%0 Journal Article
%T NiMo/¦Ã-Al2O3CatalystsfromNiHeteropolyoxomolybdateandEffectofAluminaModificationbyB,Co,orNi
%A Radostina PALCHEVA
%A Lud¨§k KALU?A
%A Alla SPOJAKINA
%A Kv¨§tu?e JIR¨¢TOV¨¢
%A Georgi TYULIEV
%J ´ß»¯Ñ§±¨
%P 952-961
%D 2012
%R 10.1016/S1872-2067(11)60376-8
%X £¿AhydrotreatingNiMo/¦Ã-Al2O3catalyst(12wt%Moand1.1wt%Ni)waspreparedbyimpregnationofthesupportwiththeAnderson-typeheteropolyoxomolybdate(NH4)4Ni(OH)6Mo6O18.Beforeimpregnationofthesupport,itwasmodifiedwithanaqueoussolutionofH3BO3,Co(NO3)2,orNi(NO3)2.ThecatalystswereinvestigatedusingN2adsorption,O2chemisorption,X-raydiffraction,UV-Visspectroscopy,Fouriertransforminfraredspectroscopy,temperature-programmedreduction,temperature-programmeddesorption,andX-rayphotoelectronspectroscopy.TheadditionofCo,Ni,orBinfluencedtheAl2O3phasecompositionandgaveincreasedcatalyticactivityfor1-benzothiophenehydrodesulfurization(HDS).X-rayphotoelectronspectroscopyconfirmedthatthepriorloadingofNi,CoorBincreasedthedegreeofsulfidationoftheNiMo/¦Ã-Al2O3catalysts.ThehighestHDSactivitywasobservedwiththeNiMo/¦Ã-Al2O3catalystwithpriorloadedNi.
%K nickel
%K cobalt
%K boron
%K nickelheteropolyoxomolybdate
%K hydrodesulfurization
%U http://www.chxb.cn/CN/abstract/abstract20722.shtml