介绍国内外制备钨酸铵溶液、 仲钨酸铵晶体及高纯仲钨酸铵的制备方法。
The preparing processes of ammonium tungstate solution, ammonium paratungstate crystal and high pure ammonium paratungstate crystal are reviewed.
提出了以高氯酸为催化剂，分析纯乙酸乙酯为介质，乙酰化法测定伯、仲醇的实验条件，实现了对经典方法的改进，简化了操作程。
The experimental condition of acetylating method for determining priminary alcohol and secondary alcohol catalyzed by perchloric acid in the medium of analytically pure ethylacetate is proposed.
采用合成氨厂的氨合成气代替纯氢气使脂肪腈加压催化氢化 ，可一步制得双脂肪烃基仲胺。
A new process has been developed to synthesize p-aminophenol methyl ether from p-nitrophenol methyl ether by catalytic hydrogenation, using ammonia synthesis gas instead of pure hydrogen.
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