| X射线衍射分析非晶二氧化硅结构及其物化性质的研究 |
| Structural Studies by X-ray Diffraction and Physico-Chemical Properties of Non-crystalline Silica |
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| 摘要: 研究用不同水玻璃浓度合成的4个非晶沉淀二氧化硅样品的物化性质、近红外、热重差热行为。并用X射线衍射手段分析了非晶二氧化硅的结构参数,结果表明样品的短程有序范围在5～6个原子距离。最近邻配位数与最近邻原子距离的变化与样品的吸油值相一致,一定程度上反映了样品结构的紧密程度。 |
| 关键词: 二氧化硅 非晶结构参数 XRD 热重-差热 近红外 |
| 基金项目: |
| Abstract: The physico-chemical parameters, near infra-red and TG-DTA behavior of the non-crystalline silica prepared by the varied initial water glass concentrations were systematically investigated. The structural parameters were obtained by X-ray diffraction technique and the results showed that the short range order was within 5～6 atoms. The variations of nearest coordination number and Si-O bond length, which in some degree reflected the structural compactness, were in accordance with the oil index. |
| Keywords: silica structural parameters of non-crystalline material XRD TG-DTA near IR |
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| 王国光,水淼,岳林海.X射线衍射分析非晶二氧化硅结构及其物化性质的研究[J].无机化学学报,2002,18(10):991-996. |
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