Spatially resolved in situ FTIR analysis of CO adsorption and reaction on Pt/SiO2 in a silicon microreactor

2009 ◽  
Vol 93 (1-2) ◽  
pp. 66-74 ◽  
Author(s):  
Chung Kwang Christopher Tan ◽  
W. Nicholas Delgass ◽  
Chelsey D. Baertsch
Keyword(s):  
Co Adsorption ◽  
Ftir Analysis ◽  
In Situ Ftir ◽  
Spatially Resolved

In situ FTIR analysis for the determination of imidization degree of polyimide precursors

Polymer ◽  
2021 ◽  
pp. 124416
Author(s):  
Yuanming Zhang ◽  
Nafeesa Mushtaq ◽  
Xingzhong Fang ◽  
Guofei Chen
Keyword(s):  
Ftir Analysis ◽  
In Situ Ftir

scholarly journals Determining the Location of Co2+ in Zeolites by UV-Vis Diffuse Reflection Spectroscopy: A Critical View

Catalysts ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 123 ◽  
Author(s):  
Andrea Bellmann ◽  
Christine Rautenberg ◽  
Ursula Bentrup ◽  
Angelika Brückner
Keyword(s):  
Diffuse Reflection ◽  
Co Adsorption ◽  
In Situ Ftir ◽  
Diffuse Reflection Spectroscopy ◽  
Reflection Spectroscopy ◽  
Oxide Supports ◽  
In Situ Ftir Spectroscopy ◽  
Vis Spectroscopy

UV–Vis spectroscopy as well as in situ FTIR spectroscopy of pyridine and CO adsorption were applied to determine the nature of Co species in microporous, mesoporous, and mixed oxide materials like Co–ZSM-5, Co/Na–ZSM-5, Co/Al–SBA-15, and Co/Al2O3–SiO2. Because all sample types show comparable UV–Vis spectra with a characteristic band triplet, the former described UV–Vis band deconvolution method for determination and quantification of individual cationic sites in the zeolite appears doubtful. This is also confirmed by results of pyridine and CO adsorption revealing that all Co–zeolite samples contain two types of Co2+ species located at exchange positions as well as in oxide-like clusters independent of the Co content, while in Co/Al–SBA-15 and Co/Al2O3–SiO2 only Co2+ species in oxide-like clusters occur. Consequently, the measured UV–Vis spectra represent not exclusively isolated Co2+ species, and the characteristic triplet band is not only related to γ-, β-, and α-type Co2+ sites in the zeolite but also to those dispersed on the surface of different oxide supports. The study demonstrates that for proper characterization of the formed Co species, the use of complementary methods is required.

scholarly journals Effect of Pt cocatalyst in Pt/TiO2 studied by in situ FTIR of CO adsorption

2014 ◽  
Vol 35 (11) ◽  
pp. 1900-1906 ◽  
Author(s):  
Shuai Shen ◽  
Xiuli Wang ◽  
Qian Ding ◽  
Shaoqing Jin ◽  
Zhaochi Feng ◽  
...  
Keyword(s):  
Co Adsorption ◽  
In Situ Ftir

Effect of pyridine extraction on the pyrolysis of a perhydrous coal based on in-situ FTIR analysis

2019 ◽  
Vol 92 (3) ◽  
pp. 428-437 ◽  
Author(s):  
Zhiyuan Niu ◽  
Guijian Liu ◽  
Hao Yin ◽  
Chuncai Zhou ◽  
Dun Wu ◽  
...  
Keyword(s):  
Ftir Analysis ◽  
In Situ Ftir

In Situ FTIR Analysis of the Evolution of Functional Groups of Oil Shale During Pyrolysis

2016 ◽  
Vol 30 (7) ◽  
pp. 5611-5616 ◽  
Author(s):  
Bin Chen ◽  
Xiangxin Han ◽  
Xiumin Jiang
Keyword(s):  
Functional Groups ◽  
Oil Shale ◽  
Ftir Analysis ◽  
In Situ Ftir
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