| abstract |
The preparation method and application of 18 loaded Cus of SAPO and Ce composite catalysts, for catalytic removal nitrogen oxides.18 molecular sieves of SAPO are prepared by hydro-thermal method, by itself and NH 4 Cl is exchanged, and prepares ammonia type NH 4 18 molecular sieves of SAPO, then by NH 4 18 molecular sieves of/SAPO add in copper nitrate and cerous nitrate solution, by multiple ion-exchange, prepare high-specific surface area (550m 2 / g~600m 2 / g) compound 18 molecular sieve catalysts of Ce CuSAPO.The made catalyst of the present invention is within the scope of wider temperature, to high-speed, high O 2 Concentration, high H 2 O content, NH 3 Content and low NO concentration pollutant have high catalytic removal effect (NO conversion ratios 30%~95%).And the catalyst kept NO initial conversions under wider temperature range in 100 hours.The catalyst is 850 DEG C in temperature, 10vl.%H 2 O/ air atmospheres under 300mL/min, after hydrothermal aging after 12h, keep the conversion ratio of higher NO. |