Construction of cluster lattice structured mixed metal oxides using unit synthesis and it's catalytic selective oxidation

单元合成构建簇晶结构混合金属氧化物及其催化选择性氧化

• 批准号: 16360396
• 负责人: UEDA Wataru
• 金额: $ 6.34万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16360396/
• 关键词: Mixed metal oxide; self-assembly; unit synthesis; polyoxometalate; hydrothermal reaction; molybdenum; vanadium; ポリオキソモリブデート; パナジウム

Development of more effective selective oxidation catalysts are very important issues for our modern life. In order to improve the catalytic performance, noble design of the catalysts in the atom and nano scale has been desired.Our research purpose was to develop noble synthetic method for metal oxide catalysts from common "mixed and baked" synthesis to "unit synthesis". In our "unit synthesis", we first prepare metal oxide unit and construct them to the desired mixed metal oxide materials. Using our new method, we tried to synthesize mixed molybdenum-vanadium oxides which are the most promising catalyst for alkane selective oxidation.In our research project term, we succeeded following 3 achievements.1)We have found synthetic mothod to prepare orthorhombic Mo-V-Sb and Mo-V-Sb-Nb mixed metal oxides in a pure form. Furthermore, we have perform propane ammoxidation using these catalyst and compared with other Mo-V,Mo-V-Te, and Mo-V-Te-Nb mixed metal oxides. We could successfully determine role of each metals.2)We have developed noble unit synthesis for orthorhombic Mo-V-Sb mixed metal oxide. We have found that ball-type polyoxomolybdate (NH_4)_<42>[M^<VI>_<72>Mo^V_<60>O_<372>(CH_3COO)_<30>(H_2O)_<72>]・ca.300H_2O・ca.10CH_3COONH was a suitable molybdenum source to obtain the well-crystallized Mo-V-Sb mixed metal oxide. The obtained sample was the most crystallized so far reported.3)Mo-V sample containing noble structure (trigonal) could be prepared and structural characterization was successfully achieved. The new structure contains 5,6, and 7 membered unit of metal oxide octahedron similar to orthorhombic structure.

开发更有效的选择性氧化催化剂是我们现代生活中非常重要的问题。为了提高催化剂的催化性能，人们希望在原子和纳米尺度上设计高贵的催化剂。我们的研究目的是开发高贵的金属氧化物催化剂的合成方法，从普通的“混合焙烧”合成到“单元合成”。在我们的“单元合成”中，我们首先制备金属氧化物单元，并将它们构建成所需的混合金属氧化物材料。利用我们的新方法，我们尝试合成了最有前途的烷烃选择氧化催化剂钼钒混合氧化物。在我们的研究项目期间，我们成功地完成了以下三个方面的工作：1)找到了合成方法，制备出了纯净的正交型Mo-V-Sb和Mo-V-Sb-Nb复合金属氧化物。并与其它Mo-V、Mo-V-Te、Mo-V-Te、Mo-V-Te-Nb混合金属氧化物进行了比较。我们成功地确定了每种金属的作用。2)我们开发了正交型Mo-V-Sb混合金属氧化物的贵金属单元合成。我们发现球状多钼酸盐(NH_4)_&lt；42&gt；[M^&lt；VI&gt；_&lt；72&gt；Mo^V_&lt；60&gt；O_&lt；372&gt；(CH_3COO)_&lt；30&gt；(H_2O)_&lt；72&gt；]・ca.300H_2O・ca.10CH_3COONH是获得结晶良好的Mo-V-Sb混合金属氧化物的合适的钼源。3)制备了具有高贵结构(三角)的Mo-V样品，并对其结构进行了表征。新结构含有金属氧化物八面体的5、6和7元单元，类似于正交晶系结构。

项目成果

Key aspects of crystalline Mo-V-O-based catalysts active in the selective oxidation of propane

• DOI: 10.1163/156856706777346435
• 发表时间: 2006-03
• 期刊: Research on Chemical Intermediates
• 影响因子: 3.3
• 作者: W. Ueda;Damian Vitry;Tomokazu Kato;N. Watanabe;Yusuke Endo

Comparative Study on the Catalytic Performance of Single-Phase Mo−V−O-Based Metal Oxide Catalysts in Propane Ammoxidation to Acrylonitrile

• DOI: 10.1021/ie0509286
• 发表时间: 2006
• 期刊: Industrial & Engineering Chemistry Research
• 影响因子: 4.2
• 作者: N. Watanabe;W. Ueda

Catalytic functions found in crystalline complex metal oxides active for selective oxidation of alkane

对烷烃选择性氧化具有活性的结晶复合金属氧化物中发现的催化功能

• 发表时间: 2004
• 期刊: Shokubai 46
• 作者: Wachs;I.E.;Damien Vitry;Tomokazu katou;Wataru Ueda;W.Ueda
• 通讯作者: W.Ueda

Strategy in achieving propane selective oxidation over multi-functional Mo-based oxide catalysts

• DOI: 10.1016/j.molcata.2004.01.026
• 发表时间: 2004-09
• 期刊: Journal of Molecular Catalysis A-chemical
• 作者: D. Vitry;J. Dubois;W. Ueda

巨大ポリオキソモリブデートの中空球状構造体への自己集合

巨型多钼酸盐自组装成空心球形结构

• 发表时间: 2005
• 期刊: 触媒 47
• 作者: S.Kojima;M.Loughran;H.Suzuki;N.Watanabe;W.Ueda;N.Watanabe;Nobufumi Watanabe;定金 正洋
• 通讯作者: 定金 正洋