Coke Formation during Catalytic Cracking of C8Aliphatic Hydrocarbons over Ultrastable Y Zeolite

2003 ◽  
Vol 42 (11) ◽  
pp. 2292-2298 ◽  
Author(s):  
Aristidis A. Brillis ◽  
George Manos
Keyword(s):  
Catalytic Cracking ◽  
Coke Formation ◽  
Y Zeolite

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.

Transformation of methanol to hydrocarbons over Y zeolites with varying Si/Al ratio

1987 ◽  
Vol 52 (7) ◽  
pp. 1701-1707 ◽  
Author(s):  
Miloslav Křivánek ◽  
Nguyen Thiet Dung ◽  
Pavel Jírů
Keyword(s):  
Catalytic Activity ◽  
Reaction Time ◽  
Coke Formation ◽  
Aliphatic Hydrocarbons ◽  
Y Zeolite ◽  
Y Zeolites ◽  
Methanol To Hydrocarbons

The catalytic activity of Na, H-Y zeolite samples with a varying Si/Al ratio (2·5 to 20) in the transformation of methanol was determined. The amounts of formed individual aliphatic hydrocarbons as function of reaction time were correlated with the amount of Bronsted and Lewis centres on the catalysts. The effect of coke formation on the over-all course of the reaction has been demonstrated.

A new composite consisting of Y zeolite and ZrO2 for fluid catalytic cracking reaction

2020 ◽  
Vol 200 ◽  
pp. 108317
Author(s):  
Wanrong Liu ◽  
Xinmei Liu ◽  
Yu Gu ◽  
Yuxiang Liu ◽  
Zhumo Yu ◽  
...  
Keyword(s):  
Catalytic Cracking ◽  
Fluid Catalytic Cracking ◽  
Y Zeolite ◽  
Cracking Reaction ◽  
Catalytic Cracking Reaction

Single-Event MicroKinetics for coke formation in catalytic cracking

2005 ◽  
Vol 107-108 ◽  
pp. 619-629 ◽  
Author(s):  
Roberto Quintana-Solórzano ◽  
Joris W. Thybaut ◽  
Guy B. Marin ◽  
Rune Lødeng ◽  
Anders Holmen
Keyword(s):  
Catalytic Cracking ◽  
Coke Formation ◽  
Single Event

Preparation of Y Zeolite-Based Catalysts and their Catalytic Cracking Performances of Venezuelan Heavy Oil

2012 ◽  
Vol 608-609 ◽  
pp. 1407-1412
Author(s):  
Peng Hui Zeng ◽  
Bao Jian Shen ◽  
Sheng Fu Ji ◽  
Yun Liang ◽  
Xiang Hai Meng
Keyword(s):  
Pore Structure ◽  
Heavy Oil ◽  
Catalytic Cracking ◽  
Product Distribution ◽  
Pore Distribution ◽  
Oil Yield ◽  
Y Zeolite ◽  
Acidic Properties ◽  
Cracking Performance ◽  
Adsorption Desorption

Five kinds of modified Y zeolite-based fluid catalytic cracking (FCC) catalysts were prepared. The N2 adsorption desorption and NH3 temperature-programmed-desorption (NH3-TPD) were used to investigate the pore structure and acidic properties of the catalysts. The effects of pore structure and acidic properties of catalysts on the catalytic cracking performance of Venezuelan heavy oil were carried out using an advanced cracking evaluation unit. The results of N2 adsorption desorption and NH3-TPD show that CAT-A and CAT-B catalysts with rundle pore distribution have a similar pore sizes and acidSubscript textSubscript textic properties. The catalytic cracking results show that the acidic properties and the pore distribution of the catalysts have obvious effects on the conversion and product distribution. The light oil yield and total liquid oil yield can reach 58.75wt% and 73.83 wt%, respectively, under reaction temperature of 520°C.

Perlite templated Y zeolite assembly and its potential as an efficient catalytic cracking catalyst

2017 ◽  
Vol 243 ◽  
pp. 130-134 ◽  
Author(s):  
Wennian Wang ◽  
Shanshan Kong ◽  
Xiaoxiao Zhou ◽  
Delin Yuan ◽  
Hao Li ◽  
...  
Keyword(s):  
Catalytic Cracking ◽  
Y Zeolite

Facile Fabrication of ZSM-5 Zeolite Catalyst with High Durability to Coke Formation during Catalytic Cracking of Paraffins

ACS Catalysis ◽  
2012 ◽  
Vol 3 (1) ◽  
pp. 74-78 ◽  
Author(s):  
Satoshi Inagaki ◽  
Shoma Shinoda ◽  
Yoshihiro Kaneko ◽  
Kazuyoshi Takechi ◽  
Raita Komatsu ◽  
...  
Keyword(s):  
Catalytic Cracking ◽  
Zeolite Catalyst ◽  
Coke Formation ◽  
High Durability ◽  
Facile Fabrication
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