Abstract
Propylene/propane and ethylene/ethane separation was examined with Ag-exchanged X-type zeolite membrane (Ag-X membrane). The Na-X membrane was prepared on a porous tubular α-alumina support by a secondary growth method. The resulting Na-X membrane was ion-exchanged by using AgNO3 aq. Olefin selectivities in both mixtures were markedly improved after the ion exchange from Na to Ag cation. The Ag-X membrane exhibited a maximum propylene selectivity of 55.4 with a permeance of 4.13 × 10-8 mol m-2 s-1 Pa-1 at 353 K for a propylene/propane (50:50) mixture. This membrane also exhibited a maximum ethylene selectivity of 15.9 with a permeance of 9.04 × 10-8 mol m-2 s-1 Pa-1 at 303 K for an ethylene/ethane (50:50) mixture. We consider that the strong interaction between olefin and Ag cation plays an important role for the appearance of such high selectivity of olefin.
| Original language | English |
|---|---|
| Pages (from-to) | 4145-4151 |
| Number of pages | 7 |
| Journal | ACS Applied Materials and Interfaces |
| Volume | 11 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2019 Jan 30 |
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Keywords
- ethylene
- FAU
- gas separation
- membrane
- propylene
- zeolite
ASJC Scopus subject areas
- Materials Science(all)
Cite this
Olefin Selective Ag-Exchanged X-Type Zeolite Membrane for Propylene/Propane and Ethylene/Ethane Separation. / Sakai, Motomu; Sasaki, Yasuhito; Tomono, Taisuke; Seshimo, Masahiro; Matsukata, Masahiko.
In: ACS Applied Materials and Interfaces, Vol. 11, No. 4, 30.01.2019, p. 4145-4151.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Olefin Selective Ag-Exchanged X-Type Zeolite Membrane for Propylene/Propane and Ethylene/Ethane Separation
AU - Sakai, Motomu
AU - Sasaki, Yasuhito
AU - Tomono, Taisuke
AU - Seshimo, Masahiro
AU - Matsukata, Masahiko
PY - 2019/1/30
Y1 - 2019/1/30
N2 - Propylene/propane and ethylene/ethane separation was examined with Ag-exchanged X-type zeolite membrane (Ag-X membrane). The Na-X membrane was prepared on a porous tubular α-alumina support by a secondary growth method. The resulting Na-X membrane was ion-exchanged by using AgNO3 aq. Olefin selectivities in both mixtures were markedly improved after the ion exchange from Na to Ag cation. The Ag-X membrane exhibited a maximum propylene selectivity of 55.4 with a permeance of 4.13 × 10-8 mol m-2 s-1 Pa-1 at 353 K for a propylene/propane (50:50) mixture. This membrane also exhibited a maximum ethylene selectivity of 15.9 with a permeance of 9.04 × 10-8 mol m-2 s-1 Pa-1 at 303 K for an ethylene/ethane (50:50) mixture. We consider that the strong interaction between olefin and Ag cation plays an important role for the appearance of such high selectivity of olefin.
AB - Propylene/propane and ethylene/ethane separation was examined with Ag-exchanged X-type zeolite membrane (Ag-X membrane). The Na-X membrane was prepared on a porous tubular α-alumina support by a secondary growth method. The resulting Na-X membrane was ion-exchanged by using AgNO3 aq. Olefin selectivities in both mixtures were markedly improved after the ion exchange from Na to Ag cation. The Ag-X membrane exhibited a maximum propylene selectivity of 55.4 with a permeance of 4.13 × 10-8 mol m-2 s-1 Pa-1 at 353 K for a propylene/propane (50:50) mixture. This membrane also exhibited a maximum ethylene selectivity of 15.9 with a permeance of 9.04 × 10-8 mol m-2 s-1 Pa-1 at 303 K for an ethylene/ethane (50:50) mixture. We consider that the strong interaction between olefin and Ag cation plays an important role for the appearance of such high selectivity of olefin.
KW - ethylene
KW - FAU
KW - gas separation
KW - membrane
KW - propylene
KW - zeolite
UR - http://www.scopus.com/inward/record.url?scp=85060944039&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85060944039&partnerID=8YFLogxK
U2 - 10.1021/acsami.8b20151
DO - 10.1021/acsami.8b20151
M3 - Article
VL - 11
SP - 4145
EP - 4151
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
SN - 1944-8244
IS - 4
ER -