1. Reaction of methanol to olefin using a membrane contactor on a silica substrate
- Author
-
Mikihiro Nomura, Sota Maehara, Shusei Tanizume, Takamasa Onoki, Katsunori Ishii, Hiromasa Tawarayama, Ishikawa Shinji, and Takuya Okuno
- Subjects
Olefin fiber ,Materials science ,Substrate (chemistry) ,Filtration and Separation ,02 engineering and technology ,Permeation ,021001 nanoscience & nanotechnology ,Analytical Chemistry ,chemistry.chemical_compound ,Membrane ,020401 chemical engineering ,chemistry ,Chemical engineering ,Pentene ,Methanol ,0204 chemical engineering ,0210 nano-technology ,Selectivity ,Zeolite - Abstract
A MFI zeolite membrane was synthesized on a porous silica substrate. The defect-free MFI zeolite membrane was synthesized via a secondary growth method using seed crystals (Si/Al = 20) on a silica substrate in a parent gel of Si/Al = 100. The silica substrate prevented the dissolution of the seed crystals during the synthesis to promote the MFI zeolite membrane synthesis. The MFI zeolite membranes were employed for a contactor-type reactor for methanol-to-olefins (MTO) reactions to produce olefins, such as propylene. The methanol conversion was 99.9% with the selectivity of ethylene - pentene at 91.5% for the permeate side of the membrane contactor. The propylene selectivity was high at 48.5% with the C3H6/C3H8 ratio at 236.
- Published
- 2021
- Full Text
- View/download PDF