scholarly journals Catalytic Cracking of VGO by Zeolite–kaolin Mixed Catalysts Using Curie Point Pyrolyzer

2015 ◽  
Vol 58 (3) ◽  
pp. 169-175 ◽  
Author(s):  
Atsushi ISHIHARA ◽  
Kentarou KIMURA ◽  
Tadanori HASHIMOTO ◽  
Hiroyuki NASU
2016 ◽  
Vol 59 (5) ◽  
pp. 184-196 ◽  
Author(s):  
Thanita SONTISAWATE ◽  
Hiroyuki NASU ◽  
Tadanori HASHIMOTO ◽  
Atsushi ISHIHARA

2012 ◽  
Vol 28 ◽  
pp. 163-167 ◽  
Author(s):  
Atsushi Ishihara ◽  
Kentarou Kimura ◽  
Atsushi Owaki ◽  
Kentarou Inui ◽  
Tadanori Hashimoto ◽  
...  

2015 ◽  
Vol 396 ◽  
pp. 310-318 ◽  
Author(s):  
Atsushi Ishihara ◽  
Daisuke Kawaraya ◽  
Thanita Sonthisawate ◽  
Kentaro Kimura ◽  
Tadanori Hashimoto ◽  
...  

Author(s):  
J.K. Lampert ◽  
G.S. Koermer ◽  
J.M. Macaoy ◽  
J.M. Chabala ◽  
R. Levi-Setti

We have used high spatial resolution imaging secondary ion mass spectrometry (SIMS) to differentiate mineralogical phases and to investigate chemical segregations in fluidized catalytic cracking (FCC) catalyst particles. The oil industry relies on heterogeneous catalysis using these catalysts to convert heavy hydrocarbon fractions into high quality gasoline and fuel oil components. Catalyst performance is strongly influenced by catalyst microstructure and composition, with different chemical reactions occurring at specific types of sites within the particle. The zeolitic portions of the particle, where the majority of the oil conversion occurs, can be clearly distinguished from the surrounding silica-alumina matrix in analytical SIMS images.The University of Chicago scanning ion microprobe (SIM) employed in this study has been described previously. For these analyses, the instrument was operated with a 40 keV, 10 pA Ga+ primary ion probe focused to a 30 nm FWHM spot. Elemental SIMS maps were obtained from 10×10 μm2 areas in times not exceeding 524s.


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