%0 Journal Article
%T Co-ETS-10andCo-AM-6asactivecatalystsfortheoxidationofstyrenetostyreneoxideandbenzaldehydeusingmolecularoxygen
%A Shuvo Jit Datta
%A Kyung Byung Yoon
%J ´ß»¯Ñ§±¨
%P 897-905
%D 2015
%R 10.1016/S1872-2067(15)60864-6
%X £¿PristineETS-10andAM-6andtheirCo2+-exchangedformswereprepared,andtheircatalyticactivitiestowardtheoxidationofstyreneinoxygenatmospherewerestudiedindimethylformamide.ThecatalystsweredenotedasCo-E10-n(n=0,9,26,68,81)andCo-A6-m(m=0,8,23,63,79),wherenandmdenotethedegreeofCo2+exchange.Theproductsoftheoxidationprocesswereidentifiedasstyreneepoxide(E)andbenzaldehyde(B).Boththepristineforms,ETS-10(Co-E10-0)andAM-6(Co-A6-0),andCo2+-exchangedformsdisplayedcatalyticactivities.Withincreasingnorm,theconversion,andhencetherate,increased.Specifically,theratesvariedfrom6.1to12.5mmol¡¤g-1¡¤h-1withincreasingn(Co-E10-ncatalysts)andfrom5.4to12.4mmol¡¤g-1¡¤h-1withincreasingm(Co-A6-mcatalysts).Incontrast,theE/Bratiodecreasedwithincreasingnorm.Morespecifically,theE/Bratiodecreasedfrom2.1to0.1withincreasingnfrom0to81(Co-E10-ncatalysts)andfrom1.3to0.1withincreasingmfrom0to79(Co-A6-mcatalysts).Co-E10-9displayedthehighestEyieldandCo-A6-79generatedthehighestByield.Thehighestturnoverfrequencyobtainedwas36.3Co-1¡¤h-1,whichwasthehighestoneobtainedamongthoseobtainedfortheCo2+-exchangedzeolitesandmesoporoussilicareferencematerialsstudiedinthiswork.
%K Heterogeneouscatalysis
%K Epoxidation
%K Cobalt
%K C=Cactivation
%K Zeolite
%U http://www.chxb.cn/CN/abstract/abstract21623.shtml