Through Control of Wetting and Drying Conditions of Monolithic Supports Toward a Uniform Catalyst Distribution

Abstract

This article presents an optimized wetting and drying procedure for the preparation of monolithic catalysts. The catalyst precursor consumption was minimized by applying a tailored incipient wetness impregnation technique. The homogeneous distribution of the active phase within the monolithic catalysts was achieved by drying of the impregnated monoliths under a forced flow in a specially designed dryer. The dryer operated at ambient conditions with high recycle flow of drying gas. The direction of recycle flow was periodically alternated by a pneumatically driven valve assembly. The effect of the proposed impregnation method is demonstrated with an analysis of the Ni distribution in the impregnated Al₂O₃ monolith supports.

Keywords:

• Alternated recycle flow
• Monolith impregnation
• Monolith drying
• Nickel distribution

Notes

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