Low Temperature Experimental Investigation of the Effect of High pH Koh Solutions on the Opalinus Shale, Switzerland
Low Temperature Experimental Investigation of the Effect of High pH Koh Solutions on the Opalinus Shale, Switzerland
复制标题
高 pH Koh 溶液对瑞士 Opalinus 页岩影响的低温实验研究
DOI：
10.1346/ccmn.1993.0410313
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发表时间：
1992
影响因子：
2.2
通讯作者：
J. Chermak
中科院分区：
文献类型：
--
作者：
J. Chermak
间歇式反应器实验分别在150°C、175°C和200°C下进行，以确定高pH KOH溶液对蛋白石页岩矿物学的影响。在这些实验中，25°C下溶液淬火pH值、溶液组成和矿物学的变化作为时间的函数被监测了长达约50天。在50毫升钛热液反应器容器中进行了运行。每个反应器加注0.5-5.0克80-200目大小的Opalinus页岩馏分和25 ml溶液（0.08和0.008 m KOH）。在这些高pH条件下，观察到的反应产物的一般顺序是形成phillipsite，其次是k -长石±k -累托石。菲利普石是一种亚稳中间体，最终转变为钾长石。这种矿物反应产物的顺序与在NaOH体系中发现的非常不同。
Batch reactor experiments were performed at 150°C, 175°C, and 200°C to determine the effect of high pH KOH solutions on the mineralogy of the Opalinus shale. In these experiments, the change in solution quench pH at 25°C, solution composition, and mineralogy were monitored as a function of time for up to ≈ 50 days. Runs were performed in 50 ml titanium hydrothermal reactor vessels. Each reactor was charged with 0.5–5.0 grams of the 80–200 mesh size fraction of Opalinus shale, and 25 ml of solution (0.08 and 0.008 m KOH). Under these high pH conditions, the general sequence of reaction products observed is the formation of phillipsite, followed by K-feldspar ± K-rectorite. Phillipsite is a metastable intermediate that eventually transforms to K-feldspar. This sequence of mineral reaction products is very different from that found in the NaOH system.