%0 Journal Article
%T Nitrogen-dopedcarbonnanotubesonsiliconcarbideasametal-freecatalyst
%A Cuong Duong-Viet
%A Housseinou Ba
%A Yuefeng Liu
%A Lai Truong-Phuoc
%A Jean-Mario Nhut
%A Cuong Pham-Huu
%J ´ß»¯Ñ§±¨
%P 906-913
%D 2014
%R 10.1016/S1872-2067(14)60116-9
%X £¿Ahierarchicalmetal-freecatalystconsistingofnitrogen-dopedcarbonnanotubesdecoratedontoasiliconcarbide(N-CNTs/SiC)macroscopichoststructurewasprepared.TheinfluenceofN-CNTsincorporationonthephysicalpropertiesofthesupportwasevaluatedusingdifferentcharacterizationtechniques.Thecatalystwastestedasametal-freecatalystintheselectiveoxidationofH2Sandsteam-freedehydrogenationofethylbenzene.TheN-CNTs/SiCcatalystexhibitedextremelygooddesulfurizationperformancecomparedtoaFe2O3/SiCcatalystunderlessconducivereactionconditionssuchaslowtemperature,highspacevelocity,andalowO2-to-H2Smolarratio.Forthedehydrogenationofethylbenzene,ahigherdehydrogenationactivitywasobtainedwiththeN-CNTs/SiCcatalystcomparedtoacommercialK-Fe/Al2O3catalyst.TheN-CNTs/SiCcatalystalsodisplayedgoodstabilityasafunctionoftimeonstreamforbothreactions,whichwasattributedtothestronganchoringofthenitrogendopantinthecarbonmatrix.TheextrudateshapeoftheSiCsupportallowedthedirectmacroscopicshapingofthecatalystforuseinaconventionalfixed-bedreactorwithouttheproblemsofcatalysthandling,transportation,andpressuredropacrossthecatalystbedthatareencounteredwithnanoscopiccarbon-basedcatalysts.
%K Nitrogen-dopedcarbonnanotubes
%K Siliconcarbide
%K Selectiveoxidation
%K H2S
%K Dehydrogenation
%K Ethylbenzene
%U http://www.chxb.cn/CN/abstract/abstract21351.shtml