對二甲苯氧化過程中催化劑的影響規(guī)律研究.pdf

1、浙江大學(xué)碩士學(xué)位論文對二甲苯氧化過程中催化劑的影響規(guī)律研究姓名：張莉申請學(xué)位級別：碩士專業(yè)：化學(xué)工程指導(dǎo)教師：李希2003.3.1浙江大學(xué)碩士論文AbstractPureterephthalicacidisanimportantrawstuffusedforsyntheticpreparationofpolyesterfibreandplastic，whichisproducedviaairoxidationofP—xylerieina

2、ceticacidwithcobalt／manganese／bromidecatalystCatalysteffectsontheoxidationprocessareresearchedanddiscussedinthispaperTheworkincludestwopartsnsⅡveffectsofC0MnBrcomponentsoneachstepof血emainreactionswereinvestigatedexperime

3、ntally，andtherelatedkineticconstantsfortypicalindustrialreactionconditions，suchasthatofAnlocoandMitsuitechnologies，wereobtainedSecondlvvariouskindsofcatalyticaddifivesweredevelopedandtestedinordertofmdanewternary—compone

4、ntcatalystsystemItisshownthatincreaseoftheconcentrationofCoMnBrcatalystwillacceleratebothmainreactionsandcombustionreactionsandBrisⅡIemostseFLsitivecatalyticcomponentinCoMn—Brinfluencingthereactionrates；ratioofCo／Mnhasmo

5、leremarkableeffectsoncombustionreactionsthallthatonmainreactions，andloWratioofCo／MnCallreducethecombustionitsoptimumvaluedependsonpracticalreactioncondifionsThesereSultsweretreatedasexpressionsofrateconstantsVStotalconce

6、ntrafionofCo—MnBrmoleratioofCoqVlnaswellasmoleratioofBr／CoForthecatalystdevelopmentandtestaserialofnewadditiveswithafourthmetalornon—metalcompoundwereconsideredExperimentsshowthatKAc，NaOH，Hf(Ac)4，Zr(Ac)4，HCl，NaClandC5H5N

7、canacceleratepxyleneoxidation；acetatesofNd，Pr，Gd，DySm，hCeandHN03donotchangethereactionrates，butCeacetatecanpreventMnfromprecipitation；EDTAwillintroduceaninductionperiodatthebeginningofpxyleneoxidation；Feiondoesnotinfluen