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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received July 2, 2001
Accepted July 28, 2001

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Optimum Washing Conditions for the Preparation of Cu/ZnO/ZrO2 for Methanol Synthesis from CO Hydrogenation: Effects of Residual Sodium

Young-Woong Suh Hyun-Ku Rhee^†

School of Chemical Engineering and Institute of Chemical Processes, Seoul National University, Kwanak-ku, Seoul 151-742, Korea

hkrhee@snu.ac.kr

Korean Journal of Chemical Engineering, January 2002, 19(1), 17-19(3), 10.1007/BF02706869

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Abstract

The residual sodium in the Cu/ZnO/ZrO2 catalyst is found to inhibit the interaction between CuO and ZnO and lead to a decrease in the catalytic activity for CO hydrogenation. Therefore, it is required to reduce the content of sodium as much as possible during the course of catalyst preparation. To obtain 10% yield of methanol, the sodium content must be reduced to a level lower than 0.15%. For this purpose, the washing condition has been investigated experimentally to optimize the preparation conditions of Cu/ZnO/ZrO2 catalyst. As a result, the sodium content could be reduced to 0.115% by washing the cake four times with 50 mL of distilled water per gram of the cake, which constitutes the optimum condition for washing.

Keywords

Cu/ZnO/ZrO2 Methanol Synthesis Washing Condition Sodium Content CO Hydrogenation

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