Sorption Enhanced Mixed Matrix Membranes for H2 Purification and CO2 Capture

Gang Wu Lab

Sorption Enhanced Mixed Matrix Membranes for H2 Purification and CO2 Capture

The goal of this project is to develop sorption enhanced mixed matrix membranes with H₂ permeance of 500 gas permeance units (gpu) and H₂/CO₂ selectivity of 30 at 150-200 °C. 

Overview

These membranes will be the central component in the design of membrane‑based systems for 90% capture of CO₂ from coal-derived syngas, with 95% CO₂ purity at a cost of electricity 30% less than baseline capture approaches. In this project, Pd nanoparticles are synthesized and dispersed in the polymer matrix to provide high H₂ solubility and permeability. This project is funded by the Department of Energy National Energy Technology Laboratory.

Resulting Publications

  • L. X. Zhu, M. T. Swihart, H. Q. Lin, “Unprecedented size-sieving ability in polybenzimidazole doped with polyprotic acids for membrane H-2/CO2 separation”, Energy Environ. Sci. 11, 94-100 (2018). [Read here]
  • L. X. Zhu, M. T. Swihart, H. Q. Lin, “Tightening polybenzimidazole (PBI) nanostructure via chemical cross-linking for membrane H-2/CO2 separation”, Journal of Materials Chemistry A 5, 19914-19923 (2017). [Read here]

Students on this Project

  • Lingxiang Zhu (PhD)
  • Maryam Omidvar (PhD)
  • Hien Nguyen (PhD)
  • Liang Huang (Postdoc)