| 燃烧合成TiCe_(0.2)W_(0.2)O_x催化剂催化还原NO_x性能 |
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| 引用本文： | 杨洋,林赫,陈婷,黄震.燃烧合成TiCe_(0.2)W_(0.2)O_x催化剂催化还原NO_x性能[J].上海交通大学学报,2014,48(6):761-766. |
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| 作者姓名： | 杨洋 林赫 陈婷 黄震 |
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| 作者单位： | (上海交通大学 动力机械与工程教育部重点试验室, 上海 200240) |
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| 基金项目： | 国家自然科学基金(51176118);上海市启明星跟踪计划(13QH1401600)资助项目 |
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| 摘 要： | 为了扩宽选择性催化还原(SCR)催化剂去除NOx高活性温度窗口,运用燃烧合成法制备了一系列Ti-Ce-W复合金属氧化物催化剂.此外,研究了不同空速对该催化剂性能的影响,并尝试直接用燃烧法将催化剂涂覆于堇青石陶瓷载体表面,涂覆量达到25%.实验结果表明:n(W)∶n(Ti)=0.2(n为物质的量)时其SCR性能最好;TiCe0.2W0.2Ox的NO去除率在200~440℃内达到100%;N2选择性在400℃以内均能达到100%;在空速11 400h-1,温度250~450℃时,NO去除率维持在95%以上,N2选择性为100%.
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| 关 键 词： | 选择性催化还原 氮氧化物 燃烧合成 堇青石载体 柴油机 |
| 收稿时间： | 2013-07-31 |
NOx Removal Performance on Self-Propagating High-Temperature Synthesis Prepared TiCe0.2W0.2Ox Catalyst |
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| YANG Yang;LIN He;CHEN Ting;HUANG Zhen.NOx Removal Performance on Self-Propagating High-Temperature Synthesis Prepared TiCe0.2W0.2Ox Catalyst[J].Journal of Shanghai Jiaotong University,2014,48(6):761-766. |
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| Authors: | YANG Yang;LIN He;CHEN Ting;HUANG Zhen |
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| Institution: | (Key Laboratory for Power Machinery and Engineering of the Ministry of the Education, Shanghai Jiaotong University, Shanghai 200240, China) |
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| Abstract: | In order to broaden the temperature window of nitrogen oxide removal efficiency of selective catalytic reduction （SCR） catalyst, the research of Ti-Ce-W mixed oxide catalysts was conducted. Among a series of Ti-Ce-W mixed oxide catalysts prepared by SHS (self-propagating high-temperature synthesis) method, catalyst with n(W)∶n(Ti)=0.2(n is the amount of substance) showed a 100% NO removal efficiency from 200 to 440 ℃ and 100% N2 selectivity below 400 ℃. The SCR characteristic of TiC0.2W0.2Ox was also tested under high GHSV( gas hourly space velocity) of 11 400 h-1. Besides by directly deposit the catalyst on cordierite carrier, a 95% NO removal efficiency and a 100% N2 selectivity from 250 to 450 ℃ were obtained. |
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| Keywords: | selective catalytic reduction （SCR） nitrogen oxide self-propagating high temperature synthesis (SHS) cordierite carrier diesel |
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