Selective catalytic reduction of NOx to nitrogen over Co-Pt/ZSM-5: Part A. Characterization and kinetic studies
Selective catalytic reduction of NOx to nitrogen over Co-Pt/ZSM-5: Part A. Characterization and kinetic studies
复制标题
DOI：
10.1016/s0926-3373(00)00194-6
复制
发表时间：
2001
影响因子：
22.1
通讯作者：
S. Maisuls;K. Seshan;S. Feast;J. Lercher
中科院分区：
文献类型：
--
作者：
S. Maisuls;K. Seshan;S. Feast;J. Lercher
研究了在过量氧存在下，Co-Pt/ZSM-5催化剂上丙烯选择性催化还原NO的反应。纯Pt基催化剂活性高，但产生大量N2 O。具有低Pt含量（0.1wt.%）的双金属Co-Pt/ZSM-5催化剂通过将Pt催化剂的高稳定性和活性与Co催化剂的高N2选择性相结合，显示出协同效应。N2 O的选择性较低是由于其选择性转化率高于Co。催化剂在350°C以上还显示出高的水和硫耐受性。
The selective catalytic reduction of NO by propene in the presence of excess oxygen has been studied over catalysts based on Co-Pt supported on ZSM-5. Pure Pt based catalysts are highly active, but produce large amounts of N2O. Bimetallic Co-Pt/ZSM-5 catalysts with low Pt contents (0.1wt.%) show a synergistic effect by combining high stability and activity of Pt catalysts with the high N2selectivity of Co catalysts. The lower selectivity to N2O is attributed to its selective conversion over Co. The catalysts also showed high water and sulfur tolerance above 350°C.