Abstract
Functional-membrane coated Mn-La-Ce-Ni-Ox catalysts for NH3-SCR at low-temperature were designed and prepared. The catalytic activity for NO removal and the anti-poison ability of catalyst were also investigated and discussed. Result showed that functional-membrane coated Mn-La-Ce-Ni-Ox catalysts had the highest NO removal efficiency of 93% at 180°C and after injecting 10vol% H2O and 300ppm of SO2, the NO removal efficiency still reached about 80%. The functional membrane could not only prevent H2O absorbing on the surface of catalyst and produce sulfur ammonium salt, but also effectively isolate the poison contacting catalyst active sites.
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