For hydrothermal synthesis, the molar ratio of water/sodium oxide was between 80 and 120.
原位水热合成中水与氧化钠的摩尔比在80到120之间。
参考来源 - 4A型分子筛膜的合成及其在醇/水分离体系中的应用·2,447,543篇论文数据，部分数据来源于NoteExpress
By flame atom absorption spectrometry, the contents of passium oxide, Sodium oxide in potassium feldspar are determined.
用火焰原子吸收分光光度法测定钾长石中的氧化钾、氧化钠。
For the route of selective separation and enrichment with sodium oxide, it is very difficult for one-step route to produce quite pure enriched slag.
对于钠系选择性分离富集路线，采用一步调渣法路线难以取得较高纯度的富钛渣。
The results showed that only small amount of alkalis in feldspar were extracted when autoclaved with water, and the majority of extract is sodium oxide.
结果表明：长石在水中碱溶出量比较少，溶出的碱主要是钠碱。
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