Interzeolite Conversion of FAU Type Zeolite into CHA and its Application in NH3-SCR

Autor:	Radka Nedyalkova, Cliff Montreuil, Christine Kay Lambert, Louise Olsson
Rok vydání:	2013
Předmět:	Chabazite Ammonia chemistry.chemical_compound Adsorption Ion exchange chemistry Inorganic chemistry Selective catalytic reduction General Chemistry Zeolite Potassium Cation Catalysis
Zdroj:	Topics in Catalysis. 56:550-557
ISSN:	1572-9028 1022-5528
DOI:	10.1007/s11244-013-0015-4
Popis:	In this work we studied the potential feasibility to synthesize small pore zeolites, such as chabazite (CHA) via interzeolite conversion of FAU type zeolite. We have thereafter used CHA as the starting material to obtain Cu–CHA. When CHA in NH4+ form was used to prepare Cu–CHA, the large size of the potassium cation present in the structure caused pore blockage in the chabazite framework, and diminished the adsorption and exchange capacity. However, Cu–CHA with comparable Selective Catalytic Reduction performance to the commercial catalyst was obtained via ion exchange if Cu-exchange was performed from H+–CHA form. Still, the main challenge was to fully eliminate K+ from the zeolite structure in order to further improve its catalytic performance and high temperature stability.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::96b18961bc9d7a556bc204b3b4d8dac5 https://doi.org/10.1007/s11244-013-0015-4 Zobrazit plný text záznamu Plný text ve formátu PDF