自由基控制的BZ振蕩反應研究.pdf

1、上海師范大學碩士學位論文自由基控制的BZ振蕩反應研究姓名：葛春華申請學位級別：碩士專業(yè)：物理化學指導教師：李和興2005050111戶功奮趁房的刀2報渭友應房兌AbstractChemicaloscillationisoneofthehotsubjectsofmodemphysicalchemistry.Astheclassicalkineticsandthermodynamicscantexplainchemicalreactions

2、thestudiesonthechemicalreactionswillbeusefultodeveloptheprincipleofphysicalchemistry.BesidesHavingfoundquitealotofoscillatingphenomenainthelifeentitythuschemicaloscillationhaveinvokedconsiderableinterestsandextensiveaten

3、tion.UptonowagreatnumberofchemicaloscillatorshavebeenreportedamongthemBelousovZhabotinskii(BZ)typereactionshavebeenstudiedmostthoroughly.NearlyalltheorganicsubstratesusedinBZoscillatingreactionsareeasilybrominatedsuchast

4、hosewithactivemethylenegroupsorbenzenecycles.Iftheorganicsubstrateisunabletobebrominateditisnecessarytoaddeitherabromineagent(e.g.acetone)orareducedagent(e.g.Fe(phen)32)orbubblethesolutionwithaninertgasflow(usuallyaN2flo

5、w)orperformtheoscillationsinthecontinuousflowstirredtankreactor(CSTR)toremoveexcessBr2producedduringtheoscillation.OnlyveryfewBZtypeoscillatorshavebeenreportedsofarwhichinvolvesinglesubstrateunabletobebrominated.Itiswell

6、knownthatbothsaccharidesandaminoacidsarethebasicmaterialsforthelivingbodies.Studiesonthechemicaloscillationswiththeorganicsubstrateswhichareessentialforthelivingbodiescangreatlyhelptounderstandtheperiodicbehaviorinvariou

7、sbiologicalprocesses.InthepresentdissertationseveralBZtypeoscillatorswithsaccharidesandaminoacidsassubstrateshavebeendesigned.OnonehandthepresentworkmayenlargethescopeofBZoscillatingreactionsystems.Ontheotherhandasbothsa

8、ccharidesandaminoacidsareunablebrominatedstudiesonthereactionmechanismofthesesystemswillresultinthemodificationofFKNmechanism.Furthermoremanysequentialoscillationshavebeenobservedintheasdesignedoscillatingsystems.Thesest