Metal deposition in porous anodic alumina films under hydrotreating conditions

Autor:	Theodore T. Tsotsis, I.A. Webster, James Wei, Barbara J. Smith, N. Nourbakhsh
Rok vydání:	1991
Předmět:	Chemistry chemistry.chemical_element Microstructure Electron spectroscopy Catalysis Nickel X-ray photoelectron spectroscopy Chemical engineering Transmission electron microscopy Organic chemistry Crystallite Physical and Theoretical Chemistry Energy source Layer (electronics)
Zdroj:	Journal of Catalysis. 127:178-189
ISSN:	0021-9517
DOI:	10.1016/0021-9517(91)90218-s
Popis:	This work describes the condition of anodic alumina films aged during nickel etio-porphyrin hydrodemetallation. The films were examined in cross section by Transmission Electron Microscopy (TEM) and were depth profiled by X-ray Photoelectron Spectroscopy (XPS). The use of anodic alumina films with ideal porous structures allows examination by TEM of the mode of metal deposition inside single pores. TEM micrographs provide strong evidence of Ni present in the form of relatively large discrete crystallites rather than as a uniform layer on the pore walls as well as many other structural details impossible to extract from the examination of aged conventional alumina catalyst supports.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::43b8f1cc08d3b91255211fec54ecbf1d https://doi.org/10.1016/0021-9517(91)90218-s Zobrazit plný text záznamu