新型低温高活性NH_3-SCR催化剂制备及性能研究
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- 英文论文题名：Preparation and Properties on Novel Low Temperature and High Active for NH_3-SCR Catalyst
- 论文作者：于力娜 ; 张克金 ; 张斌 ; 崔龙 ; 韩建 ; 潘艳春 ; 胥洲
- 英文论文作者：Yu Lina ; Zhang Kejin ; Zhang Bin ; Cui Long ; Han Jian ; Pan Yanchun ; Xu Zhou ; China FAW Group Corporation R&D Center
- 年：2016
- 作者机构：中国第一汽车股份有限公司技术中心;
- 论文关键词：NH_3-SCR ; 高活性 ; 低温 ; 新型
- 英文论文关键词：NH_3-SCR ; high active ; low temperature ; novel
- 会议召开时间：2016-10-26
- 会议录名称：2016中国汽车工程学会年会论文集
- 英文会议录名称：Proceedings of 2016 SAE-China Congress
- 语种：中文
- 分类号：U464.172
- 学会代码：QCGC
- 会议名称：2016中国汽车工程学会年会暨展览会
- 会议地点：中国上海
- 主办单位：中国汽车工程学会
- 学会名称：中国汽车工程学会
- 页数：4
- 文件大小：826k
- 原文格式：O
- 会议级别：全国
摘要
采用浸渍法制备了Ce/Cu-Beta和Cu-Ce/Beta两种改性分子筛催化剂,并对其理化特性及SCR反应活性进行了表征。尽管两种催化剂都含有相同Cu、Ce金属元素,但是由于引入方式的不同,结果表明与Cu-Ce/Beta催化剂相比,所制备的Ce/Cu-Beta催化剂具有较低的起始还原温度、较大的弱酸和中强酸量;150℃NOx转化率为78%,200℃时NOx转化率可达到98%,表现出良好的低温高活性;经过高温水热和预硫化处理后,表现出较好的高温水热稳定性和抗硫能力。
Ce/Cu-Beta and Cu-Ce/Beta were prepared by co-impregnation method,physic-chemical properties as well as its catalytic characteristics had been investigated.While both catalysts containing the same Cu and Ce,but due to different ways of introducing,the results showed that Ce/Cu-Beta catalyst had lower initial reduction temperature,the larger of weak and strong acid;150℃ NOx conversion rate was 78% and 200℃ can reach 98%,which showed good activity at low temperature and better high temperature hydrothermal stability and sulfur tolerance after high temperature hydrothermal and pre vulcanization treatment.
Ce/Cu-Beta and Cu-Ce/Beta were prepared by co-impregnation method,physic-chemical properties as well as its catalytic characteristics had been investigated.While both catalysts containing the same Cu and Ce,but due to different ways of introducing,the results showed that Ce/Cu-Beta catalyst had lower initial reduction temperature,the larger of weak and strong acid;150℃ NOx conversion rate was 78% and 200℃ can reach 98%,which showed good activity at low temperature and better high temperature hydrothermal stability and sulfur tolerance after high temperature hydrothermal and pre vulcanization treatment.
引文
[1]杨海鹏,姜水燕,周仁贤.铜改性分子筛的低温NH3-SCR性能研究[J].浙江大学学报(理学版),2014(04).
[2]Benat Pereda-Ayo,Torre U D L,Maria Jose Illan-Gomez,et al.Role of the different copper species on the activity of Cu/zeolite catalysts for SCR of NO x with NH 3[J].Applied Catalysis B Environmental,2014,147(7):420-428.
[3]杨海鹏.Cu-Ce改性USY分子筛的低温NH3-SCR性能的研究[D].浙江大学,2014.
[4]高玉英,万家义,郑振华.Cu-Ce/ZSM-5催化剂的表征[C]全国青年催化学术会议,2001.
[5]刘海燕.过渡金属(Fe、Cu)改性Beta分子筛催化剂在NH3-SCR反应中的应用研究[D].天津大学,2014.
[6]Peden C H F,Kwak J H,Burton S D,et al.Possible origin of improved high temperature performance of hydrothermally aged Cu/beta zeolite catalysts[J].Catalysis Today,2012,184(1):245-251.
[2]Benat Pereda-Ayo,Torre U D L,Maria Jose Illan-Gomez,et al.Role of the different copper species on the activity of Cu/zeolite catalysts for SCR of NO x with NH 3[J].Applied Catalysis B Environmental,2014,147(7):420-428.
[3]杨海鹏.Cu-Ce改性USY分子筛的低温NH3-SCR性能的研究[D].浙江大学,2014.
[4]高玉英,万家义,郑振华.Cu-Ce/ZSM-5催化剂的表征[C]全国青年催化学术会议,2001.
[5]刘海燕.过渡金属(Fe、Cu)改性Beta分子筛催化剂在NH3-SCR反应中的应用研究[D].天津大学,2014.
[6]Peden C H F,Kwak J H,Burton S D,et al.Possible origin of improved high temperature performance of hydrothermally aged Cu/beta zeolite catalysts[J].Catalysis Today,2012,184(1):245-251.