Synthesis and permeation properties of SAPO-34 tubular membranes

被引:154
作者
Poshusta, JC [1 ]
Tuan, VA [1 ]
Falconer, JL [1 ]
Noble, RD [1 ]
机构
[1] Univ Colorado, Dept Chem Engn, Boulder, CO 80309 USA
关键词
D O I
10.1021/ie980240b
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
A SAPO-34 membrane was prepared on an alumina tubular support. This membrane appears to exhibit molecular sieving properties with permeances that decrease as the kinetic diameter increases. The room-temperature permeances of H-2 and n-C4H10 were 2.4 x 10(-8) and 1.9 x 10(-10) mol/(m(2) s Pa), respectively, and the permeances were in the order H-2 > CO2 > N-2 > CH4 > n-C4H10. As the temperature increased, the single gas permeances of H-2 and N-2 exhibited minima, whereas the permeance of CO2 decreased and that of CH4 increased. As the pressure increased with a constant pressure drop across the membrane, the permeances of H-2, CO2, N-2, and CH4 decreased. The H-2/CH4, CO2/CH4, H-2/N-2, and CO2/N-2 ideal selectivities at 300 K and 270 kPa feed pressure with a 138 kPa pressure drop were 25, 19, 7.4, and 5.7, respectively, and these selectivities decreased with increasing temperature and increased with increasing pressure. The ideal selectivity of N-2/CH4 was 3.4 at the same conditions and decreased with increasing temperature and increasing pressure. The H-2/CO2 ideal selectivity was 1.3 at the same conditions and increased with increasing temperature and pressure. At 270 kPa feed pressure and 138 kPa pressure drop, the CO2/CH4 mixture selectivity was 30 at 300 K and 3.4 at 470 K.
引用
收藏
页码:3924 / 3929
页数:6
相关论文
共 35 条
  • [1] [Anonymous], STUD SURF SCI CATAL
  • [2] Gas permeation properties of A-type zeolite membrane formed on porous substrate by hydrothermal synthesis
    Aoki, K
    Kusakabe, K
    Morooka, S
    [J]. JOURNAL OF MEMBRANE SCIENCE, 1998, 141 (02) : 197 - 205
  • [3] PREPARATION AND SEPARATION PROPERTIES OF SILICALITE COMPOSITE MEMBRANES
    BAI, CS
    JIA, MD
    FALCONER, JL
    NOBLE, RD
    [J]. JOURNAL OF MEMBRANE SCIENCE, 1995, 105 (1-2) : 79 - 87
  • [4] Permeation characteristics of a metal-supported silicalite-1 zeolite membrane
    Bakker, WJW
    Kapteijn, F
    Poppe, J
    Moulijn, JA
    [J]. JOURNAL OF MEMBRANE SCIENCE, 1996, 117 (1-2) : 57 - 78
  • [5] Temperature dependence of one-component permeation through a silicalite-1 membrane
    Bakker, WJW
    vandenBroeke, LJP
    Kapteijn, F
    Moulijn, JA
    [J]. AICHE JOURNAL, 1997, 43 (09) : 2203 - 2214
  • [6] A highly oriented thin film of zeolite A
    Boudreau, LC
    Tsapatsis, M
    [J]. CHEMISTRY OF MATERIALS, 1997, 9 (08) : 1705 - &
  • [7] Characterization and permeation properties of ZSM-5 tubular membranes
    Coronas, J
    Falconer, JL
    Noble, RD
    [J]. AICHE JOURNAL, 1997, 43 (07) : 1797 - 1812
  • [8] Separation of hydrocarbon isomer vapors with silicalite zeolite membranes
    Funke, HH
    Kovalchick, MG
    Falconer, JL
    Noble, RD
    [J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1996, 35 (05) : 1575 - 1582
  • [9] SYNTHESIS AND CHARACTERIZATION OF ZEOLITE (MFI) MEMBRANES ON POROUS CERAMIC SUPPORTS
    GEUS, ER
    DENEXTER, MJ
    VANBEKKUM, H
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1992, 88 (20): : 3101 - 3109
  • [10] HIGH-TEMPERATURE STAINLESS-STEEL SUPPORTED ZEOLITE (MFI) MEMBRANES - PREPARATION, MODULE CONSTRUCTION, AND PERMEATION EXPERIMENTS
    GEUS, ER
    VANBEKKUM, H
    BAKKER, WJW
    MOULIJN, JA
    [J]. MICROPOROUS MATERIALS, 1993, 1 (02): : 131 - 147