Abstract
New gold catalytic system prepared on ceria-modified meso-/macroporous binary metal oxide support (CeO2/TiO2–ZrO2) and used as water–gas shift reaction (WGSR) catalyst is reported. The support was prepared through the surfactant templating technique combining with the use of mixed alkoxide solutions. Ceria-modifying additive and gold were deposited consecutively on the meso-/macroporous TiO2–ZrO2 by deposition-precipitation method. The samples were characterized by powder X-ray diffraction, scanning and transmission electron microscopy, N2 adsorption analysis, and temperature-programmed reduction. The catalytic activity of the new gold-based catalysts was evaluated in WGSR and it was compared with that of gold catalysts supported on simple and binary mesoporous oxides (TiO2, ZrO2, and TiO2–ZrO2) and ceria-modified mesoporous titania support (CeO2/mTiO2). A high degree of synergistic interaction between ceria and support and a positive modification of structural and catalytic properties have been achieved. The new gold catalytic system is found to be a promising catalyst for practical WGSR application.
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Acknowledgements
The Joint Research Project between the Commissariat general des relations internationals (CGRI), Belgium and Bulgarian Academy of Sciences (BAS), the Chinese-Bulgarian Scientific and Technological Cooperation Project (2K-11-01/2006), the Belgian Federal Government (Belspo PAI-IAP project, INANOMAT, P6/17), and the National Basic Research Program of China (No. 2009CB623502) supported this work.
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Idakiev, V., Tabakova, T., Tenchev, K. et al. Gold nanoparticles supported on ceria-modified mesoporous–macroporous binary metal oxides as highly active catalysts for low-temperature water–gas shift reaction. J Mater Sci 44, 6637–6643 (2009). https://doi.org/10.1007/s10853-009-3574-9
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DOI: https://doi.org/10.1007/s10853-009-3574-9