Platinum Catalyst on Multiwalled Carbon Nanotubes for the Catalytic Wet Air Oxidation of Phenol

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• 作者：G. Ovejero ; J. L. Sotelo ; A. Rodr&iacute ; guez ; C. D&iacute ; az ; R. Sanz ; J. Garc&iacute ; a
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2007
• 出版时间：September 26, 2007
• 年：2007
• 卷：46
• 期：20
• 页码：6449 - 6455
• 全文大小：324K
• 年卷期：v.46,no.20(September 26, 2007)
• ISSN：1520-5045

文摘

Bare oxidized carbon nanotubes (CNTs) and carboxylated CNTs treated with sodium carbonate to generatecarboxylate groups on the outer surface were used to prepare platinum catalysts by two different methods:incipient wetness and excess solution impregnation. The catalysts were characterized by N₂ adsorption (BET),X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy(TEM), thermogravimetric analysis (TGA), and X-ray fluorescence (XRF). These catalysts were tested incatalytic wet air oxidation of phenol aqueous solutions in a continuous trickle-bed reactor at 2.0 MPa of totalpressure and temperatures of 160 and 200 C. The phenol and TOC conversions obtained at steady state wereabove 94% and 80%, respectively, and the activity per catalyst weight was 30.0 mmol_phenol·g_cat^-1·h^-1 in steady-state conditions. This means the first use of CNT in catalytic wet air oxidation of phenol was in continuoustrickle-bed reactors (CTBR).