IR spectroscopic and thermal desorption studies of the interaction of the SO2 + O2 mixture with the 9% Ni-Cu-Cr/2% Ce/(θ + α)-Al2O3 catalyst

Autor:	K. Dosumov, A. K. Umbetkaliev, S.A. Tungatarova, A. R. Brodskii, Z.T. Zheksenbaeva, N. M. Popova
Rok vydání:	2012
Předmět:	Thermal desorption Analytical chemistry Oxide Infrared spectroscopy Catalysis Metal chemistry.chemical_compound Adsorption chemistry Chemisorption visual_art visual_art.visual_art_medium Physical and Theoretical Chemistry Absorption (chemistry)
Zdroj:	Russian Journal of Physical Chemistry A. 86:1609-1613
ISSN:	1531-863X 0036-0244
DOI:	10.1134/s003602441210007x
Popis:	Data on the formation of surface structures during the adsorption of sulfur dioxide on alumina-supported metal and oxide catalysts in the presence of oxygen were reviewed. The results of our IR spectroscopic and thermal desorption studies of the interaction of the SO2+O2 mixture with the 9% Ni-Cu-Cr/2% Ce/(θ + α)-Al2O3 catalyst are presented. At 673 K chemisorption of SO2 takes place (absorption band 1165 cm−1, Tdesm = 673 K), and SO2 is oxidized to form sulfate structures (absorption bands 1235, 1140, 1100, 985, and 615 cm−1, Tdesm = 973 K), which decompose into SO2 and O2 at 973 K and decay when reduced in H2.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6943d509171e33a3cf8dbc84420ff5bc https://doi.org/10.1134/s003602441210007x Zobrazit plný text záznamu Full text from SpringerLink