In-situ activation of CuO/ZnO/Al.sub.2 O.sub.3 catalysts in the

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide

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423656, 502 30, 518700, 518709, 518713, B01J 2104, B01J 2306, B01J 2372, C07C 2916

Patent

active

048015741

ABSTRACT:
The present invention relates to a method of activation of a CuO/ZnO/Al.sub.2 O.sub.3 catalyst slurried in a chemically inert liquid. Successful activation of the catalyst requires the use of a process in which the temperature of the system at any time is not allowed to exceed a certain critical value, which is a function of the specific hydrogen uptake of the catalyst at that same time. This process is especially critical for activating highly concentrated catalyst slurries, typically 25 to 50 wt %. Activation of slurries of CuO/ZnO/Al.sub.2 O.sub.3 catalyst is useful in carrying out the liquid phase methanol or the liquid phase shift reactions.

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Sawant et al. "In-Situ Reduction of a Methanol Synthesis Catalyst in a Three-Phase Slurry Reactor", Fuel Science & Technology Int'l.

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