| 摘要 |
This invention provides a DDR type zeolite membrane, characterized in that it is formed as a membrane on a substrate and its main component is silica, and that each single gas permeance at room temperature and 100° C. are different, respectively among at least two types of gases selected from a group consisting of carbon dioxide (CO<SUB>2</SUB>), hydrogen (H<SUB>2</SUB>), oxygen (O<SUB>2</SUB>), nitrogen (N<SUB>2</SUB>), methane (CH<SUB>4</SUB>), normal butane (n-C<SUB>4</SUB>H<SUB>10</SUB>), isobutane (i-C<SUB>4</SUB>H<SUB>10</SUB>), sulfur hexafluoride (SF<SUB>6</SUB>), ethane (C<SUB>2</SUB>H<SUB>6</SUB>), ethylene (C<SUB>2</SUB>H<SUB>4</SUB>), propane (C<SUB>3</SUB>H<SUB>8</SUB>), propylene (C<SUB>3</SUB>H<SUB>6</SUB>), carbon monoxide (CO), and nitrogen monoxide (NO).
|
