| 摘要 |
The present invention pertains to a micro-crystalline beohmite containing additive in a homogeneously dispersed state. Suitable additives are compound s containing elements selected from the group of alkaline earth metals, alkali ne metals, rare earth metals, transition metals, actinides, silicon, gallium, boron, titanium, and phosphorus. Said MCBs according to the invention may be prepared in several ways. In general, a micro-crystalline boehmite precursor and an additive are converted to a micro-crystalline boehmite containing the additive in a homogeneously dispersed state. Also claimed are shaped particl es and catalyst compositions comprising the as-prepared micro-crystalline boehmite.
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