| 过渡金属钼钒砷杂多化合物的合成与TPR,TPD研究 |
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| 引用本文： | 蔡铁军,邓谦,黄德发,彭振山,龙云飞,陈亚中. 过渡金属钼钒砷杂多化合物的合成与TPR,TPD研究[J]. 无机化学学报, 2002, 18(6): 602-606 |
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| 作者姓名： | 蔡铁军 邓谦 黄德发 彭振山 龙云飞 陈亚中 |
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| 作者单位： | 湘潭师范学院化学系,湘潭411201 |
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| 基金项目： | 湖南省自然科学基金资助项目(No.01JJY2014)，湖南省教育厅资助科研项目。 |
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| 摘 要： | ![]()
Seven transition metal molybdovanadoarsenic heteropoly compounds have been synthesized and characterized using IR, UV, TG-DTA, pH potential titration techniques. The molecular formulae of these compounds are pro-posed to be HxMyAsMO10V2O40·zH2O(x=1～3, y=1,2, M=Cr, Mn, Fe, Co, Ni, Cu, Zn).They are all keggin structure. Surface nature of these compounds have been investigated by temperature programmed desorption and temperature programmed reduction techniques. NH3-TPD results show that in TPD profiles of the compounds there are two desorption peaks corresponding to weak acid sites of desorption, respectively. Desorbing activativon energy and preexponential factor of weak acid site of desorption for compounds have been calculated. H2-TPR re-sults show that introducting transtion metal to molybdovanarsenic acid, the reduction peak temperatures of H2-TPR shift regularly with increasing d electron numbers of transition metals. In addition, Zn and Cu heteropoly com-pounds have yet apparent effect of hydrogen spill over.
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| 关 键 词： | 杂多化合物 过渡金属 TPR TPD 氢溢流 |
| 修稿时间： | 2002-01-04 |
Synthesis and TPR/TPD Investigation of Transition Metal Molybdovandoarsenic Heteropoly Compounds |
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| CAI Tie-Jun,DENG Qian,HUANG De-F,PENG Zhen-Shan,LONG Yun-Fei and CHEN Ya-Zhong. Synthesis and TPR/TPD Investigation of Transition Metal Molybdovandoarsenic Heteropoly Compounds[J]. Chinese Journal of Inorganic Chemistry, 2002, 18(6): 602-606 |
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| Authors: | CAI Tie-Jun DENG Qian HUANG De-F PENG Zhen-Shan LONG Yun-Fei CHEN Ya-Zhong |
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| Affiliation: | Department of Chemistry, Xiangtan Normal University, Xiangtan 411201,Department of Chemistry, Xiangtan Normal University, Xiangtan 411201,Department of Chemistry, Xiangtan Normal University, Xiangtan 411201,Department of Chemistry, Xiangtan Normal University, Xiangtan 411201,Department of Chemistry, Xiangtan Normal University, Xiangtan 411201 and Department of Chemistry, Xiangtan Normal University, Xiangtan 411201 |
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| Abstract: | ![]()
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| Keywords: | heteropolycompound transition metal TPR TPD hydrogen spill over |
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