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采用色谱-微反流动法反应装置考察了w%CuO/15%TiO2/γ-Al2O3催化剂对NO+CO的反应活性;催化剂经空气氛或氢气氛预处理后,NO转化率达100%的反应温度分别是325和275℃;XRD仅能检测到γ-Al2O3晶相,负载15%CuO后可以检测到微弱的CuO晶相;H2-TPR能检测到2个CuO的还原峰(α和β峰),将其归属于高度分散的CuO分别在裸露的γ-Al2O3和TiO2/γ-Al2O3载体上的还原;原位红外分析结果表明催化剂经空气氛或氢气氛预处理后,吸附NO+CO反应气后,反应的中间产物N2O出现的温度分别为200和150℃。
The reaction activity of w% CuO / 15% TiO2 / γ-Al2O3 for NO + CO was investigated by means of a chromatographic-micro-reverse flow reactor. The NO conversion was 100% after pretreated with air or hydrogen The temperature is 325 and 275 ℃ respectively; the γ-Al2O3 crystal phase can only be detected by XRD and the faint CuO crystal phase can be detected after loading 15% CuO; H2-TPR can detect the reduction peak of two CuO ). The results of in-situ IR analysis showed that the catalyst was pretreated by air or hydrogen atmosphere and the NO + CO reaction was adsorbed After the gas reaction, the temperature of the reaction intermediate product N2O appears to be 200 and 150 ° C, respectively.