In Situ FT-IR Spectroscopic Studies of CO Adsorption on Fresh Mo2C/Al2O3Catalyst

2003 ◽  
Vol 107 (29) ◽  
pp. 7088-7094 ◽  
Author(s):  
Weicheng Wu ◽  
Zili Wu ◽  
Changhai Liang ◽  
Xiaowei Chen ◽  
Pinliang Ying ◽  
...  
Keyword(s):  
Co Adsorption ◽  
Spectroscopic Studies ◽  
Ft Ir ◽  
Ir Spectroscopic

In situ FT-IR spectroscopic studies of curing reaction of HTPB and TDI on solid surface

2016 ◽  
Vol 33 (5) ◽  
pp. 452 ◽  
Author(s):  
Cuihua Li ◽  
Tao Luo ◽  
Xiaoxue Zhang ◽  
Jianhong Liu ◽  
Aimin Pang ◽  
...  
Keyword(s):  
Solid Surface ◽  
Spectroscopic Studies ◽  
Curing Reaction ◽  
Ft Ir ◽  
Ir Spectroscopic

scholarly journals In Situ FT-IR Spectroscopic Study of CO2 and CO Adsorption on Y2O3, ZrO2, and Yttria-Stabilized ZrO2

2013 ◽  
Vol 117 (34) ◽  
pp. 17666-17673 ◽  
Author(s):  
Eva-Maria Köck ◽  
Michaela Kogler ◽  
Thomas Bielz ◽  
Bernhard Klötzer ◽  
Simon Penner
Keyword(s):  
Spectroscopic Study ◽  
Co Adsorption ◽  
Ft Ir ◽  
Ir Spectroscopic

IN-SITU FT-IR SPECTROSCOPIC STUDIES OF FUEL CELL ELECTRO-CATALYSIS: FROM SINGLE-CRYSTAL TO NANOPARTICLE SURFACES

2007 ◽  
Vol 195 (2) ◽  
pp. 147-166 ◽  
Author(s):  
W. F. Lin ◽  
J. M. Jin ◽  
P. A. Christensen ◽  
F. Zhu ◽  
Z. G. Shao
Keyword(s):  
Fuel Cell ◽  
Single Crystal ◽  
Spectroscopic Studies ◽  
Electro Catalysis ◽  
Ft Ir ◽  
Ir Spectroscopic

scholarly journals Experimental and Theoretical Studies of Sonically Prepared Cu–Y, Cu–USY and Cu–ZSM-5 Catalysts for SCR deNOx

Catalysts ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 824
Author(s):  
Przemysław J. Jodłowski ◽  
Izabela Czekaj ◽  
Patrycja Stachurska ◽  
Łukasz Kuterasiński ◽  
Lucjan Chmielarz ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Ultrasonic Irradiation ◽  
Active Phase ◽  
Spectroscopic Studies ◽  
In Situ Drifts ◽  
Ft Ir ◽  
Diffuse Reflectance Infrared ◽  
Experimental And Theoretical Studies

The objective of our study was to prepare Y-, USY- and ZSM-5-based catalysts by hydrothermal synthesis, followed by copper active-phase deposition by either conventional ion-exchange or ultrasonic irradiation. The resulting materials were characterized by XRD, BET, SEM, TEM, Raman, UV-Vis, monitoring ammonia and nitrogen oxide sorption by FT-IR and Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS). XRD data confirmed the purity and structure of the Y/USY or ZSM-5 zeolites. The nitrogen and ammonia sorption results indicated that the materials were highly porous and acidic. The metallic active phase was found in the form of cations in ion-exchanged zeolites and in the form of nanoparticle metal oxides in sonochemically prepared catalysts. The latter showed full activity and high stability in the SCR deNOx reaction. The faujasite-based catalysts were fully active at 200–400 °C, whereas the ZSM-5-based catalysts reached 100% activity at 400–500 °C. Our in situ DRIFTS experiments revealed that Cu–O(NO) and Cu–NH3 were intermediates, also indicating the role of Brønsted sites in the formation of NH4NO3. Furthermore, the results from our experimental in situ spectroscopic studies were compared with DFT models. Overall, our findings suggest two possible mechanisms for the deNOx reaction, depending on the method of catalyst preparation (i.e., conventional ion-exchange vs. ultrasonic irradiation).

CP-MAS and FT-IR spectroscopic studies of new derivatives of gossypol in solid

2005 ◽  
Vol 751 (1-3) ◽  
pp. 151-155 ◽  
Author(s):  
Piotr Przybylski ◽  
Grzegorz Bejcar ◽  
Wojciech Schilf ◽  
Bogumil Brzezinski ◽  
Franz Bartl
Keyword(s):  
Spectroscopic Studies ◽  
Ft Ir ◽  
Ir Spectroscopic ◽  
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