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Aluminum-manganese-pillared montmorillonite load catalyst for eliminating benzene series at low temperature as well as preparation and application thereof

A technology of supporting catalyst and montmorillonite, which is applied in the field of catalytic combustion of benzene, can solve the problem of high reaction temperature, and achieve the effects of simple preparation process, good adsorption performance and economical benefits.

Inactive Publication Date: 2010-12-29
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few researches on the catalytic combustion elimination of benzene at home and abroad, and the reaction temperature of complete catalytic combustion elimination of benzene is relatively high

Method used

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  • Aluminum-manganese-pillared montmorillonite load catalyst for eliminating benzene series at low temperature as well as preparation and application thereof
  • Aluminum-manganese-pillared montmorillonite load catalyst for eliminating benzene series at low temperature as well as preparation and application thereof
  • Aluminum-manganese-pillared montmorillonite load catalyst for eliminating benzene series at low temperature as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Slowly add the purified montmorillonite (Ca type Shandong montmorillonite, cation exchange capacity 88mmol / 100g, interlayer spacing 15.24nm) into deionized water in a certain proportion to make a slurry suspension (montmorillonite: water (mass ratio) = 1: 5), then weigh a certain amount of NaCl in a certain proportion and slowly add it to the above slurry (NaCl: slurry (mass ratio) = 1: 80), keep the temperature at 60 ° C for 1 hour modification reaction, Sodium montmorillonite was prepared.

[0029] Add 0.1mol / L NaOH solution dropwise to 0.2mol / L AlCl 3 In solution, keep the molar ratio [OH - ] / [Al 3+ ] (molar ratio) = 1, slowly added dropwise to the above solution at a rate of 1ml / min, the temperature was maintained at 60°C, and then continued to stir for 1 hour, and the resulting suspension was aged at room temperature for 24 hours to obtain an aluminum columnar agent.

[0030] Add the above-mentioned sodium montmorillonite into deionized water in a certain pr...

Embodiment 2

[0036] (1) Slowly add the purified montmorillonite (Ca type Shandong montmorillonite, cation exchange capacity 88mmol / 100g, interlayer spacing 15.24nm) into deionized water in a certain proportion to make a slurry suspension (montmorillonite: water (mass ratio) = 1: 10), then weigh a certain amount of NaCl in a certain proportion and slowly add it to the above slurry (NaCl: slurry (mass ratio) = 1: 90), keep the temperature at 80 ° C for 3 hours, Sodium montmorillonite was prepared.

[0037] 0.2mol / L of MnCl 2 solution with 0.3mol / L AlCl 3 Solution in moles [Mn 2+ ] / [Al 3+ ] ratio is 0.5:1, and the prepared 0.3mol / L NaOH solution is kept to maintain the molar ratio [OH - ] / [Mn 2+ +Al 3+ ] = 3, slowly added dropwise to the above solution at a rate of 2ml / min, the temperature was maintained at 80°C, and then continued to stir for 3 hours, and the resulting suspension was aged at room temperature for 26 hours to obtain the manganese aluminum columnar agent.

[0038] Add th...

Embodiment 3

[0044](1) Slowly add the purified montmorillonite (Ca type Shandong montmorillonite, cation exchange capacity 88mmol / 100g, interlayer spacing 15.24nm) into deionized water in a certain proportion to make a slurry suspension (montmorillonite: water (mass ratio) = 1: 5), then weigh a certain amount of NaCl in a certain proportion and slowly add it to the above slurry (NaCl: slurry (mass ratio) = 1: 80), keep the temperature at 60 ° C for 1 hour modification reaction, Sodium montmorillonite was prepared. Add 0.1mol / L NaOH solution dropwise to 0.2mol / L AlCl 3 In solution, keep the molar ratio [OH - ] / [Al 3+ ] molar ratio) = 1, slowly added dropwise to the above solution at a rate of 1ml / min, the temperature was maintained at 60°C, and then continued to stir for 1 hour, and the resulting suspension was aged at room temperature for 24 hours to obtain an aluminum columnar agent.

[0045] Add the above-mentioned sodium montmorillonite into deionized water in a certain proportion (s...

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Abstract

The invention discloses an aluminum-manganese-pillared montmorillonite load catalyst for eliminating benzene series at low temperature as well as preparation and application thereof, belonging to the technical field of catalytic combustion. The catalyst is prepared by loading Pt or Pd on an aluminum-manganese-pillared montmorillonite carrier; the aluminum-manganese-pillared montmorillonite carrier is a composite material which is prepared by inserting hydroxyl manganese and aluminum ions into sodium-treated montmorillonite interlayer and treating; and the aluminum-manganese-pillared montmorillonite load catalyst is prepared by adding palladium nitrate or a chloroplatinic acid solution in an aluminum-manganese-pillared montmorillonite slurry, adjusting the pH value to be 8-1, adding an NaBH4 solution, stirring and washing with water to be neutral and drying. The catalyst has large specific surface area, ordered aluminum-manganese-pillared structure and low load amount of noble metals of Pd and Pt, is used for catalyzing and combusting at low temperature to eliminate the benzene series and has higher efficiency and stability, cheap raw material for preparation and simple preparation process.

Description

technical field [0001] The invention relates to a manganese-aluminum pillared montmorillonite-supported catalyst used for catalytic combustion to eliminate benzene series, a preparation method thereof and an application in low-temperature catalytic combustion to eliminate benzene series, belonging to the technical field of benzene catalytic combustion. Background technique [0002] Volatile organic compounds (Volatile organic compounds (VOCs)) are a type of gaseous pollutants, as long as they refer to organic compounds with a boiling point lower than 260°C or a vapor pressure lower than 70Pa at normal temperature and pressure. VOCs are a class of organic pollutants that are ubiquitous indoors and outdoors and have a complex composition. They mainly come from automobile exhaust emissions, industrial production and energy use processes. VOCs can exist in the air in the form of steam at room temperature, most of which are toxic, can induce diseases and even cause cancer, and it...

Claims

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Application Information

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IPC IPC(8): B01J23/656B01J35/10B01D53/86B01D53/72
Inventor 叶青李冬辉程水源康天放
Owner BEIJING UNIV OF TECH
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