Hydrothermal Synthesis of Complex Metal Oxides by Assembling MO6 Octahedra and Creation of Solid Acid
| Project/Area Number |
24760635
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Catalyst/Resource chemical process
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| Research Institution | Hokkaido University |
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Principal Investigator |
MURAYAMA Toru 北海道大学, 触媒化学研究センター, 助教 (60583531)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 複合酸化物 / 固体酸 / 触媒 / 結晶性 / 水熱合成 / タングステン / ニオブ / 固体酸触媒 / 脱水反応 / 水和反応 |
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| Outline of Final Research Achievements |
Layered-structure-type tungsten based complex oxides (W-M-O, M= Ti, Zr, Nb, Ta) were synthesized by the hydrothermal method. The synthesized W-M-O showed characteristic peaks at 2θ = 22.7° and 46.2° in an X-ray diffraction pattern (Cu-Ka), indicating linear corner-sharing of MO6 octahedra in the c-direction. The same layered-type materials were obtained with a wide range of W and M composition ratios by using soluble precursors. The catalytic activity of W-M-O increased with increase in the W ratio, suggesting that strong acid sites were generated. From Raman and adsorption measurements of W-M-O with various crystalline structures, it was revealed that the crystalline motif of W-M-O in the a-b plane was an interconnection of MO6 octahedra and {M6O21} pentagonal units and micropore channels but without long-range order.
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Report
(4 results)
Research Products
(50 results)
