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Protein type halogen resistant combustible gas combustion catalyst and preparation method and application thereof

A combustion catalyst, protein-based technology, applied in combustion methods, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low-temperature catalytic performance, etc., achieve easy preparation, wide application fields, and improve chlorine resistance and stability. sexual effect

Active Publication Date: 2017-06-13
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the Ru catalyst has certain chlorine resistance, its low-temperature catalytic performance is slightly inferior compared with Pt and Pd

Method used

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  • Protein type halogen resistant combustible gas combustion catalyst and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0037] Weigh TiO prepared from metatitanic acid 2 Powder 15g, add 17.5ml ball-milling acid, at 500 rev / min rotating speed, ball mill for 2 hours, the prepared TiO 2 The slurry is coated on the blank monolithic honeycomb, dried by microwave for 6-12min; then baked at 600°C for 4 hours; the coated TiO 2 The honeycomb catalyst was soaked in a solution containing 6mg / mlPt-3mg / mlPd for 3min, then taken out, and dried by microwave for 3min; then, it was roasted at 500°C for 2 hours; TiO 2Immerse in slurry for 2-3min, then microwave dry for 3min, then bake at 500°C for 2 hours; TiO 2 / Pt0.2%-Pd0.1% / TiO 2 / monolith catalyst (marked: S-1). The prepared catalyst was heated at 450°C in 10% H 2 -90%N 2 Reduction under atmosphere for 2 hours, then in 83.69% N 2 (dry basis), 11.05% O 2 (dry basis), 5.26% CO 2 (dry basis), 100-200ppmCO, 9%H 2 O, 30ppm Cl - Under working conditions, test the performance of the catalyst.

Embodiment 2

[0039] Weigh TiO prepared from metatitanic acid 2 Powder 15g, add 17.5ml ball-milling acid, at 500 rev / min rotating speed, ball mill for 2 hours, the prepared TiO 2 The slurry is coated on the blank monolithic honeycomb, dried by microwave for 6-12min; then baked at 600°C for 4 hours; the coated TiO 2 The honeycomb catalyst was soaked in a solution containing 6mg / mlPt-3mg / ml Pd for 3min, then taken out, dried in microwave for 3min; then, calcined at 500°C for 2 hours; Pt0.2%-Pd0.1% / TiO 2 / monolith catalyst.

[0040] Then take the TiO prepared from metatitanic acid 2 Powder 5g, add 6ml ball-milling acid, then add a small amount of PVP, at 500 rpm speed, ball mill for 2 hours, the prepared TiO 2 slurry, diluted with water. Then the above prepared Pt0.2%-Pd0.1% / TiO 2 / monolith catalyst, soaked in the diluted slurry slurry for 3 minutes, took out, dried in microwave for 3 minutes; then, calcined at 500°C for 2 hours; TiO 2 / Pt0.2%-Pd0.1% / TiO 2 / monolith catalyst (marked: S-...

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Abstract

The invention relates to a protein type halogen resistant combustible gas combustion catalyst and a preparation method and application thereof. The protein type halogen resistant combustible gas combustion catalyst is a core-shell structure catalyst formed by combining one or more of a supported Pt catalyst, a supported Pd catalyst and a supported Rh catalyst. The preparation method comprises the following steps: supporting gamma-Al2O3 doped with CeO2, ZrO2, La2O3, SiO2, TiO2 and W2O3 on a ceramic honeycomb carrier or a metal honeycomb carrier in the form of a coating; and then impregnating active components on the surface of a catalytic coating; and finally, coating the surface of a catalyst with a microporous or mesoporous oxide coating to prepare the protein type integral structure catalyst. The protein type halogen resistant combustible gas combustion catalyst provided by the invention has the advantages of high CO, methane and VOCs combustion activity, excellent hydrothermal stability and excellent halogen resistance and is suitable for the field of gas water heater exhaust purification, chlorine containing VOCs gas catalytic removal, automotive exhaust purification and so on.

Description

technical field [0001] The present invention belongs to combustible gas (H 2 , CO, CH 4 , VOCs, etc.) catalytic removal of environmental protection technology, in particular to a catalyst for catalytic removal of combustible gases and its preparation method under a halogen-containing atmosphere, and provides a method for complete catalytic combustion to eliminate chlorine-containing combustible gases . Background technique [0002] Volatile organic compounds containing halogens have serious hazards to human health and the atmospheric environment. In recent years, the treatment of halogen-containing volatile organic waste gas has received extensive attention. In addition, the incomplete combustion of halogen-containing organic substances will produce gases such as halogen-containing CO, in order to eliminate the above-mentioned air pollutants. Due to its low light-off temperature and complete conversion temperature, catalytic combustion is widely used in automobile exhaus...

Claims

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Application Information

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IPC IPC(8): B01J23/44B01J35/00B01J35/02F23G7/07
Inventor 王胜王树东高典楠汪明哲
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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