发明授权
US4727166A Agglomerates of malachite and method for their preparation 失效
孔雀石聚集体及其制备方法

Agglomerates of malachite and method for their preparation
摘要:
Agglomerates of spheroidal masses of malachite crystals are prepared so that they contain silicic acid. These agglomerates can be used to prepare a copper-acetylide complex, which in turn can be used as a catalyst for the preparation of 1,4-butynediol from acetylene and formaldehyde.
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