X-Ray absorption and photoelectron spectroscopic investigation of vanadium interaction with NH4+- and Eu3+-exchanged zeolite-Y following calcination and steam treatment

2002 ◽  
Vol 12 (10) ◽  
pp. 3034-3038 ◽  
Author(s):  
Lorenza Agasi ◽  
Frank J. Berry ◽  
Massimo Carbucicchio ◽  
Jos?? F. Marco ◽  
Michael Mortimer ◽  
...  
Keyword(s):  
Spectroscopic Investigation ◽  
Zeolite Y ◽  
Steam Treatment ◽  
X Ray ◽  
X Ray Absorption

scholarly journals Towards a unified understanding of the copper sites in particulate methane monooxygenase: An X-ray absorption spectroscopic investigation

2021 ◽  
Author(s):  
George Cutsail III ◽  
Matthew O Ross ◽  
Amy C Rosenzweig ◽  
Serena DeBeer
Keyword(s):  
Greenhouse Gas ◽  
Spectroscopic Investigation ◽  
Liquid Fuel ◽  
Methane Monooxygenase ◽  
Enzymatic Conversion ◽  
Particulate Methane Monooxygenase ◽  
X Ray ◽  
Mild Conditions ◽  
Copper Sites ◽  
X Ray Absorption

The enzymatic conversion of the greenhouse gas, methane, to a liquid fuel, methanol, is performed by methane monooxygenases (MMOs) under mild conditions. The copper stoichiometry of particulate MMO (pMMO) has...

scholarly journals In-situ/operando X-ray absorption spectroscopic investigation of the electrode/electrolyte interface on the molecular scale

2020 ◽  
Vol 702 ◽  
pp. 121720
Author(s):  
Li Cheng Kao ◽  
Xuefei Feng ◽  
Yang Ha ◽  
Feipeng Yang ◽  
Yi-Sheng Liu ◽  
...  
Keyword(s):  
Spectroscopic Investigation ◽  
X Ray ◽  
Electrolyte Interface ◽  
Molecular Scale ◽  
X Ray Absorption

scholarly journals L-Edge X-ray Absorption Spectroscopic Investigation of {FeNO}6: Delocalization vs Antiferromagnetic Coupling

2017 ◽  
Vol 139 (3) ◽  
pp. 1215-1225 ◽  
Author(s):  
James J. Yan ◽  
Margarita A. Gonzales ◽  
Pradip K. Mascharak ◽  
Britt Hedman ◽  
Keith O. Hodgson ◽  
...  
Keyword(s):  
Spectroscopic Investigation ◽  
Antiferromagnetic Coupling ◽  
X Ray ◽  
X Ray Absorption

scholarly journals Surface Chemistry Of Heterobimetallic Ge-M (M = Mo, W) Complexes In Zeolite Y

1991 ◽  
Vol 233 ◽  
Author(s):  
Aticha Borvornwattananont ◽  
Karin Moller ◽  
Thomas Bein
Keyword(s):  
Room Temperature ◽  
Zeolite Y ◽  
In Situ Ftir ◽  
Nay Zeolite ◽  
Zeolite Framework ◽  
Hy Zeolite ◽  
X Ray ◽  
Proton Form ◽  
X Ray Absorption

ABSTRACTThe intrazeolite chemistry of the two germylene complexes Cl2(THF)GeM(CO)5(M = Mo, W) was studied with x-ray absorption spectroscopy (Ge, Mo, W edge EXAFS) and in-situ FTIR/TPD-MS techniques. The slightly decarbonylated GeMo complex interacts with the framework of NaY zeolite at room temperature and retains the Ge-Mo bond up to about 100° C. In proton-loaded HY zeolite, framework interactions increase at elevated temperature, and the attached complex retains the Ge-Mo bond up to about 120° C. The Ge-Mo bond is cleaved at higher temperatures. MoC1x and Mo-Mo species are formed in NaY and HY zeolite, respectively, while GeClx fragments are anchored to the zeolite framework.The complex Cl2 (THF)GeW(CO) 5 retains all five CO ligands up to about 100° C in both NaY and the proton form. Detectable anchoring occurs at room temperature in NaY and at about 80° C in the proton form. WC1x species are formed upon cleavage of the Ge-W bond at higher temperatures.

A study of cation environment and movement during dehydration and reduction of nickel-exchanged zeolite Y by x-ray absorption and diffraction

1991 ◽  
Vol 95 (11) ◽  
pp. 4514-4521 ◽  
Author(s):  
E. Dooryhee ◽  
C. R. A. Catlow ◽  
J. W. Couves ◽  
P. J. Maddox ◽  
J. M. Thomas ◽  
...  
Keyword(s):  
Zeolite Y ◽  
X Ray ◽  
X Ray Absorption

A core-level spectroscopic investigation of the preparation and electrochemical cycling of nitrogen-modified carbon as a model catalyst support

2016 ◽  
Vol 4 (2) ◽  
pp. 443-450 ◽  
Author(s):  
Steven T. Christensen ◽  
Dennis Nordlund ◽  
Timothy Olson ◽  
Katherine E. Hurst ◽  
Arrelaine A. Dameron ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Spectroscopic Investigation ◽  
Catalyst Support ◽  
Carbon Support ◽  
Core Level ◽  
Model Catalyst ◽  
X Ray ◽  
Electrochemical Processes ◽  
Electrochemical Cycling ◽  
X Ray Absorption

X-ray absorption spectroscopy shows the dramatic changes a nitrogen modified carbon support can undergo due to electrochemical processes.

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