Separation and Purification Technology, Volume 109, 9 May 2013, Pages
48–54
Enhancing FCC gasoline desulfurization
performance in a polyphosphazene pervaporative membrane
Zheng-Jin Yang, Zhi-Qiang Wang, Jiding Li,
Jin-Xun Chen
The State Key Laboratory of Chemical Engineering, Department of Chemical
Engineering, Tsinghua University, Beijing 100084, PR China
Abstract
Pervaporation is a promising process in FCC
gasoline deep desulfurization. The membrane plays a decisive role in the process.
Researchers studied a membrane with high desulfurization performance. They studied its pervaporation performance
using FCC model gasoline composed of thiophene and heptane.
They created the membrane from chlorine
incompletely substituted poly [bis (phenoxy) phosphazene] (Cl-PBPP) followed by
simple self-crosslinking at room temperature. Compared with previous experiments,
the Cl-PBPP is 12 times increased in pervaporation separation index.
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