Fluoride-free synthesis of CHA-type aluminophosphate crystals and membranes
| Project/Area Number |
17K14853
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Properties in chemical engineering process/Transfer operation/Unit operation
|
|---|
| Research Institution | Research Institute of Innovative Technology for the Earth |
|---|
Principal Investigator |
Seshimo Masahiro 公益財団法人地球環境産業技術研究機構, その他部局等, 主任研究員 (50708584)
|
|---|
| Project Period (FY) |
2017-04-01 – 2019-03-31
|
| Project Status |
Completed (Fiscal Year 2018)
|
| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
|
|---|
| Keywords | CHA / aluminophosphate / flourite-free synthesis / membrane / Alminophosphate / Fluoride-free synthesis / Cryatal / Membrane / Aluminophosphate / Crystal / Fluoride-free / Synthesis |
|---|
| Outline of Final Research Achievements |
We studied CHA type aluminophosphate synthesis as a novel zeolite membrane material and succeeded in fluoride-free synthesis of AlPO4-34. From the study of the synthesis gel composition, it was revealed that the range of formation of AlPO4-34 was extremely narrow, and the product distribution was dominated by the ratio of P2O5 to (TEA) 2O contained in the synthesis gel. In addition, in CHA and AEI where the amount of OSDA per cage is the same, it is suggested that conformational differences of OSDA may be involved in the formation of their respective structures.
In the film synthesis, it was revealed that the crystallinity of the seed crystal greatly affects the film formation. By using highly crystalline seed crystals, a membrane exhibiting relatively high permselectivity was obtained.
|
| Academic Significance and Societal Importance of the Research Achievements |
アルミノフォスフェート（AlPO4-n）は電荷を補償するためのカウンターカチオンを必要とせず、膜化することができれば高い透過性能を発揮することが期待できる。AlPO4-34は0.38 nmの3次元細孔を有しており、脱水用途で用いることができる。これを還流費が1に近い系や共沸をとる系に適用することができれば、蒸留法と比較して分離にかかるエネルギーおよび設備コストの大幅な削減が期待できる。
|
Report
(3 results)
Research Products
(16 results)
