| Autor: |
Müller, K., Städter, M., Rachow, F., Hoffmannbeck, D., Schmeißer, D. |
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| Zdroj: |
Environmental Earth Sciences; Dec2013, Vol. 70 Issue 8, p3771-3778, 8p |
| Abstrakt: |
The catalytic conversion of CO 2 is an important component for the reintegration of secondary products like CO 2 or H 2 into the energy supply. An example is the “power to gas” concept with a conversion of CO 2 into CH 4. The CO 2 is transferred into a carrier of chemical energy, with the possibility to feed the produced CH 4 into the existing network of natural gas. At temperatures of around 350 °C, hydrogenation of CO 2 to CH 4 is possible by the Sabatier reaction CO 2 + 4H 2 → CH 4 + 2H 2O. One prerequisite for efficient kinetics of the Sabatier reaction is the application and optimization of catalysts. The focus of catalyst development is given to their performance under the conditions to be expected in the special application. As a part of the project Geoenergy-Research (GeoEn), we address questions related to the catalytic utilization of CO 2 produced in the course of the oxyfuel combustion of lignite. In this contribution, we report on the experimental setup in laboratory scale, which enables an advanced characterization of the catalytic performance, including thermodesorption measurements at atmospheric pressure in order to determine the amount of adsorbed CO 2 under real conditions. We also show data for activation energies, the catalytic performance as function of temperature and the long time stability of a commercial Ru-based catalyst. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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