caa a22 4500 463220994 CHVBK 20180405153212.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1007/s10853-006-1020-9 doi (NATIONALLICENCE)springer-10.1007/s10853-006-1020-9 Synthesis and characterization of silicalite powders and membranes with micro-meso bimodal pores [Elektronische Daten] [C. Cooper, Y. Lin] Silicalite sols containing silicalite agglomerates of 150-380nm in size were synthesized by hydrothermal synthesis for 0.5-3days. Silicalite powders and supported silicalite membranes containing micro-meso bimodal pores were prepared by the sol-gel method using these silicalite sols. The silicalite powders contain intracrystalline zeolitic pores (0.54nm) and intercrystalline mesopores of about 3-4nm in diameter. For the silicalite powders the mesopore size decreases and mesopore surface area increases with increasing silicalite agglomerate size as a result of a change of the shape of silicalite agglomerates from round to more faceted one. Continuous silicalite thin films of thicknesses ranging from 3μm to 12μm were made on α-alumina by the sol-gel dip-coating method. The supported silicalite membranes also contain both zeolitic pores and mesoporous intercrystalline pores. The single gas He permeance of the 3μm thick α-alumina supported silicalite membrane was found to be from 2.7×10−6 to 3.3×10−6mol/m2sPa. These bimodal pore zeolite powders offer the potential as catalysts and sorbents with improved efficiency. The bimodal pore zeolite membrane can be used as support for zeolite and other membranes and as compact packed-bed reactor for chemical reaction. Springer Science+Business Media, LLC, 2006 Cooper C. Department of Chemical and Materials Engineering, University of Cincinnati, 45221-012, Cincinnati, OH, USA aut Lin Y. Department of Chemical and Materials Engineering, University of Cincinnati, 45221-012, Cincinnati, OH, USA aut Journal of Materials Science Springer US; http://www.springer-ny.com 42/1(2007-01-01), 320-327 0022-2461 42:1<320 2007 42 10853 https://doi.org/10.1007/s10853-006-1020-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1020-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cooper C. Department of Chemical and Materials Engineering, University of Cincinnati, 45221-012, Cincinnati, OH, USA aut NATIONALLICENCE 700 1- Lin Y. Department of Chemical and Materials Engineering, University of Cincinnati, 45221-012, Cincinnati, OH, USA aut NATIONALLICENCE 773 0- Journal of Materials Science Springer US; http://www.springer-ny.com 42/1(2007-01-01), 320-327 0022-2461 42:1<320 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer