Separator membrane having hierarchical structure comprising mesopores, production method therefor and xylene separation method using same
AssigneeKorea University Research and Business Foundation
InventorsJungkyu CHOI, Kwan Young LEE, Sung-Won HONG
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Abstract
The present invention relates to a separator membrane having a hierarchical structure, a production method therefor and a xylene separation method using same, and to: a separator membrane having a hierarchical structure comprising mesopores, the separator membrane having mesopores introduced inside a microporous zeolite separator membrane, thereby being thin, having less defects and exhibiting high xylene permeation and separation performance; a production method therefor; and a xylene separation method using same.
Claims7
A method of preparing a hierarchically structured zeolite membrane comprising:
- adding a secondary growth solution comprising a tetraalkylphosphonium salt, SiO2, and H2O at a molar ratio of 5-50:5-500:1,000-50,000 onto a support on which an MFI seed layer is formed;
- and
- performing hydrothermal synthesis.
Dependencies are inferred from the claim text.