Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Modern Chemical Industry》 2011-S1
Add to Favorite Get Latest Update

Removal of COS from N_2 by adsorption on PEI/SBA-15

MA Hui,CHEN Shao-yun,ZHANG Yong-chun(Dalian University of Technology,Dalian 116023,China)  
Removal of low concentration COS from N2 is studied by PEI modified SBA-15 as the adsorbent.Effect of the loading amounts,adsorption temperature and impurity gas on COS adsorption of these adsorbents is studied.The adsorbents are characterized by XRD,chemisorb analyzer and FT-IR.After PEI loading the structure of SBA-15 remained unchanged and a significant decrease in surface area is observed.FT-IR spectra show that chemical adsorption occurred.The results show that 50% PEI/SBA-15 has the most perfect adsorption performance at 28℃.The breakthrough sulfur capacity is 5.383 mg/g,and saturated sulfur capacity is 11.698 mg/g.The breakthrough sulfur capacity and saturated sulfur capacity could respectively increase to 11.724 mg/g and 32.38 mg/g when the adsorption temperature is 60℃.In addition,H2S is found by GC when the adsorption temperature is 50℃,60℃,70℃.This show that chemical adsorption occurred.The 4.9 mL/L CO2 in N2 tremendously decreases the COS adsorption capacity.The adsorbent can be regenerated by N2 at 100℃.
【CateGory Index】: TQ028.15
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved