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| Hydrothermal Synthesis and Thermal Stability of Natural Mineral Lindgrenite | |
| 作者姓名： | BAO Ren-lie KONG Zu-ping GU Min YUE Bin WENG Lin-hong HE He-yong |
| 作者单位： | BAO Ren-lie~1，KONG Zu-ping~ 1，2，GU Min~1，YUE Bin~ 1**，WENG Lin-hong~1 and HE He-yong~1 1. Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials，Fudan University，Shanghai 200433，P. R. China; 2. School of Scientific Materials and Chemical Engineering，Ningbo University，Ningbo 315211，P. R. China |
| 基金项目： | 国家自然科学基金，国家重点基础研究发展计划(973计划)，The State Key Laboratory Base of Novel Functional Materials and Preparation Science(Ningbo University) |
| 摘 要： | IntroductionSynthesis of natural minerals is helpful for tracingthe geological origin of mineral formation and forverifying the quality of minerals. The investigations onthe conditions for mineral formation, such as pressure,temperature, and starting mate… |
| 关 键 词： | 热水合成 钼铜矿 结构精制 合成金属氧化物 热稳定性 |
| 文章编号： | 1005-9040（2006）-06-679-05 |
| 收稿时间： | 2006-02-22 |
Hydrothermal Synthesis and Thermal Stability of Natural Mineral Lindgrenite |
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| BAO Ren-lie KONG Zu-ping GU Min YUE Bin WENG Lin-hong HE He-yong.Hydrothermal Synthesis and Thermal Stability of Natural Mineral Lindgrenite[J].Chemical Research in Chinese University,2006,22(6):679-683. | |
| Authors: | Ren-lie BAO Zu-ping KONG Min GU Bin YUE Lin-hong WENG He-yong HE |
| Institution: | aDepartment of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and: Innovative Materials, Fudan University, Shanghai 200433, P. R. China bSchool of Scientific Materials and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China |
| Abstract: | A natural mineral, lindgrenite Cu3 (MoO4)2 (OH)2, was synthesized from a mixture of sodium molybdate, copper sulfate, and morpholine in water under autogenous pressure at 170 °C. The crystal structure of the mineral was determined and the final refinement for 791 observed reflections with I > 2σ (I) gave R1 = 0.0205 and wR2 = 0.0496. The thermal stability of the mineral was investigated by using TG-DTA and variable-temperature in situ X-ray diffraction (XRD) techniques. The crystalline Cu3Mo2O9 was obtained when the mineral underwent thermal dehydration at a temperature ranging from 300 to 400 °C, and the mixture of MoO3 and CuO was formed through decomposition of Cu3 Mo2 O9 at a temperature ranging from 650 to 700 °C. Therefore, the structure of the mineral was thermally unstable at above 300 °C, suggesting that Lindgrenite was likely formed via the hydrothermal route occurring in the nature. |
| Keywords: | Hydrothermal synthesis Lindgrenite Structural refinement Composite metal oxide Thermal stability |
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