catalysts, achieves the effects of low energy consumption, mild reaction conditions and reduction of secondary pollution

Inactive Publication Date: 2014-06-18
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Before the 1980s, the catalysts used for CO oxidation were mainly noble metal catalysts with Pt and Pd as active components, but they were only suitable for catalytic oxidation with low CO concentration.

Method used

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  • Preparation method and application of Cu-Mn catalyst loaded on aluminum-pillared montmorillonite
  • Preparation method and application of Cu-Mn catalyst loaded on aluminum-pillared montmorillonite
  • Preparation method and application of Cu-Mn catalyst loaded on aluminum-pillared montmorillonite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Preparation of aluminum pillared montmorillonite carrier

[0020] Add the purified montmorillonite to distilled water in a certain proportion and stir to form a thick solution, water:montmorillonite (mass ratio) = 5:1, then weigh a certain proportion of NaCl and add it to the above slurry, wherein the slurry: NaCl (mass ratio) = 90:1, react at 60°C for 1 hour, then centrifuge and wash 8 times until there is no Cl - After detection, the product was dried at 120°C for 24 hours to obtain sodium montmorillonite.

[0021] At 60°C, add 0.1 mol / L AlCl to 0.1 mol / L NaOH solution at a rate of 1 ml / min 3 solution, where [Al 3+ ]: [OH - ] (molar ratio) = 1:1, keep stirring for 1 hour, and then let the solution stand at room temperature for 22 hours to obtain aluminum columning agent.

[0022] Add the above-mentioned sodium montmorillonite to distilled water according to a certain proportion, and make a suspension slurry of sodium montmorillonite according to the ratio of d...

Embodiment 2

[0027] (1) Preparation of aluminum pillared montmorillonite carrier

[0028] Add the purified montmorillonite to distilled water according to a certain proportion and stir it into a thick solution, wherein water:montmorillonite (mass ratio) = 8:1, then weigh a certain proportion of NaCl and add it to the above slurry, wherein the slurry : NaCl (mass ratio) = 95:1, react at 70°C for 2 hours, then centrifuge and wash 10 times until there is no Cl - After detection, the product was dried at 130°C for 36 hours to obtain sodium montmorillonite.

[0029] At a temperature of 70°C, add 0.2 mol / L AlCl to 0.2 mol / L NaOH solution at a rate of 1.5 ml / min 3 solution, where [Al 3+ ] / [OH - ] (molar ratio) = 2:1, keep stirring for 2 hours, and then let the solution stand at room temperature for 24 hours to obtain aluminum columning agent.

[0030]Add the above-mentioned sodium montmorillonite into distilled water according to a certain proportion, and make a suspension slurry of sodium mo...

Embodiment 3

[0035] (1) Preparation of aluminum pillared montmorillonite carrier

[0036] Add the purified montmorillonite to distilled water in a certain proportion and stir to form a thick solution, water: montmorillonite (mass ratio) = 10:1, then weigh a certain proportion of NaCl and add it to the above slurry, wherein the slurry: NaCl (mass ratio) = 100:1, react at 80°C for 3 hours, then centrifuge and wash 12 times until there is no Cl - After detection, the product was dried at 140°C for 48 hours to obtain sodium montmorillonite.

[0037] At a temperature of 80°C, add 0.1-0.3mol / L AlCl to 0.3mol / L NaOH solution at a rate of 2ml / min 3 solution, where [Al 3+ ] / [OH - ] (molar ratio) = 3, continued to stir for 3 hours, and then left the solution at room temperature for 26 hours to obtain an aluminum columnar agent.

[0038] Add the above-mentioned sodium montmorillonite to distilled water according to a certain proportion, and make a suspension slurry of sodium montmorillonite accor...

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Abstract

The invention relates to a preparation method and the application of a Cu-Mn catalyst loaded on aluminium-pillared montmorillonite, belonging to the field of catalytic oxidation of CO. The montmorillonite which is widespread in the natural world is taken as a raw material; the preparation method comprises the steps of modifying the montmorillonite raw ore by sodium treatment and aluminum-pillaring, and loading Cu and Mn onto the aluminum-pillared montmorillonite to prepare the catalyst, wherein the loading amounts of Cu and Mn are respectively 4.8-9wt%. The Cu-Mn catalyst is suitable for the catalytic oxidation of CO with high space velocity (60, 000h<-1>-100, 000h<-1>). After the load-type Cu-Mn catalyst is adopted, CO is completely converted into CO2 (the conversion rate is 100%) at 180 DEG C, and the conversion rate of about 100% of CO can be maintained within 100h at 180 DEG C.

Description

technical field [0001] The invention relates to an aluminum-pillared montmorillonite-supported catalyst for catalytic oxidation of CO, a preparation method and application thereof. Background technique [0002] CO is one of the main air pollutants, seriously endangering people's health and life. Catalytic oxidation of CO has a wide range of practical applications, such as: in fuel cells, utilizing the hydrogen-rich gas produced by reforming methanol, while usually the CO contained in this mixture can lead to poisoning of Pt catalysts, effectively selectively removing H 2 A small amount of CO gas mixed in the fuel cell is very important for the normal operation of the fuel cell. The catalytic oxidation of CO is involved in everything from CO sensors, gas masks, and CO removal in closed systems. Therefore, the research and development of efficient and low-cost CO catalytic oxidation catalysts has broad industrial prospects. [0003] To realize the catalytic oxidation of CO,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01J35/10B01D53/86B01D53/62
CPCY02A50/20
Inventor 叶青张玉李晓新李蒙饶晓雯
Owner BEIJING UNIV OF TECH
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