Comparison of Post-Treatment Methods on the Performance of Hollow Fiber Membranes Containing Metal Organic Framework in Gases Separation

Muhammad Mubashir, Yin Fong Yeong, Thiam Leng Chew, Kok Keong Lau

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

In the current work, thermal treatment, PDMS coating, and combined thermal treatment with PDMS coating methods were applied over NH2-MIL-53(Al)/cellulose acetate (CA) hollow fiber mixed matrix membranes (HFMMM) for CO2/CH4 and CO2/N2 separation. The results showed that upon thermal treatment at 170 °C, CO2/CH4 and CO2/N2 gas pair selectivities of HFMMM were improved from 9.1 to 9.9 and 7.7 to 8.4, respectively. On the other hand, CO2/CH4 and CO2/N2 gas pair selectivities of HFMMMs were improved from 9.1 to 14.1 and 7.7 to 12.0, respectively, after thermal treatment at 220 °C. Substantial increment in gas pair selectivities of the thermally treated fibers was mainly due to polymer densification, which condensed the voids between polymer and particles. Subsequently, PDMS-coated HFMMMs exhibited gas pair selectivities of 17.0 and 16.2, respectively, which were higher compared to the untreated and thermally treated HFMMM. Highest improvement of CO2/CH4 and CO2/N2 gas pair selectivities were found for combined post-treated HFMMM with selectivities values of 26.6 and 24.9, respectively. This result was due to the combined effect of polymer densification and penetration of PDMS solution in the CA matrix which contributed to the suppression of nonselective voids. Hence, this work suggests that combined thermal treatment with PDMS coating method could be feasible and efficient for the improvement of performance of HFMMMs in gases separation.
Original languageEnglish (US)
Pages (from-to)7120-7130
Number of pages11
JournalIndustrial and Engineering Chemistry Research
Volume58
Issue number17
DOIs
StatePublished - May 1 2019
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-20

ASJC Scopus subject areas

  • General Chemical Engineering
  • General Chemistry
  • Industrial and Manufacturing Engineering

Fingerprint

Dive into the research topics of 'Comparison of Post-Treatment Methods on the Performance of Hollow Fiber Membranes Containing Metal Organic Framework in Gases Separation'. Together they form a unique fingerprint.

Cite this