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

开发更有效的选择性氧化催化剂对现代生活来说是一个非常重要的问题。从common“mixed and baked”synthesis to“unit synthesis”。从common“mixed and baked”到“unit synthesis”。In our "unit synthesis"， we first prepare metal oxide unit and construct them to the desired mixed metal oxide materials。使用我们的新方法，我们已经尝试合成混合分子-钒氧化物，因为它们是最被推荐用于碱性选择性氧化的催化剂。在我们的研究项目中，我们成功地遵循了3个成就。1）我们找到了合成方法，可以准备好以纯形式混合的orthorhomb Mo-V-Sb和Mo-V-Sb-Nb混合金属氧化物。进一步，我们使用这些催化剂来实现氧化物的氧化物，并将其与其他Mo-V、Mo-V-Te和Mo-V-Te-Nb混合金属氧化物进行比较。我们可以成功地确定每种金属的作用.2）我们已经开发出一种用于orthorhombic Mo-V-Sb混合金属氧化物的贵族单元合成。We have found that ball-type polyoxomolybdate （NH_4）_<42>[M^<VI>_<72>Mo^V_<60>O_<372>（CH_3 COO）_<30>（H_2 O）_<72>]·ca.300 H_2 O·ca.10 CH_3 COONH was a suitable molybdenum source to obtain the well-crystallized Mo-V-Sb mixed metal oxide。所记录的样本是迄今为止最水晶化的，如此之远的报告。3）Mo-V样本可以包含高贵结构（触发性），并成功地实现了结构特征。新的结构包括5、6和7个成员单元，使金属氧化物八氢原子类似于orthorhomic结构。

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.