Catalytic performance of La-Mn-Fe-Cu/HZSM-5 catalysts for soot combustion from diesel exhaust

WANG Hong; WANG Jun-li; LI Cui-qing; DING Fu-chen; SONG Yong-ji; CHI Yao-ling

Volume 40 Issue 03

Mar. 2012

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Article Navigation > Journal of Fuel Chemistry and Technology > 2012 > 40(03): 374-379

WANG Hong, WANG Jun-li, LI Cui-qing, DING Fu-chen, SONG Yong-ji, CHI Yao-ling. Catalytic performance of La-Mn-Fe-Cu/HZSM-5 catalysts for soot combustion from diesel exhaust[J]. Journal of Fuel Chemistry and Technology, 2012, 40(03): 374-379.

Citation:

WANG Hong, WANG Jun-li, LI Cui-qing, DING Fu-chen, SONG Yong-ji, CHI Yao-ling. Catalytic performance of La-Mn-Fe-Cu/HZSM-5 catalysts for soot combustion from diesel exhaust[J]. Journal of Fuel Chemistry and Technology, 2012, 40(03): 374-379.

Citation:

WANG Hong, WANG Jun-li, LI Cui-qing, DING Fu-chen, SONG Yong-ji, CHI Yao-ling. Catalytic performance of La-Mn-Fe-Cu/HZSM-5 catalysts for soot combustion from diesel exhaust[J]. Journal of Fuel Chemistry and Technology, 2012, 40(03): 374-379.

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Catalytic performance of La-Mn-Fe-Cu/HZSM-5 catalysts for soot combustion from diesel exhaust

1.
Department of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China;
2.
Hunan Baili Engineering Science and Technology Co. Ltd, Yueyang 414007, China

Received Date: 2011-04-30
Publish Date: 2012-03-31

Abstract

Abstract

The catalysts of perovskite-type complex oxide loaded on HZSM-5 zeolite were synthesized. The catalysts were characterized by XRD, SEM, XPS and H₂-TPR, and their performance for combusting soot was evaluated in a fixed micro-reactor. The results show that when B-site ion was consisted of various metals, the catalytic performance was improved, the soot combustion temperature decrease, and the selectivity forming CO₂ increased. The performance of catalysts was affected by the species and component of B-site ion. The selectivity forming CO₂ increased and the temperature of soot combustion reduced when Cu and Co ion was in B-site, respectively. The temperature of soot combustion and selectivity forming CO₂ was improved with changing the mole ratio of Fe/Mn. Among them, LaMn_0.2Fe_0.7Cu_0.1O₃/HZSM-5 catalyst has better performance with lower combustion temperature of T_ig, T_m and T_f at 236.6, 419.0 and 458.7 ℃, respectively, and higher selectivity forming CO₂ of 88.3%。
- perovskite-type complex oxide,
- HZSM-5,
- soot,
- catalytic combustion

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References(15)

References

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