共被期刊论文引用了2次
您的检索式：您选中1篇文献正在查看引证文献汇总
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | SiO_(2)微球负载Mn-Ce基催化剂的SCR脱硝性能研究显示文摘以St?ber法制备SiO_(2)微球作为Mn基脱硝催化剂载体,对比分析Ce,Cu,Co,Ni掺杂改性效果,表明Ce掺杂的Mn1-Ce1/SiO_(2)具有较优的NO转化率和N_(2)选择性。对比分析了分别以氨水(AH)和六亚甲基四胺(HMTA)为沉淀剂制备的Mn1-Ce1/SiO_(2)和Mn1-Ce1@SiO_(2),其中Mn1-Ce1/SiO_(2)的NO转化率较高,而Mn1-Ce1@SiO_(2)的N_(2)选择性则明显更高。分析表明,Mn1-Ce1/SiO_(2)具有不规则颗粒和片层状结构,Mn1-Ce1@SiO_(2)则为核壳结构;Mn1-Ce1@SiO_(2)的BET比表面积、平均孔径和孔体积分别为118.9 m^(2)·g^(-1),12.6 nm和0.54 cm^(3)·g^(-1),表面Br?nsted和Lewis酸位点浓度分别为13.0和2.4μmol·g^(-1),均高于Mn1-Ce1/SiO_(2)。Mn1-Ce1/SiO_(2)表面Mn4+和Oα相对比例则分别为36.4%和58.9%,均高于Mn1-Ce1@SiO_(2)。Mn1-Ce1/SiO_(2)表面高含量的Mn4+和Oα提供了较强的催化氧化活性,使其获得高NO转化率,同时使NH3,NO_(x)过度氧化生成N_(2)O致N_(2)选择性降低;Mn1-Ce1@SiO_(2)表面Mn4+和Oα含量相对较低而比表面积和表面酸性较高,即保证了较高的NO转化又有良好的N_(2)的选择性。因此,高含量的Mn4+和Oα可通过提高催化反应速率而提高NO转化率,但N_(2)O生成比例同时增加,而高比表面积和表面酸性则通过提供更多的反应位点而提高NO转化率,并可较好地保持高N_(2)选择性。 | 张柏林 张生杨 邓立锋 黎琳 张深根 | 2022 | 稀有金属2022，46，11： | 0 |
| 2 | Anchor single atom in h-BN assist NO synthesis NH_(3):a computational view显示文摘Synthesis of ammonia gas through environmental protection and low-cost electrocatalysis is one of the ways to solve the current human energy problems.Herein,through the study of density functional theory(DFT),a series of transition metal single atoms are embedded in the defect-containing h-BN to construct a TM@B_(2) N_(2)(TM=Ti-Zn,Nb-Ag) two-dimensional nanostructure.The activation effect of these single-atom catalysts on NO molecules and the electrochemical performance of catalyzing NO reduction reaction(NORR)were explored.All reaction pathways are studied in detail,and competition between hydrogen proton and ammonia(NH3) oxidation with NORRs is also explored.Among the16 transition metal atoms we studied,the intercalation of Pb atom into h-BN has the best catalytic activity.The reaction rate-limiting potential of NORR is only 0.55 eV,and the surface HER reaction and ammonia oxidation can be effectively inhibited.It is hoped that our research can further promote the application of h-BN in the field of catalysis and provide some guidance for experimental workers in the field of ammonia synthesis. | Chao-Zheng He Ya-Xing Zhang Jia Wang Ling Fu | 2022 | Rare Metals2022，41，10： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员