Development of silane modified TS-1 nanoparticles as fillers for Mixed Matrix Membranes (MMM’s)

0431120 - ÚFCH JH 2015 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Martin-Gil, V. - Lhotka, M. - Hrabánek, Pavel - Fíla, V.
Development of silane modified TS-1 nanoparticles as fillers for Mixed Matrix Membranes (MMM’s).
CHISA 2014 and PRES 2014 CD-ROM of Full Texts. Prague: Czech Society of Chemical Engineering, 2014, 0608. ISBN 978-80-02-02555-9.
[International Congress of Chemical and Process Engineering CHISA 2014 /21./ and Conference PRES 2014 /17./. Praha (CZ), 23.08.2014-27.08.2014]
Institucionální podpora: RVO:61388955
Klíčová slova: Titanium Silicalite 1 * nanoparticles * silane coupling agents
Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie

In this work, Titanium Silicalite 1 (TS-1) was synthesized using different crystallization temperature (Tc = 180 °C, 160°C, 140°C), aging time (t aging = 1, 2, 3 and 7 days) and aging temperature (T aging = T room , 40 °C, 80°C) in order to get suitable nanoparticle size and good distribution of particle size for using them as a filler in MMMs. The TS-1 particles with different Si/Ti ratios (Si/Ti = 25 and 100) were functionalized using different amino silane coupling agents: 3-aminopropyltriethoxysilane (APTES), 3- aminopropyltrimethoxysilane (APTMS) and 3-aminopropylmethyldiethoxysilane (APMDES). Moreover, a new kind of silane coupling agents: 3- glycidoxypropyltriethoxysilane (GPTES), 3-glycidoxypropyltrimethoxysilane (GPTMS) and 3-glycidoxymethyldiethoxysilane (GPMDES) were also used. Tetrahydrofuran (THF), with a high dielectric constant (7.6), was used as solvent in order to control the surface modification and avoid pore blockage. The samples were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier Transform Infrared spectroscopy (FTIR), as well as carbon dioxide methane and nitrogen adsorption measurements. The obtained results showed that aging temperature at long aging times have the main effect on the morphology of the particles meanwhile crystallization temperature influences gas adsorption properties. T aging higher than T room showed a great influence on the particle size at t aging = 7 days; shorter t aging did not show an observable influence on the particle size. Crystallization temperature influences the adsorption properties; at lower crystallization temperature, higher quantity of CO 2 adsorbed and lower quantity of CH 4 adsorbed. At last, suitable TS-1 filler with good size distribution and particle size about 200nm was obtained using Si/Ti = 100 and Si/Ti = 25, T c = 140 °C, T aging = 40 °C and t aging = 7 days.
Trvalý link: http://hdl.handle.net/11104/0235744