丁醇回收

Abstract(#br)In this work, ceramic hollow fiber supported polydimethylsiloxane (PDMS) composite membranes were developed by dip-coating PDMS layer on the surface of macroporous ceramic hollow fiber support. By controlling the properties of polymer solution and ceramic hollow fiber, high-quality ceramic hollow fiber supported PDMS composite membranes were fabricated for pervaporation (PV) recovery of bio-butanol.

摘要\n联苯基共价三嗪骨架( CTF )粒子作为一类新型的有机多孔材料，被掺入聚二甲基硅氧烷( PDMS )中，制备了用于正丁醇( n- BtOH )回收的高性能渗透汽化膜。增加CTF的负载量显著提高了膜的通量和分离因子。这是由于CTF的强疏水性、高孔性和介孔结构为n- BtOH提供了高透水性和择优性的通道，重要的是，与其他报道的含常规微孔粒子的PDMS基混合基质膜相比，CTF / PDMS ( CTF / PDMS )膜具有更高的通量和更好的分离因子。提高进料温度和n- BtOH浓度进一步增强了渗透汽化性能。因此，将含12.5 wt % CTF的CTF / PDMS膜与4 wt %的n- BtOH进料液在60℃下操作时，n- BtOH的回收率最高(总渗透通量2816±118 g m-2 h-1，分离因子62.8±1.5，渗透n- BtOH浓度71.5±2.7 wt % )。