title: A novel co-precipitation method for preparation of Mn--Ce/TiO2 composites for NOx reduction with NH3 at low temperature.
abstract: Mn--Ce/TiO2 catalyst prepared by a novel co-precipitation method was used in this study for low-temperature selective catalytic reduction (SCR) of NOx with ammonia. The catalyst showed high activity and good SO2 resistance. The NO conversion on the catalyst increased to 100% when 700 ppm of SO2 flowed in, and reached 60.8% in 2.5 h. The characterized results indicated that the catalyst prepared by the new method had good dispersion of the active phase, uniform micro-size particles and large Brunauer-Emmett-Teller surface. The temperature programmed reduction and temperature programmed desorption experiments showed that the improvement in SCR activity on the Mn--Ce/TiO2 catalyst might be due to the increase of active oxygen species and the enhancement of NH3 chemisorption, both of which were conducive to NH3 activation.
authors: Guodian Science and Technology Research Institute, Nanjing 210031, P.R. China. shengwoody@zju.edu.cn
authors: Zhongyi
authors: Z
authors: Sheng
authors: Yufeng
authors: Y
authors: Hu
authors: Jianming
authors: J
authors: Xue
authors: Xiaoming
authors: X
authors: Wang
authors: Weiping
authors: W
authors: Liao
mesh_terms: D000641:Ammonia / Q000737:chemistry*; D002384:Catalysis; D002563:Cerium / Q000737:chemistry*; D011232:Chemical Precipitation; D008345:Manganese / Q000737:chemistry*; D009589:Nitrogen Oxides / Q000737:chemistry*; D056951:Photoelectron Spectroscopy; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D009589:Nitrogen Oxides; C009495:titanium dioxide; D002563:Cerium; D008345:Manganese; D000641:Ammonia; D014025:Titanium