On the Mechanism of NO Selective Catalytic Reduction by Hydrocarbons over Cu-ZSM-5 via X-ray Absorption Spectroscopic Study

1999 ◽  
Vol 103 (14) ◽  
pp. 2755-2765 ◽  
Author(s):  
Di-Jia Liu ◽  
Heinz J. Robota
Keyword(s):  
Spectroscopic Study ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
X Ray ◽  
X Ray Absorption

scholarly journals Cu- and Fe-speciation in a composite zeolite catalyst for selective catalytic reduction of NOx: insights from operando XAS

2021 ◽  
Author(s):  
Ilia A. Pankin ◽  
Houeida Issa Hamoud ◽  
Kirill A. Lomachenko ◽  
Søren Birk Rasmussen ◽  
Andrea Martini ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Absorption Spectroscopy ◽  
Zeolite Catalyst ◽  
Catalytic Reduction ◽  
Mechanical Mixture ◽  
X Ray ◽  
Fe Speciation ◽  
Reduction Of Nox ◽  
Operando Xas ◽  
X Ray Absorption

Cu-SAPO-34 (Cu-CZC) and Fe-mordenite (Fe-MOR) and their mechanical mixture (50 : 50) have been exhaustively investigated by means of operando X-ray absorption spectroscopy under NH3-SCR conditions.

Insights into sulfur poisoning and regeneration of Cu-SSZ-13 catalysts: In situ Cu and S K-edge XAS studies

2021 ◽  
Author(s):  
Vitaly Mesilov ◽  
Sandra Dahlin ◽  
Susanna Liljegren Bergman ◽  
Peter Sams Hammershøi ◽  
Shibo Xi ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Oxidation State ◽  
Absorption Spectroscopy ◽  
Catalytic Reduction ◽  
Sulfur Poisoning ◽  
X Ray ◽  
Scr Catalysts ◽  
X Ray Absorption

In situ Cu and S K-edge X-ray absorption spectroscopy (XAS) was used for the investigation of sulfur-poisoned and regenerated Cu-SSZ-13 selective catalytic reduction (SCR) catalysts. Sulfur in the oxidation state...

An X-ray absorption study on copper-containing AlPO4-5 for selective catalytic reduction of NOX by propene

2001 ◽  
Vol 11 (5) ◽  
pp. 1441-1446 ◽  
Author(s):  
Ian D. Burton ◽  
Justin S. J. Hargreaves ◽  
David G. Nicholson ◽  
Merete H. Nilsen ◽  
Michael Stockenhuber
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Absorption Study ◽  
X Ray ◽  
Reduction Of Nox ◽  
X Ray Absorption

TNU-9, a new zeolite for the selective catalytic reduction of NO: An in situ X-ray absorption spectroscopy study

2012 ◽  
Vol 295 ◽  
pp. 22-30 ◽  
Author(s):  
Cristina Franch-Martí ◽  
Cristina Alonso-Escobar ◽  
Jose L. Jorda ◽  
Inma Peral ◽  
Juan Hernández-Fenollosa ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Absorption Spectroscopy ◽  
Catalytic Reduction ◽  
Spectroscopy Study ◽  
Reduction Of No ◽  
X Ray ◽  
X Ray Absorption

Integrated operando X-ray absorption and DFT characterization of Cu–SSZ-13 exchange sites during the selective catalytic reduction of NOx with NH3

2012 ◽  
Vol 184 (1) ◽  
pp. 129-144 ◽  
Author(s):  
J.-S. McEwen ◽  
T. Anggara ◽  
W.F. Schneider ◽  
V.F. Kispersky ◽  
J.T. Miller ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
X Ray ◽  
Reduction Of Nox ◽  
X Ray Absorption

An X-ray absorption study of copper ion exchanged H-mordenite for selective catalytic reduction of NO by ammonia

1991 ◽  
Vol 69 (2) ◽  
pp. 247-258 ◽  
Author(s):  
Young Choi Eun ◽  
Nam In-Sik ◽  
Gul Kim Young ◽  
Shik Chung Jong ◽  
Sung Lee Jae ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Copper Ion ◽  
Absorption Study ◽  
Reduction Of No ◽  
X Ray ◽  
X Ray Absorption

Selective catalytic reduction of NO by Co-Mn based nanocatalysts

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Vahid Zabihi ◽  
Mohammad Hasan Eikani ◽  
Mehdi Ardjmand ◽  
Seyed Mahdi Latifi ◽  
Alireza Salehirad
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Energy Dispersive ◽  
Diffraction Field ◽  
X Ray Diffraction ◽  
X Ray ◽  
Analysis Techniques ◽  
Acidic Sites ◽  
Temperature Window ◽  
Temperature Programmed

Abstract One of the most significant aspects in selective catalytic reduction (SCR) of nitrogen oxides (NOx) is developing suitable catalysts by which the process occurs in a favorable way. At the present work SCR reaction by ammonia (NH3-SCR) was conducted using Co-Mn spinel and its composite with Fe-Mn spinel, as nanocatalysts. The nanocatalysts were fabricated through liquid routes and then their physicochemical properties such as phase composition, degree of agglomeration, particle size distribution, specific surface area and also surface acidic sites have been investigated by X-ray diffraction, Field Emission Scanning Electron Microscope, Energy-dispersive X-ray spectroscopy, energy dispersive spectroscopy mapping, Brunauer–Emmett–Teller, temperature-programmed reduction (H2-TPR) and temperature-programmed desorption of ammonia (NH3-TPD) analysis techniques. The catalytic activity tests in a temperature window of 150–400 °C and gas hourly space velocities of 10,000, 18,000 and 30,000 h−1 revealed that almost in all studied conditions, CoMn2O4/FeMn2O4 nanocomposite exhibited better performance in SCR reaction than CoMn2O4 spinel.

Unraveling the Substrate−Metal Binding Site of Ferrochelatase:  An X-ray Absorption Spectroscopic Study†

Biochemistry ◽  
2002 ◽  
Vol 41 (15) ◽  
pp. 4809-4818 ◽  
Author(s):  
Gloria C. Ferreira ◽  
Ricardo Franco ◽  
Arianna Mangravita ◽  
Graham N. George
Keyword(s):  
Spectroscopic Study ◽  
Binding Site ◽  
Metal Binding ◽  
Metal Binding Site ◽  
X Ray ◽  
Substrate Metal ◽  
X Ray Absorption

scholarly journals Operando soft X-ray absorption spectroscopic study on microporous carbon-supported sulfur cathodes

RSC Advances ◽  
2020 ◽  
Vol 10 (65) ◽  
pp. 39875-39880
Author(s):  
Yao Xiao ◽  
Kentaro Yamamoto ◽  
Yukiko Matsui ◽  
Toshiki Watanabe ◽  
Koji Nakanishi ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Spectroscopic Study ◽  
Microporous Carbon ◽  
Sulfur Cathode ◽  
X Ray ◽  
X Ray Absorption ◽  
Sulfur Cathodes

The reaction mechanism of the sulfur cathode in the microporous carbon during discharge was observed by operando XAS.

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