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ACS Omega

Title:		Fabrication of gamma-Al(2)O(3) Nanoarrays on Aluminum Foam Assisted by Hydroxide for Monolith Catalysts
Author(s):		Peng S; Ma Z; Ma J; Han Z; Wang H; Wang B; Zhao F; Li G;
Address:		"National Institute of Clean-and-Low-Carbon Energy, Future Science City, Changping District, Beijing 102211, China. Institute of Process Engineering, Chinese Academy of Sciences, 1#, North 2nd Street, Beijing 100190, China"
Journal Title:		ACS Omega
Year:		2023
Volume:		20221228
Issue:		1
Page Number:		1643 - 1651
DOI:		10.1021/acsomega.2c07237
ISSN/ISBN:		2470-1343 (Electronic) 2470-1343 (Linking)
Abstract:		"Heat distribution and good adhesion of the washcoat on monolith catalysts are critical to improving catalytic activity and long-term stability. Compared with cordierite, metal foam presents a high thermal conductivity coefficient. Also, the availability of 'washcoat' in situ grown on metal substrates opens the door to eliminating the problem of coating peeling. Generally, hydrothermal or thermal methods are used for the fabrication of in situ grown washcoat on metal substrates. In this research, the aluminum foam monolith vertically aligned Al(2)O(3) nanowire array is successfully prepared at ambient temperature in an alkaline solution for the first time. Furthermore, the Pt-loaded Al(2)O(3) nanowire array (0.5 g(Pt)/L (monolith)) is applied to C(2)H(4) degradation. The catalyst converts 90% C(2)H(4) at 147 degrees C with a gas hourly space velocity (GHSV) of 20,000 h(-1). And a little decrease (1%) is observed in catalytic activity, even in 15 vol % water vapors. The catalysts show good thermal stability and water resistance property over 36 h at 300 degrees C. Above all, this study presents a simple way of in situ growth of washcoat on metal-substrate monolith with potentially scaled manufacturing. And the monolith catalyst shows good catalytic performance on C(2)H(4), which can be applied for volatile organic compound treatment"
Keywords:
Notes:		"PubMed-not-MEDLINEPeng, Shengpan Ma, Ziran Ma, Jing Han, Zhihua Wang, Hongyan Wang, Baodong Zhao, Feng Li, Ge eng 2023/01/17 ACS Omega. 2022 Dec 28; 8(1):1643-1651. doi: 10.1021/acsomega.2c07237. eCollection 2023 Jan 10"