简介:Theprojectforcatalyticconversionofbiomassinto1,2-propanedioljointlydevelopedbytheCASDalianInstituteofChemicalPhysics(DICP)hasmadegreatstridesaftersuccessfulcommissioningofa100t/apilotplantatthefirstattemptwiththeconversionrateandproductselectivitybothreachingover90%.
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.