典型文献
Redistributing Cu species in Cu-SSZ-13 zeolite as NH3-SCR catalyst via a simple ion-exchange
文献摘要：
The nature and distribution of Cu species in Cu-SSZ-13 play a vital role in selective catalytic reduction of NO by NH3 (NH3-SCR),but existing methods for adjusting the Cu distribution are complex and difficult to control.Herein,we report a simple and effective ion-exchange approach to regulate the Cu distribution in the one-pot synthesized Cu-SSZ-13 that possesses sufficient initial Cu species and thus provides a "nat-ural environment" for adjusting Cu distribution precisely.By using this proposed strategy,a series of Cu-SSZ-13x zeolites with different Cu contents and distributions were obtained.It is shown that the dealu-mination of the as-synthesized Cu-SSZ-13 during the ion-exchange generates abundant vacant sites in the double six-membered-rings of the SSZ-13 zeolite for relocating Cu2+ species and thus allows the redistribution of the Cu species.The catalytic results showed that the ion-exchanged Cu-SSZ-13 zeolites exhibit quite different catalytic performance in NH3-SCR reaction but superior to the parent counterpart.The structure-activity relationship analysis indicates that the redistribution of Cu species rather than other factors (e.g.,crystallinity,chemical composition,and porous structure) is responsible for the improved NH3-SCR performance and SO2 and H2O resistance.Our work offers an effective method to pre-cisely adjust the Cu distribution in preparing the industrial SCR catalysts.
文献关键词：
中图分类号：
作者姓名：
Ben Liu;Nangui Lv;Chan Wang;Hongwei Zhang;Yuanyuan Yue;Jingdong Xu;Xiaotao Bi;Xiaojun Bao
作者机构：
National Engineering Research Center of Chemical Fertilizer Catalyst,College of Chemical Engineering,Fuzhou University,Fuzhou 350002,China;Qingyuan Innovation Laboratory,Quanzhou 362801,China;Sinochem Quanzhou Energy Technology Co,Ltd,Quanzhou 362000,China;Department of Chemical & Biological Engineering,University of British Columbia,2360 East Mall,Vancouver,BC V6T 1Z3,Canada;State Key Laboratory of Photocatalysis on Energy & Environment,College of Chemistry,Fuzhou University,Fuzhou 350116,China
文献出处：
引用格式：
[1]Ben Liu;Nangui Lv;Chan Wang;Hongwei Zhang;Yuanyuan Yue;Jingdong Xu;Xiaotao Bi;Xiaojun Bao-.Redistributing Cu species in Cu-SSZ-13 zeolite as NH3-SCR catalyst via a simple ion-exchange)[J].中国化学工程学报（英文版）,2022(01):329-341
A类：
Redistributing,13x,dealu,relocating
B类：
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AB值：
0.490482
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