发明名称 |
ACID RESISTANT PBI MEMBRANE FOR PERVAPORATION DEHYDRATION OF ACIDIC SOLVENTS |
摘要 |
A pervaporation membrane may be an acid-resistant polybenzidimazole (PBI) membrane. The acid-resistant PBI membrane may be a PBI membrane chemically modified by a process selected from the group consisting of sulfonation, phosphonation, cross-linking, N-substitution, and/or combinations thereof. The membrane may be thermally stabilized. A method for the dehydration of an acid material may include the steps of: contacting an acidic aqueous solution with a membrane of an acid-resistant polybenzidimazole; taking away a permeate stream rich in water; and taking away a concentrate steam rich in the acid material. The acidic aqueous solution may be acetic acid. |
申请公布号 |
EP2855000(A4) |
申请公布日期 |
2016.03.09 |
申请号 |
EP20130794187 |
申请日期 |
2013.04.24 |
申请人 |
PBI PERFORMANCE PRODUCTS, INC. |
发明人 |
WANG, YAN;GRUENDER, MICHAEL;CHUNG, TAI-SHUNG |
分类号 |
B01D71/62;B01D61/36;B01D69/00 |
主分类号 |
B01D71/62 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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