Citation: ZHANG Le, LI Qiang, ZHAO Yue, QIN Yu-cai, GAO Xiong-hou, SONG Li-juan. Effect of Ce ion on adsorption and diffusion behavior of benzene in Y zeolite[J]. Journal of Fuel Chemistry and Technology, ;2017, 45(1): 84-92. shu

Effect of Ce ion on adsorption and diffusion behavior of benzene in Y zeolite

ZHANG Le ^1,2 ,
LI Qiang ² ,
ZHAO Yue ² ,
QIN Yu-cai ² ,
GAO Xiong-hou ³ ,
SONG Li-juan ^1,2,*,,

1.
College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China
2.
Liaoning Key Laboratory of Petrochemical Catalytic Science and Technology, Liaoning Shihua University, Fushun 113001, China
3.
Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China

Corresponding author: SONG Li-juan, tianhuikele@126.com; lsong56@263.net
Received Date: 14 September 2016
Revised Date: 3 November 2016

Fund Project: National Natural Science Foundation of China 21376114

Figures(9)

The liquid ion exchange method was employed to prepare cerium (Ce) cation modified Y zeolite (CeY) with various amount of cerium using different types of Y zeolite (HY, USY and NaY) and characterized by X-ray fluorescence spectrometry (XRF), intelligent gravimetric analyzer (IGA) and a molecular simulation technology (Grand Canonical Monte Carlo simulation, GCMC). A novel calculation method of desorption index (DI) has also been proposed to study the influence of cerium cations on the processes of adsorption-desorption of hydrocarbon molecule (benzene) on the CeY zeolites. The saturated adsorption capacity of benzene, adsorption interaction, desorption thermodynamic parameters, potential distribution curves and diffusion processes of benzene in CeY zeolites were analyzed. The results indicate that Ce ion can reduce the desorption activation energy, weaken the adsorption interaction force between benzene and Y zeolites, and modulate the adsorbed state of benzene molecules from agglomerate state to dispersed state, which are main factors to optimize the product selectivity of light oil components in the fluid catalytic cracking (FCC) process with CeY zeolite catalyst.
- catalysis,
- Y-type zeolite,
- surface,
- sorbents,
- product selectivity,
- Monte Carlo simulation
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