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Intrapore Synthesis of Silicalite Membranes at Temperatures below 100 °C

Kang, Beom Seok and Gavalas, George R. (2002) Intrapore Synthesis of Silicalite Membranes at Temperatures below 100 °C. Industrial & Engineering Chemistry Research, 41 (13). pp. 3145-3150. ISSN 0888-5885. doi:10.1021/ie010918e.

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Growth of silicalite membranes inside the pores of α-Al_2O_3 support tubes was carried out at 95 °C. The support tubes had a 1-μm mean pore diameter and were seeded by impregnation in a suspension of 0.1-μm silicalite particles prior to membrane growth. The membranes were weighed to determine the total reaction product and examined by SEM and EDS to estimate the spatial distribution. Reaction product was found at a depth of 100 μm or more inside the pores of the support. The membranes were tested in single gas permeations of hydrogen, nitrogen, n-butane, and isobutane and in the separation of n-butane/isobutane mixtures. After three growth periods, mixture measurements gave n-butane permeances of 10−17 MPU [1 MPU = 10^(-8) mol/(m^2 s Pa)] and n-butane/isobutane selectivities of 30−40 at room temperature. The selectivity results are discussed in terms of gaps between the intrapore crystals.

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Gavalas, George R.0000-0003-1468-6835
Additional Information:© 2002 American Chemical Society. Received for review November 13, 2001. Revised manuscript received March 28, 2002. Accepted April 2, 2002. This work was funded by the Department of Energy, National Energy Technology Laboratory, Grant DE-FG26-00NT40817.
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Department of Energy (DOE)DE-FG26-00NT40817
Issue or Number:13
Record Number:CaltechAUTHORS:20151006-150211096
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Official Citation:Intrapore Synthesis of Silicalite Membranes at Temperatures below 100 °C Beom Seok Kang and George R. Gavalas Industrial & Engineering Chemistry Research 2002 41 (13), 3145-3150 DOI: 10.1021/ie010918e
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60820
Deposited By: George Porter
Deposited On:07 Oct 2015 18:00
Last Modified:10 Nov 2021 22:40

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