Zeolitic imidazolate framework membranes made by ligand-induced permselectivation

• DOI: 10.1126/science.aat4123
• Publication Date: 2018-09-06T18:06:35Z
• Authors: Xiaoli Ma; Prashant Kumar; Nitish Mittal; Alexandra Khlyustova; Prodromos Daoutidis; K. Andre Mkhoyan; Michael Tsapatsis
• Keywords: Zeolitic imidazolate framework; Propane; Imidazolate

Zeolitic imidazolate framework (ZIF) membranes are emerging as a promising energy-efficient separation technology. However, their reliable and scalable manufacturing remains challenge. We demonstrate the fabrication of ZIF nanocomposite by means an all-vapor-phase processing method based on atomic layer deposition (ALD) ZnO in porous support followed ligand-vapor treatment. After ALD, obtained exhibits low flux is not selective, whereas after (2-methylimidazole) treatment, it partially transformed to shows stable performance with high mixture factor for propylene over propane (an energy-intensive high-volume separation) flux. Membrane synthesis through ligand-induced permselectivation nonselective impermeable deposit shown be simple highly reproducible holds promise scalability.