Formation of copper nano-species of de-NOx catalysts based on Cu-mordenite: Role of variable silica-alumina ratio and effects of adsorbed water

V. Petranovskii, A. Simakov, F. Chavez-Rivas, R. Zamorano-Ulloa, R. Marzke, A. Efimov, A. Pestryakov, M. Á Hernández Espinosa

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

Аннотация

Cu-mordenites catalysts are among the most active available for de-NOx at moderate temperatures. Silica-alumina molar ratio of mordenite supports strongly affects conversion efficiency for NOx. Copper mordenites' rapid deactivation by water has led us to investigate the effects of adsorbed water on framework and extra-framework ions, mainly using NMR of 27Al and 1H. Adsorbed water content has been monitored and controlled in mordenite samples via TGA, as well as by vacuum calcination. Several NMR measurements have been performed to aid in the interpretation of spectra, including variable pulse-delay spin echo and 1H- 27Al TRAPDOR. A number of surface characterization techniques have been applied to both H- and Cu-mordenites. Catalytic experiments showed that the reduction of NOx to N 2 and O 2 by hydrocarbons reach 95-98 % depending on the catalyst composition.

Язык оригиналаАнглийский
Название основной публикацииProceedings of SPIE - The International Society for Optical Engineering
РедакторыM.W. McCall, G. Dewar
Страницы259-267
Число страниц9
Том5508
DOI
СостояниеОпубликовано - 2004
СобытиеComplex Mediums V: Light and Complexity - Denver, CO, Соединенные Штаты Америки
Продолжительность: 4 авг 20045 авг 2004

Другое

ДругоеComplex Mediums V: Light and Complexity
СтранаСоединенные Штаты Америки
ГородDenver, CO
Период4.8.045.8.04

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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    Petranovskii, V., Simakov, A., Chavez-Rivas, F., Zamorano-Ulloa, R., Marzke, R., Efimov, A., Pestryakov, A., & Espinosa, M. Á. H. (2004). Formation of copper nano-species of de-NOx catalysts based on Cu-mordenite: Role of variable silica-alumina ratio and effects of adsorbed water. В M. W. McCall, & G. Dewar (Ред.), Proceedings of SPIE - The International Society for Optical Engineering (Том 5508, стр. 259-267). [37] https://doi.org/10.1117/12.560285