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

doi:10.1117/12.560285

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

Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

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.

Original language	English (US)
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
Editors	M.W. McCall, G. Dewar
Pages	259-267
Number of pages	9
Volume	5508
DOIs	https://doi.org/10.1117/12.560285
State	Published - 2004
Event	Complex Mediums V: Light and Complexity - Denver, CO, United States Duration: Aug 4 2004 → Aug 5 2004

Other

Other	Complex Mediums V: Light and Complexity
Country/Territory	United States
City	Denver, CO
Period	8/4/04 → 8/5/04

Keywords

Cluster
Copper
de-NO
Mordenite
Nanoparticles
NMR
SiO /Al O
UV-Vis

ASJC Scopus subject areas

Electrical and Electronic Engineering
Condensed Matter Physics

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10.1117/12.560285

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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. In M. W. McCall, & G. Dewar (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 5508, pp. 259-267). Article 37 https://doi.org/10.1117/12.560285

Formation of copper nano-species of de-NOx catalysts based on Cu-mordenite: Role of variable silica-alumina ratio and effects of adsorbed water. / Petranovskii, V.; Simakov, A.; Chavez-Rivas, F. et al.
Proceedings of SPIE - The International Society for Optical Engineering. ed. / M.W. McCall; G. Dewar. Vol. 5508 2004. p. 259-267 37.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Petranovskii, V, Simakov, A, Chavez-Rivas, F, Zamorano-Ulloa, R, Marzke, R, Efimov, A, Pestryakov, A & Espinosa, MÁH 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. in MW McCall & G Dewar (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 5508, 37, pp. 259-267, Complex Mediums V: Light and Complexity, Denver, CO, United States, 8/4/04. https://doi.org/10.1117/12.560285

Petranovskii V, Simakov A, Chavez-Rivas F, Zamorano-Ulloa R, Marzke R, Efimov A et al. Formation of copper nano-species of de-NOx catalysts based on Cu-mordenite: Role of variable silica-alumina ratio and effects of adsorbed water. In McCall MW, Dewar G, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 5508. 2004. p. 259-267. 37 doi: 10.1117/12.560285

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abstract = "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. ",

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author = "V. Petranovskii and A. Simakov and F. Chavez-Rivas and R. Zamorano-Ulloa and R. Marzke and A. Efimov and A. Pestryakov and Espinosa, {M. {\'A} Hern{\'a}ndez}",

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AB - 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.

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KW - UV-Vis

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

Abstract

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Keywords

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