The effect of the modification conditions of natural mordenite on their catalytic characteristics in the selective reduction of NOx

Autor:	V. P. Stasevich, T. V. Mironyuk, S. N. Orlik, M. G. Martsenyuk-Kukharuk, V. L. Struzhko, V. A. Ostapyuk
Rok vydání:	1999
Předmět:	inorganic chemicals Ammonia chemistry.chemical_compound Chemistry Thermal desorption spectroscopy Inorganic chemistry Chemical modification Sulfuric acid Selective reduction General Chemistry Mordenite NOx Catalysis
Zdroj:	Theoretical and Experimental Chemistry. 35:120-124
ISSN:	1573-935X 0040-5760
Popis:	The results of a search for optimum conditions for the modification of natural mordenites and the results of an investigation of their acidic characteristics by temperature programmed desorption of ammonia for the purpose of producing active and sulfur-resistant catalysts for the selective reduction of NOx by lower hydrocarbons (C1−C4) are presented. It was shown that during the chemical modification of samples of mordenite-bearing rock, including acid treatment with 0.25–0.5 N sulfuric acid solutions, recationization, and subsequent decationization, the concentration of strong acid centers increases. Here the activity of the catalysts and the resistance to the effect of SO2 in the selective reduction of NOx to nitrogen by a propane-butane mixture are increased.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::075ac28be758b2666091978430bc4d76 https://doi.org/10.1007/bf02511501 Zobrazit plný text záznamu Full text from SpringerLink