改性赤泥负载Pt催化剂催化氧化甲苯的性能

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Abstract A low-cost modified red mud supported Pt catalyst was prepared by impregnation method, and the effect of Pt content on catalytic oxidation activity of toluene on Pt/MRM catalyst was investigated. 0.4Pt/MRM showed the best catalytic activity, and the toluene conversion rate reached 100% at 230℃. The catalytic activity of 0.4Pt/MRM was still higher when the airspeed was up to 120000h^-1. Toluene can be oxidized effectively in a wide range of toluene concentrations. XRD, FT-IR, BET, H₂-TPR and O₂-TPD were used to characterize. The specific surface area of MRM was significantly higher than RM, which can disperse the active component Pt better and become a suitable catalyst carrier for the active component Pt. The prepared xPt/MRM catalyst had high surface area and good pore structure. The interaction between Fe₂O₃ and Pt species in the modified red mud increased the total oxygen desorption capacity of the catalyst, improved the mobility of oxygen on the catalyst surface, and the catalytic efficiency.

Key words： modified red med Pt catalytic combustion toluene

Received: 05 May 2023

PACS:

X705

Corresponding Authors: 梁文俊,教授,liangwenj@bjut.edu.cn E-mail: liangwenj@bjut.edu.cn

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	FANG Hong-ping
	LIANG Wen-jun
	MA Chen
	MA Lian-gang
	LI Gui-xian

Cite this article:

FANG Hong-ping,LIANG Wen-jun,MA Chen等. Catalytic performance of Pt-supported modified red mud catalyst for toluene catalytic oxidation[J]. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(3): 1244-1252.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2024/V44/I3/1244

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