Novel Method for Generating Large Mesopores in an Amorphous Silica–Alumina by Controlling the Pore Size with the Gel Skeletal Reinforcement and Its Catalytic Cracking Properties as a Catalyst Matrix

2011 ◽  
Vol 40 (6) ◽  
pp. 558-560 ◽  
Author(s):  
Atsushi Ishihara ◽  
Kohei Nakajima ◽  
Motoki Hirado ◽  
Tadanori Hashimoto ◽  
Hiroyuki Nasu
Keyword(s):  
Pore Size ◽  
Amorphous Silica ◽  
Catalytic Cracking ◽  
Silica Alumina ◽  
Novel Method ◽  
Large Mesopores

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

A Novel Method To Synthesize Amorphous Silica−Alumina Materials with Mesoporous Distribution without Using Templates and Pore-Regulating Agents

2002 ◽  
Vol 14 (1) ◽  
pp. 122-129 ◽  
Author(s):  
Nan Yao ◽  
Guoxing Xiong ◽  
Mingyuan He ◽  
Shishan Sheng ◽  
Weishen Yang ◽  
...  
Keyword(s):  
Amorphous Silica ◽  
Silica Alumina ◽  
Novel Method

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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