Details
| Original language | English |
|---|---|
| Pages (from-to) | 33-38 |
| Number of pages | 6 |
| Journal | Microporous and Mesoporous Materials |
| Volume | 207 |
| Early online date | 12 Jan 2015 |
| Publication status | Published - 1 May 2015 |
Abstract
Hydrophilic LTA and SOD membranes have been tested in the selective water removal from methanol (MeOH), dimethylcarbonate (DMC) and dimethylether (DME) thus simulating their synthesis in membrane reactors with CO2 as feed. To further improve the pervaporation selectivity of LTA membranes for an aqueous MeOH solution, Na+ ions located in the 8-membered oxygen ring of LTA were ion-exchanged with larger K+ ions in a KNO3 solution, leading to an improvement of the pervaporation separation factor of the H2O/MeOH mixture from 2.8 to 7.4 at room temperature. Furthermore, the selective removal of steam from the organic compounds MeOH, DME and DMC on supported SOD membranes was investigated at high temperatures by steam permeation. The separation performances of SOD membranes for equimolar mixtures of steam with H2, CO2, MeOH, DME or DMC, were evaluated in the temperature range from 125 to 200°C. The mixture separation factors for steam from DME and DMC through the SOD membrane were found to be higher than 200 and 1000, respectively.
Keywords
- Ion-exchange, LTA membrane, SOD membrane, Water removal
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
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In: Microporous and Mesoporous Materials, Vol. 207, 01.05.2015, p. 33-38.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Hydrophilic SOD and LTA membranes for membrane-supported methanol, dimethylether and dimethylcarbonate synthesis
AU - Wang, N.
AU - Liu, Y.
AU - Huang, A.
AU - Caro, J.
PY - 2015/5/1
Y1 - 2015/5/1
N2 - Hydrophilic LTA and SOD membranes have been tested in the selective water removal from methanol (MeOH), dimethylcarbonate (DMC) and dimethylether (DME) thus simulating their synthesis in membrane reactors with CO2 as feed. To further improve the pervaporation selectivity of LTA membranes for an aqueous MeOH solution, Na+ ions located in the 8-membered oxygen ring of LTA were ion-exchanged with larger K+ ions in a KNO3 solution, leading to an improvement of the pervaporation separation factor of the H2O/MeOH mixture from 2.8 to 7.4 at room temperature. Furthermore, the selective removal of steam from the organic compounds MeOH, DME and DMC on supported SOD membranes was investigated at high temperatures by steam permeation. The separation performances of SOD membranes for equimolar mixtures of steam with H2, CO2, MeOH, DME or DMC, were evaluated in the temperature range from 125 to 200°C. The mixture separation factors for steam from DME and DMC through the SOD membrane were found to be higher than 200 and 1000, respectively.
AB - Hydrophilic LTA and SOD membranes have been tested in the selective water removal from methanol (MeOH), dimethylcarbonate (DMC) and dimethylether (DME) thus simulating their synthesis in membrane reactors with CO2 as feed. To further improve the pervaporation selectivity of LTA membranes for an aqueous MeOH solution, Na+ ions located in the 8-membered oxygen ring of LTA were ion-exchanged with larger K+ ions in a KNO3 solution, leading to an improvement of the pervaporation separation factor of the H2O/MeOH mixture from 2.8 to 7.4 at room temperature. Furthermore, the selective removal of steam from the organic compounds MeOH, DME and DMC on supported SOD membranes was investigated at high temperatures by steam permeation. The separation performances of SOD membranes for equimolar mixtures of steam with H2, CO2, MeOH, DME or DMC, were evaluated in the temperature range from 125 to 200°C. The mixture separation factors for steam from DME and DMC through the SOD membrane were found to be higher than 200 and 1000, respectively.
KW - Ion-exchange
KW - LTA membrane
KW - SOD membrane
KW - Water removal
UR - http://www.scopus.com/inward/record.url?scp=84922356417&partnerID=8YFLogxK
U2 - 10.1016/j.micromeso.2014.12.028
DO - 10.1016/j.micromeso.2014.12.028
M3 - Article
AN - SCOPUS:84922356417
VL - 207
SP - 33
EP - 38
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
SN - 1387-1811
ER -