Novel Fe-Ce-Ti catalyst with remarkable performance for the selective catalytic reduction of NOx by NH3
Novel Fe-Ce-Ti catalyst with remarkable performance for the selective catalytic reduction of NOx by NH3
复制标题
具有卓越性能的新型 Fe-Ce-Ti 催化剂用于 NH3 选择性催化还原 NOx
DOI：
10.1039/c5cy02278a
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发表时间：
2016-01-01
影响因子：
5
通讯作者：
Ma, Lingling
中科院分区：
文献类型：
--
作者：
Liu, Zhiming;Liu, Yuxian;Ma, Lingling
采用水热法制备了一种环境友好型Fe-Ce-Ti复合氧化物催化剂，用于NH3选择性催化还原NOx（NH3-SCR）反应。结果表明，Fe-Ce-Ti催化剂具有良好的NH3-SCR活性、高的N2-选择性和较强的抗H2O和SO2能力，并具有较宽的操作温度窗口。XRD和拉曼光谱表明，Fe-Ce-Ti催化剂为非晶态结构。Fe和Ce的共同存在诱导形成氧化还原循环（Ce 4 + + Fe 2 + Ce 3 + + Fe 3+），其促进NO和NH3的活化。原位DRIFTS研究表明，Fe和Ce之间的协同作用有助于形成活性中间物种，从而导致Fe-Ce-Ti复合氧化物催化剂的高催化脱NO（x）性能。
An environmentally benign Fe-Ce-Ti mixed oxide catalyst, which was prepared via the hydrothermal method, has been investigated for the selective catalytic reduction of NOx with NH3 (NH3-SCR). It was found that the Fe-Ce-Ti catalyst exhibited excellent NH3-SCR activity, high N-2 selectivity and strong resistance against H2O and SO2 with a wide operation temperature window. XRD and Raman spectra suggest that the Fe-Ce-Ti catalyst has an amorphous structure. The co-presence of Fe and Ce induced the formation of a redox cycle (Ce4+ + Fe2+ Ce3+ + Fe3+), which promotes the activation of NO and NH3. In situ DRIFTS studies demonstrate that the synergetic effect between Fe and Ce contributes to the formation of reactive intermediate species, thus leading to the high catalytic deNO(x) performance of the Fe-Ce-Ti mixed oxide catalyst.