Catalyst Characterization

2008 ◽  
pp. 1-6
Keyword(s):  
Catalyst Characterization

Quantitative nano-characterization of heterogeneous catalysts

1995 ◽  
Vol 53 ◽  
pp. 398-399
Author(s):  
P.A. Crozier ◽  
M. Pan
Keyword(s):  
Heterogeneous Catalysts ◽  
Low Dose ◽  
Imaging Techniques ◽  
Structural Features ◽  
Catalyst Characterization ◽  
New Developments ◽  
Double Phase ◽  
Phase Systems ◽  
Dose Imaging

Heterogeneous catalysts can be of varying complexity ranging from single or double phase systems to complicated mixtures of metals and oxides with additives to help promote chemical reactions, extend the life of the catalysts, prevent poisoning etc. Although catalysis occurs on the surface of most systems, detailed descriptions of the microstructure and chemistry of catalysts can be helpful for developing an understanding of the mechanism by which a catalyst facilitates a reaction. Recent years have seen continued development and improvement of various TEM, STEM and AEM techniques for yielding information on the structure and chemistry of catalysts on the nanometer scale. Here we review some quantitative approaches to catalyst characterization that have resulted from new developments in instrumentation.HREM has been used to examine structural features of catalysts often by employing profile imaging techniques to study atomic details on the surface. Digital recording techniques employing slow-scan CCD cameras have facilitated the use of low-dose imaging in zeolite structure analysis and electron crystallography. Fig. la shows a low-dose image from SSZ-33 zeolite revealing the presence of a stacking fault.

The coupled CuO-SnO2 catalyst: Characterization and the photodegradation kinetics towards phenazopyridine

2021 ◽  
pp. 101496
Author(s):  
Ailin Yousefi ◽  
Alireza Nezamzadeh-Ejhieh ◽  
Mehrosadat Mirmohammadi
Keyword(s):  
Catalyst Characterization

Manual on catalyst characterization (Recommendations 1991)

1991 ◽  
Vol 63 (9) ◽  
pp. 1227-1246 ◽  
Author(s):  
J. Haber
Keyword(s):  
Catalyst Characterization

Incorporation of Mg and Cu metals to CoFe2O4 catalyst: Characterization and methane cracking performance for hydrogen and nano-carbon production

2021 ◽  
Author(s):  
Abdulrahman I. Alharthi ◽  
Mshari A. Alotaibi ◽  
Israf Ud Din ◽  
E. Abdel-Fattah ◽  
Md Afroz Bakht ◽  
...  
Keyword(s):  
Catalyst Characterization ◽  
Carbon Production ◽  
Cracking Performance ◽  
Nano Carbon ◽  
Methane Cracking

scholarly journals Catalyst characterization in the presence of solvent: development of liquid phase structure–activity relationships

2018 ◽  
Vol 9 (2) ◽  
pp. 281-287 ◽  
Author(s):  
Nicholas S. Gould ◽  
Bingjun Xu
Keyword(s):  
Mass Transfer ◽  
Liquid Phase ◽  
Phase Structure ◽  
Catalyst Surface ◽  
Catalyst Characterization ◽  
Structure Activity Relationships ◽  
Structure Activity

Due to the low volatility and highly oxygenated nature of biomass derived feedstocks, biomass upgrade reactions are frequently conducted in the presence of solvent to improve substrate mass transfer to the catalyst surface.

Reversible Immobilization of a Molecular Catalyst and Challenges of Catalyst Characterization

2009 ◽  
Vol 15 (36) ◽  
pp. 9183-9190 ◽  
Author(s):  
R. Palkovits ◽  
D. Arlt ◽  
H. Stepowska ◽  
F. Schüth
Keyword(s):  
Catalyst Characterization ◽  
Molecular Catalyst ◽  
Reversible Immobilization

Catalyst Characterization Science

1986 ◽  
Vol 58 (1) ◽  
pp. 103A-103A
Keyword(s):  
Catalyst Characterization
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