简介：利用日本原子力研究机构串列加速器提供的能量为85和95MeV的28Si束流,通过重离子熔合蒸发反应76Ge(28Si,3n),布居了101Pd的高自旋激发态。根据标准在束核谱学实验测量结果,拓展了基于d5/2和1/2-[550]组态的能级纲图,新发现了1/2-[550]组态的非优惠旋称分支,完整观测到了101Pd原子核中正负宇称带的带交叉现象。根据系统性分析,将101Pd中观测到的带交叉现象归咎于g9/2质子顺排。

简介：Variousmesoporouschromiaaluminacatalystswerepreparedbyfivedifferentmethodsbasedonametal-organicframeworkMIL-101andtheircatalyticperformancesoverisobutanedehydrogenationwereinvestigated.ThehighlydispersedchromiumspecieswereproducedoncatalystKCrAl-I1withlargestspecificsurfaceareaof198m2g-1preparedwithaluminiumisopropoxide(Al(i-OC3H7)3)byultrasonicimpregnationmethod.However,thecatalystKCrAl-I2synthesizedbystirringimpregnationpossessedcrystallineα-Cr2O3phase,whichwaspoorlydispersed.TwotypesofCr-richandAl-richCrxAl2-xO3solidsolutions,designatedasCrAl-IandCrAl-IIphase,wereformedoverthecatalystsKCrAl-I3(preparedbyAl(i-OC3H7)3withnitricacidregulation),KCrAl-C4(preparedbyaluminiumchloridehexahydrate)andKCrAl-N5(preparedbyaluminiumnitratenonahydrate).CatalyticevaluationresultsrevealedthatKCrAl-I1exhibitedthehighisobutaneconversionduetoitshighlydispersedchromiumspecies.However,KCrAl-I3,KCrAl-C4andKCrAl-N5showedthehigherisobuteneselectivity(95.2%-96.4%)onaccountoftheformationofchromiaaluminasolidsolutionsinthecatalysts.Moreover,thesolidsolutionoverthechromiaaluminacatalystscouldgreatlysuppressthecokeformation.

简介：Inthiswork,aseriesofMIL-101-SO3H（x）polymericmaterialswerepreparedandfurtherusedforthefirsttimeasefficientheterogeneouscatalystsfortheconversionoffructose-basedcarbohydratesinto5-ethoxymethylfurfural（EMF）inarenewablemixedsolventsystemconsistingofethanolandtetrahydrofuran（THF）.Theinfluenceof–SO3HcontentontheacidityaswellasonthecatalyticactivityoftheporouscoordinationpolymersinEMFproductionwasalsostudied.HighEMFyieldsof67.7%and54.2%couldbesuccessivelyobtainedfromfructoseandinulininthepresenceofMIL-101-SO3H（100）at130°Cfor15h.Thecatalystcouldbereusedforfivetimeswithoutsignificantlossofitsactivityandtherecoveryprocesswasfacileandsimple.Thisworkprovidesanewplatformbyapplicationofporouscoordinationpolymers（PCPs）fortheproductionofthepotentialliquidfuelmoleculeEMFfrombiomassinasustainablesolventsystem.

简介：Adoubleactivecentersystem,namelySalen-Cu（Ⅱ）@MIL-101（Cr）,wassuccessfullysynthesizedviathe“shipinabottle”approach,whichactedasabifunctionalmaterialforbothcaptureandconversionofCO2inasingleprocess.Forthefirsttime,Salen-Cu（Ⅱ）@MIL-101（Cr）catalystwasdevelopedforthesynthesisofpropylenecarbonatefromCO2andpropyleneoxideunderroomtemperatureandambientpressurewithayieldof87.8%over60h.Furthermore,thereactionmechanismwasalsodiscussed.

简介：1996年7月30日至8月3日由国际纯粹物理及应用物理联合会(IUPAP)举办的“大学物理教育国际会议(TheInternationalConferenceonUndergraduatePhysicsEducation)”在美国马里兰大学召开，参加代表有250余人。会议主要讨论：有关物理专业、理工科专业、物

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