分子筛催化剂上甲苯烷基化合成异丙基甲苯的分析

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1、ABSTRACTINVESTIGATIoNOFSYNTHESISOFISoPRoPYLToLUENEWITHTOLUENEoVERZEOLITECATALYSTABSTRACTInthispaper,basedonzeolitecatalyst，theapplicationandbasicresearchonsynthesisofisopropyltolueneiscarriedout．Basedonanisothermalintegralreactor(reactordimension：①16×3mm，L300mm)，themostsuita

2、blecatalystforthesythesisofisopropyltoluenewasstudied，andthebestchoicewas13zeolitecatalystbycomparisonofHZSM-5，HM，HYand13．Vapor／liquidphasealkylationreactionoftolueneandpropylene／isopropylalcoholwerecardedoutover13zeolitecatalyst，respectively．Itwasobtainedthattheliquidphasea

3、lkylationissuperiortogasalkylationandalkylationoftoluenewithpropyleneissuperiortoalkylationoftolueneandisopropylalcoh01．Thestandardheatofformation，freeenergyandheatcapacityofisopropyltoluenewereestimatedbymeansofBenson’SandMissena’sgroupcontribution．Thethermodynamicanalysiso

4、fsynthesisprocessofisopropyltolueneandthecalculationsofequilibriumconstantswerecarriedout．Thentheeffectsoftemperature，tolueneandpropylenemolarratioandIII北京化工大学硕士学位论文liquidspacevelocityonthealkylationreactionprocess(includingconversionandselectivity)wereinvestigatedbymeansoft

5、hesingle—factorexperimentalmethodunderawideexperimentrange．Andtheorthogonaltestdesignwasemployedtoinvestigatetheglobaleffectofthesefactorsmentionedaboveonthealkylationprocessandthesuitableoperatingconditionsweredeterminedasfollows：temperatureof220℃，toluene／propylenemolarrati

6、oof8：1andspacevelocityof30h-1．Underaboveconditions，theselectivityofisopropyltoluenecouldreach97．69％andtheselectivityofo-isopropyltoluenecouldbecontrolledat4．99％．KEYWORDS：isopropyltoluene，zeolite，alkylation，operatingcondition，thermodynamicIV符号说明峰面积定压摩尔热容，kJ·molq"K"1反应器内径，nffn

7、校正因子吉布斯自由能，kJ‘mol。焓，kJ·mol‘1化学平衡常数反应器长度，nHn摩尔质量，g．mol‘1质量，g物料摩尔流量，mol·h-1指数或摩尔数压力，Pa通用气体常数，8．3145J·molq'K"1熵，J'mol-i'K-1热力学温度，K温度，℃内标物质量，g催化剂装填质量，g转化率质量百分含量摩尔分数对称数摩尔分数光学异构体个数或西勒模数原料液密度，g‘“。1内标物或色谱柱外径，nm变化量反应计量系数对异丙基甲苯邻异丙基甲苯间异丙基甲苯正丙基甲苯二异丙基甲苯生成气体丙烯组分反应器入口极差分析表中列数液体所取液体产品测量反应器出

8、口部分反应标准物质量水摩尔分数反应器入口反应器出口标准态腓川一一m—fgnim．，。m一呲刚rsw～y。淋m呲。，‘IlrL【A唧D，GHKLMmNn