Activity and Selectivity of Fluidized Catalytic Cracking Catalysts in a Riser Simulator:  The Role of Y-Zeolite Crystal Size

1999 ◽  
Vol 38 (4) ◽  
pp. 1350-1356 ◽  
Author(s):  
S. Al-Khattaf ◽  
H. de Lasa
Keyword(s):  
Catalytic Cracking ◽  
Crystal Size ◽  
Zeolite Crystal ◽  
Y Zeolite ◽  
Fluidized Catalytic Cracking ◽  
Cracking Catalysts

An analytical microscopic study of metals in fluidized catalytic cracking catalyst

1986 ◽  
Vol 44 ◽  
pp. 854-855
Author(s):  
Clifford S. Rainey
Keyword(s):  
Electron Microscopy ◽  
Spatial Distribution ◽  
Catalytic Cracking ◽  
Catalyst Deactivation ◽  
Coke Formation ◽  
Acid Sites ◽  
Y Zeolite ◽  
Fcc Catalyst ◽  
Fluidized Catalytic Cracking ◽  
High Regeneration

The spatial distribution of V and Ni deposited within fluidized catalytic cracking (FCC) catalyst is studied because these metals contribute to catalyst deactivation. Y zeolite in FCC microspheres are high SiO2 aluminosilicates with molecular-sized channels that contain a mixture of lanthanoids. They must withstand high regeneration temperatures and retain acid sites needed for cracking of hydrocarbons, a process essential for efficient gasoline production. Zeolite in combination with V to form vanadates, or less diffusion in the channels due to coke formation, may deactivate catalyst. Other factors such as metal "skins", microsphere sintering, and attrition may also be involved. SEM of FCC fracture surfaces, AEM of Y zeolite, and electron microscopy of this work are developed to better understand and minimize catalyst deactivation.

Aluminum phosphate as active matrix of fluid catalytic cracking catalysts: Y zeolite stabilization

2021 ◽  
Vol 619 ◽  
pp. 118156
Author(s):  
Eliana Carmo de Souza ◽  
Marcelo Maciel Pereira ◽  
Yiu Lau Lam ◽  
Edisson Morgado ◽  
Luiz Silvino Chinelatto
Keyword(s):  
Catalytic Cracking ◽  
Aluminum Phosphate ◽  
Fluid Catalytic Cracking ◽  
Y Zeolite ◽  
Active Matrix ◽  
Cracking Catalysts

Hydrocarbon Yield Structure in the Conversion of Heavy Model Molecules (Quinolin-65) on Fluidized Catalytic Cracking Catalysts

2012 ◽  
Vol 26 (8) ◽  
pp. 5015-5019 ◽  
Author(s):  
Alejandra Devard ◽  
Richard Pujro ◽  
Gabriela de la Puente ◽  
Ulises Sedran
Keyword(s):  
Catalytic Cracking ◽  
Fluidized Catalytic Cracking ◽  
Yield Structure ◽  
Hydrocarbon Yield ◽  
Cracking Catalysts

Y zeolite equilibrium catalyst waste from fluidized catalytic cracking regenerated by electrokinetic treatment: An adsorbent for sulphur and nitrogen compounds

2018 ◽  
Vol 96 (12) ◽  
pp. 2593-2601
Author(s):  
Thamayne Valadares de Oliveira ◽  
Renata Bachmann Guimarães Valt ◽  
Haroldo de Araújo Ponte ◽  
Maria José Jerônimo de Santana Ponte ◽  
Carlos Itsuo Yamamoto ◽  
...  
Keyword(s):  
Catalytic Cracking ◽  
Nitrogen Compounds ◽  
Y Zeolite ◽  
Electrokinetic Treatment ◽  
Fluidized Catalytic Cracking ◽  
Equilibrium Catalyst

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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