DRIFT Study on Cr2O3-SO42-/TiO2 Catalyst for Low Temperature Selective Catalytic Reduction of NO with NH3

作者：Zhang Yiming; Zhang He^*; Zhou Liang; Han Wei

来源：Chemical Research in Chinese Universities, 2014, 30(2): 279-283.

DOI：10.1007/s40242-014-3446-y

• Nitric oxide
• Selective catalytic reduction
• Sulfate

Chromium oxides supported on TiO2 showed good activity for the selective catalytic reduction of NO by NH3. The catalytic activity of Cr2O3-SO42-/TiO2 catalyst was greatly enhanced by the addition of SO42- into TiO2 support. The catalyst surface properties were characterized with NH3- TPD(temperature programmed desorption) and H-2-TPR( temperature programmed reduction). The sulphate on the catalyst surface could enhance the acidity and redox of the catalyst obviously. The reaction mechanism on this catalyst was researched in detail by in situ diffuse reflectance Fourier transform infrared(FTIR) spectroscope. Eley-Rideal and Langmuir-Hinshelwood mechanism existed simultaneously for selective catalytic reduction(SCR) reaction of NO over Cr2O3-SO42-/TiO2 catalyst.

• 出版日期2014-4
• 单位长春理工大学; 吉林大学