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|Title:||Hierarchical meso-macroporous titania-supported CuO nanocatalysts: preparation, characterization and catalytic CO oxidation|
|Citation:||Journal of Materials Science, 2009; 44(24):6717-6726|
|Jian-Liang Cao, Gao-Song Shao, Tian-Yi Ma, Yan Wang, Tie-Zhen Ren, Shi-Hua Wu, Zhong-Yong Yuan|
|Abstract:||Hierarchically mesoporous-macroporous titanium dioxide (MMTD) was synthesized by the hydrolysis of tetrabutyl titanate in the absence of surfactant and autoclaving at 60 °C, which exhibits a porous hierarchy of wormhole-like mesostructure in the framework of macrochannels. Different contents of CuO nanoparticles were supported on the MMTD by a deposition-precipitation (DP) method, retaining the high surface areas and hierarchical porosity. The prepared MMTD support and the resulting CuO/MMTD nanocatalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), N2 adsorption analysis, temperature-programmed reduction (TPR), and X-ray photoelectron spectroscopy (XPS) techniques. Their catalytic behavior for low-temperature CO oxidation was studied by using a microreactor-GC system, and the CuO/MMTD catalyst with 8 wt% CuO content and calcined at 400 °C was found to have the highest catalytic activity. The catalytic activity depended on the CuO loading amount, the precalcination temperature, the meso-macroporous framework, the surface area, and the particle size of the CuO/MMTD catalysts.|
|Rights:||© Springer Science+Business Media, LLC 2009|
|Appears in Collections:||Chemical Engineering publications|
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