| 煅烧斜发沸石的 X 光粉晶衍射、红外吸收光谱和化学活性组分研究 |
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| 引用本文： | 张振禹,郭竞雄,梁春林,刘加林.煅烧斜发沸石的 X 光粉晶衍射、红外吸收光谱和化学活性组分研究[J].地质科学,1986,0(3):261-267. |
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| 作者姓名： | 张振禹 郭竞雄 梁春林 刘加林 |
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| 作者单位： | 中国科学院地质研究所 |
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| 摘 要： | 斜发沸石是片沸石矿物中的一种,它的化学组成和晶体结构均与片沸石相似(Alberite,1975)。单就化学成分而言,两者之间并无严格的界限。片沸石为富含二价阳离子的低硅沸石,斜发沸石为富含一价阳离子的高硅沸石。一般认为,硅铝比低于4的为片沸石,硅铝比高于4的为斜发沸石(Aliett,1972;Boles,1972)。
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| 关 键 词： | , |
| 收稿时间： | 1984-09-01 |
| 修稿时间： | 1984-09-01; |
INVESTIGATION ON THE STRUCTURES OF CALCINED CLINOPTILOLITES USING X-RAY DIFFRACTOMETER,INFRARED SPECTROSCOPY AND CHEMICAL ANALYSIS |
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| Zhang Zhenyu,Guo Jingxiong,Liang Chunlin,Liu Jialin.INVESTIGATION ON THE STRUCTURES OF CALCINED CLINOPTILOLITES USING X-RAY DIFFRACTOMETER,INFRARED SPECTROSCOPY AND CHEMICAL ANALYSIS[J].Chinese Journal of Geology,1986,0(3):261-267. |
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| Authors: | Zhang Zhenyu Guo Jingxiong Liang Chunlin Liu Jialin |
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| Institution: | Institute of Geology, Academia Sinica, Beijing |
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| Abstract: | By X-ray powder diffraction, IR spectra and chemical analysis for active SiO2 and Al2O3 of the clinoptilolites heated at various temperatures, it is shown that its structures undergo changes in three stages which occur at low-, medium- and high-temperatures, respectively. In the first stage the structure of clinoptilolites baked in a range of temperature 100-500℃ transform into dehydrated structure in which zeolitic water has been lost, zeolite framework formed by tetrahedra Si (Al)O4 with long range order is maintained and basic physical and chemical properties characteristic of the clinoptilolites are still shown.In the second stage the structure of clinoptilolites calcined over the range of temperatures 600-900℃ changes to dealuminized one in which zeolite framework of tetrahedra Si(Al)O4 is destroied and the arrangement of the units with long range disorder is formed, but fundamental structural blocks of the tetrahedra Si(Al)O4 are persevered and partial physico-chemical, characteristics for the clinoptilolites are displayed.In the third stage the structure of clinoptilolites heated within the limit of temperature from 900 to 1200℃ collpses to amorphous state in which the distribution of tetrahedra Si(Al)O4 is disordered completely and the specific nature of clinoptilolite is observed not fully.According to above-mentioned changes of the structures of clinoptilolites heated at increasing temperature, a conclusion can be drawn that in the course of transition from crystalline state to noncrystalline state of clinoptilolites during the calcination there is a intermediate metastable state-the so-called meta-zeolitic structural state. |
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| Keywords: | , |
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