Effects of metal modification on the performance of Pt/<i>β</i>-zeolite catalysts in the oxidation of HC, CO and SO<sub>2</sub> in diesel exhaust

HUANG Pan; CHEN Yong-dong; LAI Nan-jun; JIANG Bing-zheng; YANG Cao-ping; ZHANG Chao-lei; CHEN Yao-qiang

Volume 44 Issue 7

Jul. 2016

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Article Navigation > Journal of Fuel Chemistry and Technology > 2016 > 44(7): 882-887

HUANG Pan, CHEN Yong-dong, LAI Nan-jun, JIANG Bing-zheng, YANG Cao-ping, ZHANG Chao-lei, CHEN Yao-qiang. Effects of metal modification on the performance of Pt/β-zeolite catalysts in the oxidation of HC, CO and SO2 in diesel exhaust[J]. Journal of Fuel Chemistry and Technology, 2016, 44(7): 882-887.

Citation:

HUANG Pan, CHEN Yong-dong, LAI Nan-jun, JIANG Bing-zheng, YANG Cao-ping, ZHANG Chao-lei, CHEN Yao-qiang. Effects of metal modification on the performance of Pt/β-zeolite catalysts in the oxidation of HC, CO and SO₂ in diesel exhaust[J]. Journal of Fuel Chemistry and Technology, 2016, 44(7): 882-887.

Citation:

HUANG Pan, CHEN Yong-dong, LAI Nan-jun, JIANG Bing-zheng, YANG Cao-ping, ZHANG Chao-lei, CHEN Yao-qiang. Effects of metal modification on the performance of Pt/β-zeolite catalysts in the oxidation of HC, CO and SO₂ in diesel exhaust[J]. Journal of Fuel Chemistry and Technology, 2016, 44(7): 882-887.

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Effects of metal modification on the performance of Pt/β-zeolite catalysts in the oxidation of HC, CO and SO₂ in diesel exhaust

1.
The Research Center of New Energy Materials and Technology, College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
2.
Key Laboratory of Green Chemistry and Technology of Ministry of Education, Sichuan University, Chengdu 610064, China

Funds:

The project was supported by the National High Technology Research and Dvelopment Program of China 2013AA065304

Scientific Research Starting Project of SWPU 2014QHZ016

Opening Project of Key Laboratory of Green Catalysis of Sichuan Institutes of High Education LYJ1308

The Fifteenth Period College Students′ Extracurricular Open Experiment of Southwest Petroleum University KSZ15064

More Information

Corresponding author: CHEN Yong-dong, Tel: 028-83032863, E-mail: yongdongchen@swpu.edu.cn
Received Date: 2016-01-14
Rev Recd Date: 2016-04-13

Available Online: 2021-01-23

Publish Date: 2016-07-10

Abstract

Abstract

Pt/β-zeolite catalysts were modified with Ce, Cr, Mo and Cu by impregnation method and characterized by nitrogen sorption, XRD, H₂-TPR, NH₃-TPD and XPS; the effects of metal modification on the textural properties, skeletal structure, surface acidity as well as the catalytic performance in the oxidation of SO₂, HC and CO in the simulated diesel exhaust gas were investigated. The results indicate that metal modification has little influence on the textural properties and skeletal structure of the Pt/β-zeolite catalyst, whereas the addition of Cu, Cr and Mo can change the acid strength and has a stronger inhibition effect on the oxidation of SO₂. Especially, the Cu-modified Pt/β-zeolite catalyst exhibits the best ability to inhibit the oxidation of SO₂; the SO₂ conversions over Cu modified catalyst under 350 and 450 ℃ are decreased by 70.4% and 70.2%, respectively, in comparison with those over the unmodified Pt/β-zeolite catalyst. However, because of the interaction between metal and Pt species, Pt species becomes more difficult to reduce over the metal modified Pt/β-zeolite catalysts, which may lead to a decrease of their catalytic activity in the oxidation of HC and CO.
- metal modification,
- beta zeolite,
- diesel vehicles,
- exhaust purification,
- catalytic oxidation,
- HC,
- CO,
- SO₂

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References(21)

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