Enhancing FCC gasoline desulfurization performance in a polyphosphazene pervaporative membrane

► Cl-PBPP is firstly investigated in FCC gasoline desulfurization. ► Normalized PSI is average 12 times increased compared with PTFEP. ► Trade-off effect is eliminated by self-crosslinking at room temperature. ► Cl-PBPP performance is stable to the change in feed sulfur content.