Study of Cu-Ni/SiOb>2b> catalyst prepared from a novel precursor, [Cu(Hb>2b>O)b>6b>][Ni(dipic)b>2b>].2Hb>2b>O/SiOb>2b>, for water gas shift reaction

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• 作者：Ali Reza Salehi Rad ; Maryam Behzad Khoshgouei ; Soheil Rezvani ; Ali Reza Rezvani ; ^{rezvani2001ir@yahoo.ca}
• 关键词：Novel precursor ; [Cu(H2O)6][Ni(dipic)2].2H2O/SiO2 ; Bimetallic catalyst ; Complex ; Water gas shift reaction
• 刊名：Fuel Processing Technology
• 出版年：2012
• 期刊代码：36_03783820
• 类别：ce
• 出版时间：April, 2012
• 卷：96
• 期：Complete
• 页码：9-15
• 文件大小：930 K

摘要

Silica-supported copper-nickel bimetallic catalyst was prepared from [Cu(Hb>2b>O)b>6b>][Ni(dipic)b>2b>].2Hb>2b>O/SiOb>2b> precursor. The cationic-anionic complex, [Cu(Hb>2b>O)b>6b>][Ni(dipic)b>2b>].2Hb>2b>O, was prepared from the reaction of (NHb>4b>)b>2b>[Ni(dipic)b>2b>] with Cu(NOb>3b>)b>2b>.3Hb>2b>O in water and characterized by elemental analysis, conductometric and various spectroscopy techniques such as FT-IR, UV-vis and atomic absorption. The physicochemical characteristics of both precursor and calcined catalyst were carried out using X-ray diffraction, thermal analysis methods (TGA and DSC), FT-infrared, scanning electron microscopy and BET specific surface area. The catalyst was evaluated for water gas shift reaction. When the Cu-Ni/SiOb>2b> catalyst was used for water gas shift reaction at 300 掳C and atmospheric pressure, the CO conversion and COb>2b> selectivity were about 97.83%and 98.67%, respectively, showing higher activity and selectivity than the reference catalyst prepared by impregnation conventional method.