Significantly Improving the Activity of Methane Oxidation over a Pd-based Catalyst for Lean Natural Gas Vehicles by Catalyst Pre-treatment

The activity of methane oxidation on the Pd/10YZ (10 wt.% Yttria-stabilized Zirconia) catalyst was significantly improved by pretreatment with a simulated emission gas mixture. The 90% methane conversion temperature T90 on the pre-treated Pd/10YZ-P was decreased by 49 °C. It was found that the pretr...

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Published in:Chemistry letters 2023-05, Vol.52 (5), p.329-332
Main Authors: Xu, Yang, Yang, Wenhu, Zhang, Yaliu, Huang, Chengsong, Wu, Bingcheng, Chen, Yaoqiang, Wang, Jianli, Zhong, Lin
Format: Article
Language:eng ; jpn
Subjects:
Catalysts
Gas mixtures
Methane
Natural gas
Oxidation
Pretreatment
Yttria-stabilized zirconia
Yttrium oxide
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container_start_page 329
container_title Chemistry letters
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creator Xu, Yang
Yang, Wenhu
Zhang, Yaliu
Huang, Chengsong
Wu, Bingcheng
Chen, Yaoqiang
Wang, Jianli
Zhong, Lin
description The activity of methane oxidation on the Pd/10YZ (10 wt.% Yttria-stabilized Zirconia) catalyst was significantly improved by pretreatment with a simulated emission gas mixture. The 90% methane conversion temperature T90 on the pre-treated Pd/10YZ-P was decreased by 49 °C. It was found that the pretreatment increased the content of PdO and active oxygen species on the catalyst surface. Meanwhile, larger crystalline PdO particles were formed after pretreatment. This enhanced the reducing property of the catalyst, resulting in a significant improvement of methane oxidation activity.
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subjects Catalysts
Gas mixtures
Methane
Natural gas
Oxidation
Pretreatment
Yttria-stabilized zirconia
Yttrium oxide
title Significantly Improving the Activity of Methane Oxidation over a Pd-based Catalyst for Lean Natural Gas Vehicles by Catalyst Pre-treatment
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