Amine-functionalized metal organic framework (NH2-MIL-125(Ti)) incorporated sodium alginate mixed matrix membranes for dehydration of acetic acid by pervaporation. Issue 120 (19th November 2015)

• Record Type: Journal Article
• Authors: Su, Zhenbo; Chen, Jian Hua; Sun, Xue; Huang, Yihong; Dong, Xinfei
• Is Part Of: RSC advances. Volume 5:Issue 120(2015)
• Page Start: 99008
• Page End: 99017
• Publication Date: 2015-11-19
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra21073a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : In the present paper, amine-functionalized metal organic framework (NH2 -MIL-125(Ti)) crystal nanoparticles were synthesized and incorporated into a sodium alginate (NaAlg) matrix to prepare novel NH2 -MIL-125(Ti)/NaAlg mixed matrix membranes (MMMs). Abstract : In the present paper, amine-functionalized metal organic framework (NH2 -MIL-125(Ti)) crystal nanoparticles were synthesized and incorporated into a sodium alginate (NaAlg) matrix to prepare novel NH2 -MIL-125(Ti)/NaAlg mixed matrix membranes (MMMs). The prepared NH2 -MIL-125(Ti) crystal nanoparticles and NH2 -MIL-125(Ti)/NaAlg MMMs were characterized by the Fourier transformed infrared spectrum, X-ray diffraction, atomic force microscopy, transmission electron microscopy and contact angle goniometer. The pervaporation performance of the as-prepared NH2 -MIL-125(Ti)/NaAlg MMMs have been tested and compared with a pristine NaAlg membrane for dehydrating acetic acid. The experimental results indicated that amine-functionalized NH2 -MIL-125(Ti) crystal nanoparticles were confirmed as a promising filler to improve the separation performance of NH2 -MIL-125(Ti)/NaAlg MMMs for water and acetic acid mixtures. Both the flux and selectivity of the NH2 -MIL-125(Ti)/NaAlg MMMs were significantly improved by incorporating 6 wt% of NH2 -MIL-125(Ti) nanoparticles. The pervaporation performances of NH2 -MIL-125(Ti)/NaAlg-6 MMMs were greatly influenced by feed temperature, feed acetic acid concentration and feed flow rate. In a word, the as-prepared NH2 -MIL-125(Ti)/NaAlg MMMs could be considered as potential candidates for practical acetic acid dehydration.