典型文献
The role of Si coordination structures in the catalytic properties and durability of Cu-SAPO-34 as NH3-SCR catalyst for NOx reduction
文献摘要：
Si coordination structures have been proven to greatly influence the ammonia-selective catalytic reduc-tion(NH3-SCR)catalytic properties and the hydrothermal stability of Cu-based silicoaluminophosphate-form catalysts.However,the role of various Si coordination structures in the NH3-SCR reaction over Cu-SAPO-34 catalyst remains unknown.Herein,a batch of Cu-SAPO-34 samples with various Si contents was synthesized via a one-pot method to study the role of Si coordination structures in the NH3-SCR catalytic properties and hydrothermal stability.Cu/34-2 with the highest proportion of Si(xOAl)(x=1～3)struc-tures exhibits remarkable durability with 90％NO reduction efficiency within 200～450℃even after a hydrothermal aging treatment at 850℃.In contrast,Cu/34-1 and Cu/34-4 with the highest proportions of Si(4OAl)and Si(0OAl)structures,respectively,are significantly deactivated by the same hydrothermal treatment.To better understand this phenomenon,the relationship between the Si coordination struc-tures and SCR performance is established using characterization techniques and kinetics measurements.Results reveal that a high content of Si(4OAl)and Si(0OAl)is detrimental to the hydrothermal stability of Cu-SAPO-34 catalyst.However,Si(xOAl)(x=1～3)structures are conducive to the stabilization of isolated Cu2+,thus enhancing the stability to severe hydrothermal treatment.
文献关键词：
中图分类号：
作者姓名：
Zhen Chen;Ce Bian;Chi Fan;Tao Li
作者机构：
Key Laboratory of Material Chemistry for Energy Conversion and Storage,Ministry of Education,Hubei Key Laboratory of Material Chemistry and Service Failure,School of Chemistry and Chemical Engineering,Huazhong University of Science and Technology,Wuhan 430074,China
文献出处：
引用格式：
[1]Zhen Chen;Ce Bian;Chi Fan;Tao Li-.The role of Si coordination structures in the catalytic properties and durability of Cu-SAPO-34 as NH3-SCR catalyst for NOx reduction)[J].中国化学快报（英文版）,2022(02):893-897
A类：
silicoaluminophosphate,xOAl,4OAl,0OAl
B类：
role,Si,coordination,structures,catalytic,properties,durability,SAPO,NH3,SCR,NOx,reduction,have,been,proven,greatly,influence,ammonia,selective,hydrothermal,stability,catalysts,However,various,reaction,over,remains,unknown,Herein,batch,samples,contents,was,synthesized,via,one,pot,method,study,highest,exhibits,remarkable,efficiency,within,even,after,aging,treatment,In,contrast,proportions,respectively,are,significantly,deactivated,by,same,To,better,understand,this,phenomenon,relationship,between,performance,established,using,characterization,techniques,kinetics,measurements,Results,reveal,that,detrimental,conducive,stabilization,isolated,Cu2+,thus,enhancing,severe
AB值：
0.420507
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
