https://scholars.lib.ntu.edu.tw/handle/123456789/37197
標題: | N2O-CaO-Al2O3-SiO2系合成沸石之研究:(II)ALBITE-ANORTHITE-SiO2系合成沸石 | 作者: | 羅煥記 | 關鍵字: | 斜長石;方沸石;p-沸石;菱沸石;桿沸石;絲光沸石;交沸石;plagioclase;analcime;p-zeolite;chabazite;thomsonite;mordenite;harmotome | 公開日期: | 2001 | 出版社: | 臺北市:國立臺灣大學地質科學系暨研究所 | 摘要: | 本實驗以albite-anorthite-SiO2 系 的合成玻璃為材料,在鹼性溶液中(分 別用NaCl 與NaOH 之混合溶液和 Na2CO3 溶液),進行鈉鈣沸石的合成研 究。實驗在飽和蒸汽壓反應器中進 行,溫度在100°∼ 200℃間,溶液濃 度為0.1 ∼ 1 M, 時間為1 ∼ 60 天。 實驗結果顯示,含鈉高的斜長 石,在海洋與鹽湖環境下,易形成方 沸石,p-沸石及菱沸石,如含高鈉的斜 長石的岩石在蝕變過程中提供二氧化 矽時,有利於絲光沸石的形成,此與 野外觀察吻合。含鈣高的斜長石在海 洋環境下易形成桿沸石與garronite,在 鹽湖環境下則易形成p-沸石,水鈣沸 石及gobbinsite,此等沸石常見於玄武 岩中。含鈣高的斜長石的岩石,在蝕變過程中提供二氧化矽時,有利於形 成交沸石。 Synthetic glasses with the compositions of albite-anorthite-SiO2 system were used as starting materials to synthesize zeolites in alkaline solutions ( NaCl and NaOH mixied solution and Na2CO3 solution ). Experimental conditions were set as: vapor pressures, 100°∼ 200℃, solution concentrations of 0.1 ∼ 1M, and 1 ~ 60 days. Experimental results are as follows. Firstly, Na-rich plagioclases are easy to transform to analcime, p-zeolite and chabazite, but they are ready to transform to mordenite when sufficient amount of silica can be supplied from the plagioclase-bearing rocks during their alteration in marine or salt lake environment. This is agreed with field observations. Secondly, thomsonite and garronite, and p-zeolite, gismondine and gobbinsite are easy to be synthesized from Ca-rich plagioclases in marine and salt lake environments, respectively, harmotome is favored to form when sufficient amount of silica can be supplied from alteration of Ca-rich plagioclase-bearing rocks in marine and salt lake environments |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/11767 | 其他識別: | 892116M002043 | Rights: | 國立臺灣大學地質科學系暨研究所 |
顯示於: | 地質科學系 |
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892116M002043.pdf | 17.94 kB | Adobe PDF | 檢視/開啟 |
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