Preparation of amorphous silica-alumina using polyethylene glycol and its role for matrix in catalytic cracking of n-dodecane

2014 ◽  
Vol 478 ◽  
pp. 58-65 ◽  
Author(s):  
Atsushi Ishihara ◽  
Takanori Wakamatsu ◽  
Hiroyuki Nasu ◽  
Tadanori Hashimoto
Keyword(s):  
Polyethylene Glycol ◽  
Amorphous Silica ◽  
Catalytic Cracking ◽  
Silica Alumina

scholarly journals Catalytic Properties of Amorphous Silica-alumina Prepared Using Dicarboxylic and Tricarboxylic Acids as Matrix in Catalytic Cracking of n-Dodecane

2011 ◽  
Vol 54 (3) ◽  
pp. 189-200 ◽  
Author(s):  
Atsushi Ishihara ◽  
Hirotaka Negura ◽  
Kentarou Inui ◽  
Tadanori Hashimoto ◽  
Hiroyuki Nasu
Keyword(s):  
Amorphous Silica ◽  
Catalytic Cracking ◽  
Catalytic Properties ◽  
Silica Alumina

Catalytic properties of amorphous silica-alumina prepared using malic acid as a matrix in catalytic cracking of n-dodecane

2010 ◽  
Vol 388 (1-2) ◽  
pp. 68-76 ◽  
Author(s):  
Atsushi Ishihara ◽  
Hirotaka Negura ◽  
Tadanori Hashimoto ◽  
Hiroyuki Nasu
Keyword(s):  
Amorphous Silica ◽  
Malic Acid ◽  
Catalytic Cracking ◽  
Catalytic Properties ◽  
Silica Alumina

Fluidized Catalytic Cracking Catalyst Microstructure as Determined by A Scanning Ion Microprobe

1990 ◽  
Vol 48 (2) ◽  
pp. 302-303
Author(s):  
J.K. Lampert ◽  
G.S. Koermer ◽  
J.M. Macaoy ◽  
J.M. Chabala ◽  
R. Levi-Setti
Keyword(s):  
Catalytic Cracking ◽  
Secondary Ion Mass Spectrometry ◽  
Fuel Oil ◽  
Ion Microprobe ◽  
Fluidized Catalytic Cracking ◽  
Ion Probe ◽  
Silica Alumina ◽  
Resolution Imaging ◽  
The University ◽  
High Spatial Resolution Imaging

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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