Nano Science and Technology Institute
Nanotech 2014 Vol. 3
Nanotech 2014 Vol. 3
Nanotechnology 2014: Electronics, Manufacturing, Environment, Energy & Water
Chapter 4: Nanomaterials for Catalysis

Application of alumina-based nanogold catalysts in gas mask and CO2 laser

Authors:C. Qi, H. Su, R. Guan, H. Lin, X. Sun, Y. Zheng, L. An
Affilation:Yantai Univeristy, CN
Pages:296 - 299
Keywords:gold catalysis, laser, gas mask
Abstract:We have found that Au nanoparticles on Al2O3 (a popular commercially available support material) show surprisingly high activities for CO oxidation when properly prepared [6-11]. Our proprietary catalyst, Au deposited on a ferrite-modified alumina prepared by a modified deposition-precipitation method, very comfortably satisfies the EN 403 standard for application in gas masks. 0.20 g of the catalyst can completely convert 1.0 vol. % CO in the temperature range of 248 to 258 K and is stable for 500 hours at room temperature in a feed of 1.0 vol. % CO in air with a space velocity of 15900 h-1. In addition, it is stable after 2 months direct exposure to air and stable for more than 7 years when stored in a desiccator. Currently, we are improving the activity and stability of alumina-based Au catalyst and successfully applying it as CO removal in CO2 laser.
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