TY - JOUR
T1 - Zeolite y Mother Liquor Modified γ-Al2O3 with Enhanced Brönsted Acidity as Active Matrix to Improve the Performance of Fluid Catalytic Cracking Catalyst
AU - Bai, Peng
AU - Xie, Mengjie
AU - Etim, Ubong J.
AU - Xing, Wei
AU - Wu, Pingping
AU - Zhang, Yanan
AU - Liu, Bowen
AU - Wang, Youhe
AU - Qiao, Ke
AU - Yan, Zifeng
N1 - Publisher Copyright:
© 2018 American Chemical Society.
PY - 2018/2/7
Y1 - 2018/2/7
N2 - A new matrix material for the fluid catalytic cracking (FCC) catalyst was prepared using the zeolite Y mother liquor to modify the surface acidity of γ-Al2O3. The modified γ-Al2O3 was characterized using a variety of techniques, and the relationship between surface acidity and catalytic performances in the catalytic cracking of vacuum gas oil (VGO) was correlated. Characterization results showed that Brönsted acid sites derived mainly from isolated silanol groups, which increased on modified γ-Al2O3, while Lewis acid sites reduced dramatically after modification. Correlation results indicated that increased Brönsted acid sites effectively improved the conversion of VGO. In addition, new medium strong acid sites engendered at the interfaces of γ-Al2O3/amorphous silica-alumina or γ-Al2O3/zeolite Y played a critical role in determining the final product distribution, leading to yields of gasoline and liquefied petroleum gas higher than those of the pure γ-Al2O3 derived catalyst.
AB - A new matrix material for the fluid catalytic cracking (FCC) catalyst was prepared using the zeolite Y mother liquor to modify the surface acidity of γ-Al2O3. The modified γ-Al2O3 was characterized using a variety of techniques, and the relationship between surface acidity and catalytic performances in the catalytic cracking of vacuum gas oil (VGO) was correlated. Characterization results showed that Brönsted acid sites derived mainly from isolated silanol groups, which increased on modified γ-Al2O3, while Lewis acid sites reduced dramatically after modification. Correlation results indicated that increased Brönsted acid sites effectively improved the conversion of VGO. In addition, new medium strong acid sites engendered at the interfaces of γ-Al2O3/amorphous silica-alumina or γ-Al2O3/zeolite Y played a critical role in determining the final product distribution, leading to yields of gasoline and liquefied petroleum gas higher than those of the pure γ-Al2O3 derived catalyst.
UR - http://www.scopus.com/inward/record.url?scp=85041946578&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.7b04243
DO - 10.1021/acs.iecr.7b04243
M3 - 文章
AN - SCOPUS:85041946578
SN - 0888-5885
VL - 57
SP - 1389
EP - 1398
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 5
ER -