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Copper Colloids and Nanoparticular Cu/ZrO2-based Catalysts for Methanol Synthesis

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Vukojević,  Sascha
Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Citation

Vukojević, S. (2009). Copper Colloids and Nanoparticular Cu/ZrO2-based Catalysts for Methanol Synthesis. PhD Thesis, Ruhr-Universität Bochum, Bochum.


Cite as: https://hdl.handle.net/11858/00-001M-0000-000F-8FAD-E
Abstract
In the present PhD work nanoparticular Cu/ZrO2-based solid catalysts were prepared using three different methods: exoemplating by activated carbon, microemulsion technique and impregnation of silica-monoliths, and characterized with XRD, N2-sorption, TPR, SEM, TEM und in-situ XAS. The materials were tested in a high-throughput test unit for the methanol synthesis activity.
Metalorganyl-stabilized copper colloids were prepared as model catalysts and were
characterized extensively (TEM/HRTEM, UV/vis, ATR-IR, in-situ EXAFS/ XANES). A
semi-automated test unit for methanol synthesis in liquid phase was built.
Copper colloids exhibited very high methanol synthesis activities in absence of Zn-species, whereas an altered reaction pathway involving methyl formate as an
intermediate was observed. Additionally copper colloids were supported on CMK-
supports and tested for their catalytic activity in gas phase.