Study of different titanosilicate (TS-1 and ETS-10) as fillers for Mixed Matrix Membranes for COinf2/inf/CHinf4/inf gas separation applications

0506651 - ÚFCH JH 2020 RIV NL eng J - Journal Article
Martin-Gil, V. - López, A. - Hrabánek, Pavel - Mallada, R. - Vankelecom, I. F.J. - Fíla, V.
Study of different titanosilicate (TS-1 and ETS-10) as fillers for Mixed Matrix Membranes for COinf2/inf/CHinf4/inf gas separation applications.
Journal of Membrane Science. Roč. 523, FEB 2017 (2017), s. 24-35. ISSN 0376-7388. E-ISSN 1873-3123
Grant - others:GA ČR(CZ) GA15-06479S
Institutional support: RVO:61388955
Keywords : CO /CH separation 2 4 * ets-10 * Mixed Matrix Membrane * Titanosilicate * ts-1
OECD category: Physical chemistry
Impact factor: 6.578, year: 2017
Method of publishing: Limited access

Three titanosilicate zeolites were used as fillers for Mixed Matrix Membranes: (i) ETS-10, (ii) TS-1 having Si/Ti=100 and (iii) TS-1 using Si/Ti=25. Zeolite samples were characterized by X-Ray Diffraction, Scanning Electron Microscopy, Atomic Emission Spectroscopy, X-Ray Photoelectron Spectroscopy, and CO2 and CH4 adsorption isotherms. TS-1 particles showed a narrow size distribution ranging from 200 nm to 400 nm. In the case of ETS-10, the size distribution was broader ranging from 400 nm to 800 nm. Mixed Matrix Membranes were prepared using Matrimid® polyimide as continuous phase and filler loadings of 10, 20, and 30 wt%. Membranes were characterized by Thermogravimetric Analysis, Differential Scanning Calorimetry, and Scanning Electron Microscopy. The performances was measured at 8 bars of transmembrane pressure for CO2/CH4 mixed gases system at 50/50 vol/vol. concentration. Membranes using TS-1 (Si/Ti=25) as filler showed a maximum increase of 89.1% of CO2 permeability and 23.9% increase in separation factor. In the case of TS-1 (Si/Ti=100) only permeability increased significantly, with a maximum increase of 90.1%. Regarding the ETS-10 membranes, both permeability and separation factor increased slightly with respect to the reference polymeric membrane (22.5% in CO2 permeability and 7.8% in the separation factor). In conclusion, TS-1 (Si/Ti=25) is the most suitable filler for the use in Mixed Matrix Membranes for gas separation applications among the titanosilicate studied in this work.
Permanent Link: http://hdl.handle.net/11104/0297856