| 两个新的Dowson结构硫钼多酸盐合成，表征以及催化性质(英文) | |||||||||||
| Syntheses, Characterization and Catalytic Properties of Two New Wells-Dawson Molybdosulfates | |||||||||||
|
|||||||||||
| 摘要: 通过水热技术合成了两种新的Dowson结构硫钼多酸盐[C5N2H14]2[S2MoⅥ18O62]·8H2O (1)和[C5N2H14]8(H3O)2[S2MoⅤ2MoⅥ16O62]3·(C5H5N)2(2)，并通过X射线分析、红外光谱和元素分析其进行了表征。X射线晶体结果分析，化合物1结晶于正交晶系，Pmmn空间群，a=1.799 29(17) nm，b=1.358 04(13) nm，c=1.419 26(13) nm，V=3.468 0(6) nm3，Z=2。化合物2结晶于单斜晶系，C2/m空间群，a=2.266 5(3) nm，b=1.374 9(2) nm，c=3.291 2(5) nm，β=104.31(0)°，V=9.938(2) nm3，Z=4。化合物1和2都含有Dawson结构的硫钼多酸阴离子和质子化的N-甲基哌嗪阳离子。并且由苯乙烯的氧化催化结果中看出混价钼的化合物2的催化活性要比化合物1略高。 | |||||||||||
| 关键词: 硫钼酸盐 晶体结构 水热合成 催化 | |||||||||||
| 基金项目: | |||||||||||
| Abstract: Two new wells-Dawson compounds [C5N2H14]2[S2MoⅥ18O62]·8H2O (1) and [C5N2H14]8(H3O)2[S2MoⅤ2MoⅥ16O62]3·(C5H5N)2(2) have been synthesized and characterized by single crystal X-ray analysis, IR spectra and elemental analysis. Single crystal X-ray diffraction confirms that compound 1 crystallizes in orthorhombic, a=1.799 29(17) nm, b=1.358 04(13) nm, c=1.419 26(13) nm, V=3.468 0(6) nm3, Z=2. Compound 2, monoclinic, a=2.266 5(3) nm, b=1.374 9(2) nm, c=3.291 2(5) nm, β=104.31(0)°, V=9.938(2) nm3, Z=4. Both compound 1 and 2 are built up of the Dawson-type molybdosulfate anions, full protonated N-methylpiperazine cations. The catalytic result in the oxidation of styrene indicates that the mixed MoⅤ/MoⅥ compound 2 has higher catalytic activity than 1. CCDC: 783378, 1; 783379, 2. | |||||||||||
| Keywords: molybdosulfate crystal structure hydrothermal synthesis catalysis | |||||||||||
| 摘要点击次数: 3382 | |||||||||||
| 全文下载次数: 2187 | |||||||||||
| 孙月霞,张志斌,孙 琪,许 岩.两个新的Dowson结构硫钼多酸盐合成，表征以及催化性质(英文)[J].无机化学学报,2011,27(3):556-560. | |||||||||||
| 查看全文 查看/发表评论 下载PDF阅读器 | |||||||||||
| Support information: | |||||||||||
|
| |||||||||||
|
| |||||||||||
|
| |||||||||||