发现钙、镁、镧离子交换的丝光沸石，在表现出较高活性的同时，还对二甲胺具有55%左右的高选择性。
It has been found that the Ca, Mg, la ion exchanged mordenites have both high activity and high selectivity toward dimethylamine with the yield of around 55%.
报道一种在甲醇镁作用下，由二氧化碳及甲醇直接合成碳酸二甲酯的反应过程。
Dimethyl carbonate is synthesized directly from carbon dioxide and methanol in the presence of magnesium methoxide.
本发明也公开该铝镁二甲硅油咀嚼片的制 备方法。
The invention also discloses a method for preparing the aluminum-magnesium dimeticone chewable tablet.
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