Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Industrial Catalysis》 2006-06
Add to Favorite Get Latest Update

Effects of acidity of the carrier on tolerance to sulfur of nickel-based catalysts for aromatic hydrogenation

LI Cheng-yong~1,HUANG Hua~2 (1.Department of Biology and Environment Engineering,Changsha University,Changsha 410003,Hunan,China;2.Sinopec Changling Refinery & Chemical Co.,Ltd,Yueyang 414012,Hunan,China)  
Several nickel-based aromatics hydrogenation catalysts supported on γ-Al_2O_3,HY,SiO_2-Al_2O_3 and sepiolite were prepared.Tolerance of the catalysts to sulfur poisoning was investigated via hydrogenation of toluene containing thiophene in a fixed-bed continuous-flow microreactor at(1.0 MPa),200 ℃ and LHSV 2.0 h~(-1).Acidity of the catalysts were characterized by(pyridine-)(adsorption) and electronic properties by CO-adsorption infrared(IR) spectra.It was shown that (electron-)(deficiency) of the Ni species increased with acidity of the carrier and hence enhanced the activity and(tolerance) to sulfur poisoning.Tolerance of the catalysts to sulfur was mainly dependent on(Brnsted) acid sites on surface of the carrier and was independent on Lewis acid sites.
【CateGory Index】: TE624.5
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