Layered delta-MnO2 as an active catalyst for toluene catalytic combustion

doi:10.1016/j.apcata.2020.117715

SIC OpenIR

	Layered delta-MnO2 as an active catalyst for toluene catalytic combustion
	Li, RZ; Zhang, L; Zhu, SM; Fu, SY; Dong, XP; Ida, S; Zhang, LX; Guo, LM
	2020-07-25
Source Publication	APPLIED CATALYSIS A-GENERAL
ISSN	0926-860X
Subtype	Article
Abstract	Layered delta-MnO2 was successfully synthesized by redox reaction precipitation between KMnO4 and n-butanol. Then, the as-synthesized layered delta-MnO2 was used as catalyst for toluene catalytic combustion and showed excellent catalytic performance. The T-10 and T-90 (the temperatures corresponded to the toluene conversion of 10 % and 90 %) were just 160 degrees C and 199 degrees C, respectively (1000 ppm toluene, GHSV = 60,000 mL/(g h, 20 vol.% O-2/N-2). In addition, the layered delta-MnO2 showed well catalytic stability and humid resistance. The as-prepared catalysts were characterized by XRD, N-2 sorption, SEM, TEM, XPS, H-2-TPR, O-2-TPD and so on. Compared with the referenced epsilon-MnO2 and gamma-MnO2, the higher catalytic activity of layered delta-MnO2 was ascribed to its higher specific surface area, stronger low-temperature reducibility and richer oxygen vacancy. Finally, the toluene catalytic oxidation mechanism over delta-MnO2 was also proposed based on the results of in-situ DRIFTs. And the key successively intermediate species for toluene oxidation over delta-MnO2 were benzyl alcohol, benzoic acid, maleic anhydride and acetate.
DOI	10.1016/j.apcata.2020.117715
WOS Keyword	IN-SITU PYROLYSIS ; MANGANESE OXIDE ; PEROVSKITE OXIDES ; LATTICE OXYGEN ; OXIDATION ; PERFORMANCE ; REMOVAL ; CO ; CHLOROBENZENE ; DECOMPOSITION
Language	英语
WOS Research Area	Chemistry ; Environmental Sciences & Ecology
Publisher	ELSEVIER
Citation statistics
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/27887
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Li, RZ,Zhang, L,Zhu, SM,et al. Layered delta-MnO2 as an active catalyst for toluene catalytic combustion[J]. APPLIED CATALYSIS A-GENERAL,2020.
APA	Li, RZ.,Zhang, L.,Zhu, SM.,Fu, SY.,Dong, XP.,...&Guo, LM.(2020).Layered delta-MnO2 as an active catalyst for toluene catalytic combustion.APPLIED CATALYSIS A-GENERAL.
MLA	Li, RZ,et al."Layered delta-MnO2 as an active catalyst for toluene catalytic combustion".APPLIED CATALYSIS A-GENERAL (2020).

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