Supported palladium catalyst used for low-temperature catalytic removal of VOCs

A technology of supported palladium and low-temperature catalysis, which is applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, catalyst activation/preparation, etc. It can solve the problems of damage to aromatic hydrocarbons, reduce pore blockage, and improve high-temperature catalytic oxidation activity. Effect

Inactive Publication Date: 2017-12-22
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Benzene series (such as benzene, toluene, xylene, etc.) are widely used as solvents and raw materials in petrochemical enterprises and the pharmaceutical industry, but the emitted aromatic hydrocarbons cause great harm to the human body

Method used

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  • Supported palladium catalyst used for low-temperature catalytic removal of VOCs

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Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] Preparation of SBA-15

[0022] Vector SBA-15 was prepared according to the method described in the literature (Chem. Mater. 2000, 12:275-279).

[0023] Preparation of SBA-16

[0024] Vector SBA-16 was prepared according to the method described in the literature (Appl. Catal. A: Gen. 2013, 467:1-6).

Embodiment 1

[0026] Preparation of Pd-Co / SBA-15

[0027] (1) Weigh 0.12g of cobalt nitrate hexahydrate and dissolve it in 5ml of deionized water, stir well and record it as solution A;

[0028] (2) Weigh 0.0027g of sodium tetrachloropalladate and dissolve it in 15ml of absolute ethanol, stir well and record it as solution B;

[0029] (3) Mix A and B solutions evenly, and disperse them ultrasonically for 30 minutes;

[0030] (4) Weigh 0.9g of SBA-15 and add it to the above mixed solution, and continue ultrasonic dispersion for 30 minutes;

[0031] (5) Let the above suspension stand at room temperature for 12 hours;

[0032] (6) Put the above suspension at 40 o Rotary evaporation under C conditions until anhydrous, placed at 60 o Drying under C conditions for 24h to obtain a precursor;

[0033] (7) The obtained precursor is subjected to 450 o C is calcined to obtain Pd-Co / SBA-15 catalyst, denoted as Pd-Co / SBA-15.

Embodiment 2

[0035] Preparation of Pd-Co / SBA-16

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PUM

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Abstract

The invention provides a supported palladium catalyst used for low-temperature catalytic removal of VOCs. The supported palladium catalyst is prepared through the steps of: 1) dissolving cobalt nitrate hexahydrate in water, dissolving sodium tetrachloropalladate in anhydrous ethanol, and uniformly mixing the two solutions; 2) adding a supporter SBA-15 or SBA-16 to the mixed solution, allowing the mixed solution to stand at room temperature, performing rotary evaporation until no water exists, and drying and roasting the solid to produce Pd-Co/SBA-15 and Pd-Co/SBA-16 catalysts; 2) preparing acid solutions in different types, soaking the Pd-Co/SBA-15 or Pd-Co/SBA-16 catalyst in the acid solutions, and roasting the catalyst, after the acid treatment, at 400-500 DEG C to form acid-processed Pd-Co/SBA-15 and Pd-Co/SBA-16 catalysts. The catalyst is greatly reduced in pore blocking with more active sites exposed, so that the catalyst is suitable for catalytic removal of VOCs, such as benzene-series substances, indoor or outdoor.

Description

technical field [0001] The invention relates to the field of catalyst preparation technology and catalytic environmental protection technology, in particular to a supported palladium catalyst used for low-temperature catalytic elimination of VOCs, and its application. Background technique [0002] In recent years, with the rapid development of science and technology and the continuous progress of human society, more and more environmental problems have emerged, which directly affect human health and sustainable development of society. Among them, organic pollutants have caused serious damage to the environment. Pollution, especially water pollution, air pollution, and soil pollution. The harm of volatile organic compounds (VOCs) to the human body and the ecological environment has attracted people's attention. It mainly includes benzene series (such as benzene, naphthalene, etc.), alkanes (such as methane, propane), oxygen-containing compounds (such as alcohols, aldehydes, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/03B01J37/08B01J37/34B01D53/86B01D53/72B01D53/88
CPCB01D53/72B01D53/86B01D53/8668B01D53/88B01D2257/708B01J29/005B01J29/0325B01J29/0333B01J37/088B01J37/343B01J2229/18Y02A50/20
Inventor 何丹农蔡婷赵昆峰高振源袁静杨玲张涛金彩虹
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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