| 초록 |
In this study, we prepared water-selective silica membrane onto a porous alumina support tube by sol-gel and chemical vapor deposition method and applied the membrane to methanol synthesis reaction. Water permeance of the silica/alumina composite membrane was increased with permeation temperature and reached to 1.35x10-3 std.cc/cm2.s.cmHg at 450℃. Water selectivities to hydrogen and carbon dioxide were about 5 and 12, respectively. The composite membrane reactor filled with Cu/Zn catalyst was applied for methanol synthesis from carbon dioxide and hydrogen. Comparing to conventional tubular reactor, water-selective membrane reactor increased the reaction conversion to 20% at 200℃, 0.3MPa. In conclusion, water removal from reaction zone with membrane reactor was efficient in conversion-up of methanol synthesis reaction. |
