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催化学报 2010
纳米Ce1MgxZr1-xO2固体多相催化剂的制备、表征及催化合成四氢苯并[b]吡喃衍生物的性能, PP. 631-636 Keywords: Ce1MgxZr1-xO2,magnesiumoxide,co-precipitation,nanosizedmaterial,tetrahydrobenzo[b]pyran Abstract: ？AseriesofCe1MgxZr1-xO2mixedmetaloxideswithdifferentmolarratioswerepreparedbysimpleco-precipitationandwerecharacterizedbyX-raydiffraction,infraredspectroscopy,scanningelectronmicroscopy,energydispersivespectroscopy,temperature-pro-grammeddesorptionofCO2,andN2adsorptiontechniques.Thepreparedmaterialsweretestedforcatalyticactivitybythesynthesisoftet-rahydrobenzo[b]pyranderivativesusingathreecomponentreaction(aromaticaldehydes,malononitrile,anddimedone)inanethanolme-dium.ThebestcatalyticactivitywasobtainedwithCe1Mg0.6Zr0.4O2.TheparticlesizeorcrystallitesizewasestimatedusingtheDe-bye-Scherrerequation.Theadditionofmagnesiumoxideintotheceria-zirconialatticeresultedintheformationofnanosizedparticlesrang-ingfrom5.41to9.78nm.Thisworkdescribesthecatalyticbehaviorofmagnesiumoxideinmixedmetaloxidesystems.
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