| CuO/ZnO甲醇合成催化剂的正电子湮没谱学研究 |
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| 引用本文： | 刘其盛,戴国欢,孙继英,丁莹如,姚建华.CuO/ZnO甲醇合成催化剂的正电子湮没谱学研究[J].核技术,1989(12). |
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| 作者姓名： | 刘其盛 戴国欢 孙继英 丁莹如 姚建华 |
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| 作者单位： | 南京大学
(刘其盛，孙继英，丁莹如)，南京化工学院
(戴国欢)，南京大学(姚建华) |
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| 摘 要： | 发展了用正电子湮没寿命参数测定用共沉淀方法制备的金属氧化物系固溶度的新方法。测量了一系列用共沉淀方法制备的不同CuO at％含量的CuO/ZnO甲醇合成催化剂粉末(压制成片)还原前后的正电子寿命谱。分析该种催化剂的固溶特性及其与正电子寿命参数的关系,得出还原后样品的固溶度为12CuOat％.支持了CuO/ZnO甲醇合成催化剂以Cu~+离子为活性中心的观点。
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| 关 键 词： | 共沉淀 甲醇合成催化剂 固溶度 活性中心 正电子湮没 |
Study on positron annihilation spectroscopy of methanol synthesiscatalyst CuO/ZnO |
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| Liu Qisheng Dai Guohuan Sun Jiying Ding Yingru Yao Jianhua.Study on positron annihilation spectroscopy of methanol synthesiscatalyst CuO/ZnO[J].Nuclear Techniques,1989(12). |
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| Authors: | Liu Qisheng Dai Guohuan Sun Jiying Ding Yingru Yao Jianhua |
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| Affiliation: | Nanjing University |
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| Abstract: | A new method was developed determining the solid solubility of a metal oxide series prepared by precipitation using the positron lifetime parameters. The positron lifetime spectra were measured of a seris of CuO/ZnO catalysts prepared by precipitation in which the CuO at% contents were different before and after reduced. The relations were obtained between the solid solubility of the catalysts and the positron lifetime parameters, from which a result of solid solubility of 12.CuO at% after reduced had been found. The viewpoint that the Cu+ ion acted as the active centre in the CuO /ZnO catalyst was supported. |
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| Keywords: | Precipitation Methanol synthesis catalyst Solid solubility Active centre Positron annihilation |
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