简介：Thesupportγ-Al2O3wastreatedwith1-methylnaphthaleneasthemodelreactantbyrespectivelyusingthechemicalstaticadsorptionmethodandtheacceleratedcokingmethodtostudythecokingsitesofγ-Al2O3surface.Thecarbonspeciesformedonγ-Al2O3surfacewereanalyzedbyCAT-CS,TG-MS,IR-OH,andPy-IRtechniques.TheresultsofcharacterizationbyCAT-CSandTG-MStechniquesindicatedthatthecarbonspeciesformedduringthechemicalstaticadsorptionprocessismainlycomposedofthereversiblyadsorbedcokeprecursorswithalowly-condensedstate,whilethatformedaftertheacceleratedcokingprocessisprobablyrelatedwiththeirreversiblyadsorbedcokedepositswithahighly-condensedstate.TheresultsofcharacterizationbyIR-OHandPy-IRtechniquesfurtherimpliedthattheformationofthetwokindsofcarbonspecies,i.e.,cokeprecursorsandcokedeposits,arecloselyrelatedwiththebasichydroxylgroupsandthestrongLewisacidsitesonγ-Al2O3surface.Theresultsleadtoadeepinsightintothecokingmechanismonthealuminasurface.

简介：化学作文，结构和从一个炼油厂的花的FCC平衡催化剂的热稳定性被XRD，英尺红外，DTA-TG，赌注，完全的化学分析，SEM，和XRF描绘。花的FCC平衡催化剂，泥土，钡碳酸盐，和滑石被用作主要原料准备氧化铝在为建筑学瓦的制造磨工厂的粉末要过去常的磨损抵抗的陶器的球。结果证明在合适的明确的表达学习以后，花的FCC平衡催化剂能代替工业氧化铝准备磨球的高效。同时，磨擦的球的各种各样的表演索引能为类似的产品满足优秀标准，并且另外，节省效果的精力在磨擦的节的操作被完成，导致稳固的浪费的成功的全面利用。

简介：Compositematerials(AZ-x)werepreparedbymixingthenanosizedHYzeoliteandγ-Al2O3usingthesol-gelmixingmethodandwereemployedasthesupportforNiMocatalysts(NiMo/AZ-x).ThesecompositesandcatalystswerecharacterizedbyXRD,BET,TPD,TPR,HRTEMandFT-IRspectroscopy.ComparedwiththeNiMocatalystsupportedonγ-Al2O3(NiMo/γ-Al2O3),theseNiMo/AZ-xcatalystsshowhigheractivityinthehydrodesulfurization(HDS)ofFCCdiesel,andtheHDSactivityincreaseswithanincreasingHYmasscontentinthecomposites,providedthattheHYmassfractiondoesnotexceed20%.Comparedwithγ-Al2O3,theintroductionofnanosizedHYzeolitecanimprovetheporousstructureofthecomposites,whichcanbenefitthemasstransferofthereactantmolecules.Furthermore,thenanosizedHYzeoliteinthecompositescanmodifytheirsurfacepropertieswhichwouldincreasetheratioofmetalspeciestobetransformedintoreduciblephaseinlowtemperatureregionandmodifythemorphologyoftheMoS2phasestoformmoremulti-stackedMoS2activephaseswithincreaseddispersionofedgesandcornersofMoatoms.