n406677SE Academic Article uri icon

abstract

  • 2019 American Chemical Society. Polycrystalline zeolitic imidazolate framework ZIF-8 membranes have shown great potential for energy-efficient propylene/propane separation. Their large-scale applications are, however, hampered by the lack of facile and cost-effective processing technologies for ultrathin ZIF-8 membranes on scalable substrates. Here, we report facile preparation of ultrathin ZIF-8 membranes on the bore side of Matrimid hollow fibers based on a polymer modification strategy. Site-selective nature of the method enables a positional control over locations (i.e., bore or shell side) of active ZIF-8 layers on the hollow fibers. The ZIF-8 membranes grown on the bore side of Matrimid hollow fibers with polydimethylsiloxane coating displayed an average propylene permeance and a separation factor of 152 10-10 molm-2Pa-1s-1 and 55, respectively. Optimization of ZIF-8 seeding step resulted in an improvement in propylene permeance (369 10-10 molm-2Pa-1s-1) while maintaining relatively high separation factor (40).

published proceedings

  • Industrial & Engineering Chemistry Research

author list (cited authors)

  • Abdul Hamid, M. R., Park, S., Kim, J. S., Lee, Y. M., & Jeong, H.

publication date

  • January 1, 2019 11:11 AM