乙苯脱氢制取苯乙烯反应条件的研究

盛奎龙1,毛元燕2,裴松2,郑立辉2(1.,473132;2.,430023):使用氧化铁系催化剂,研究了乙苯脱氢制取苯乙烯中乙苯转化率和苯乙烯的选择性与温度进料比的关系实验证明,乙苯的转化率受温度和进料比的共同影响,在所研究的范围内,苯乙烯的选择性主要受温度影响,选择合适的进料比对提高转化率和选择性至关重要:乙苯脱氢;苯乙烯;转化率;选择性:TQ241.21:A:1003-3467(2006)11-0024-02StudyontheConditionforPreparingStyreneviaEthylbenzeneDehydrogenationSHENGKui-long1,MAOYuan-yan2,PEISong2,ZHENGLi-hui2(1.NanyangWaxFineChemicalPlant,Nanyang473132,China;2.ChemicalEngineering&Env-ironmentalEngineeringDepartment,WuhanPolytechnicUniversity,Wuhan430023,China)Abstract:Therelationshipsoftheconversionofethylbenzenedehydrogenationtostyrenewithironoxideascatalys,ttheselectivityofstyreneandtemperatureandfeedratioareinvestigated.Ithasbeenprovedthattheethylbenzeneconversionisinfluencedbybothtemperatureandfeedratiobutthestyreneselectiv-ityismainlyaffectedbyreactiontemperature.Itisalsoimportanttoimprovetheconversionandselectivitybyselectingsuitablefeedratio.Keywords:ethylbenzenedehydrogenation;styrene;conversion;selectivity1,[1],,22.1:,;;,:GC-9800TFP,;:250,20mm,550mm,2.2250,,,,30min,,,::0.07MPa,:100,:150,:140,:100mA,:1L33.1::2006-08-21:(1963-),,,,:(0377)6382700924HENANCHEMICALINDUSTRY200623,,,,,;,,,,,,,[2],,116.7910.0013.5820.005400.26780.54290.59960.64590.70455600.32890.62180.69980.72060.77375800.39640.69520.74630.78530.83086000.46860.76030.80520.83840.8757注:进料比指水蒸气与乙苯的物质的量比1,,;,3.21.4mL/min,1.51,6.791,250,,,111,540600,9.59%24.88%,1.59;57.16%69.59%,0.22;2.16,,,,,3.3600,250,1.4mL/min,6.79110.00113.58120.001,,222,,6.79120.001,28.44%14.02%,50%;70.56%63.98%,10%;,10%,;,,,,,,4,6.791,540,9.59%57.16%;600,24.87%69.59%,2511:黄庭刚1,蒋清民1,张宝林2(1.,450042;2.,450002):讨论了高锰酸钾氧化玉米淀粉的机理,计算出其表观活化能为73.83kJ/mol,高锰酸钾利用率在25%~30%之间:氧化淀粉;高锰酸钾;氧化:TQ432:A:1003-3467(2006)11-0026-03StudyonProcessofCornStarchOxidationbyKMnO4HUANGTing-gang1,JIANGQing-min1,ZHANGBao-lin2(1.VocationalCollegeofChemicalIndustry,HenanUniversityofTechnology,Zhengzhou450042,China;2.InstituteofChemicalEngineering,ZhengzhouUniversity,Zhengzhou450002,China)Abstract:ThemechanismofcornstarchoxidationbyKMnO4isdiscussed.Theactivationenergyis73.83kJ/mo,ltheutilizationrateofKMnO4is25%~30%.Keywords:oxidizedstarch;potassiumpermanganate;oxidation1,,,,[1],,+7+2,[O],:2MnO-4+6H+2Mn2++3H2O+5[O]C6(OH)(CHO),(COOH),,[2],,,MnO222.1:,,500mL,(0~100),,,,,,,,5.48%17.31%,,;600,,,,,,,,:[1]Drago,RussellS,Jurczyk,eta.lOxidativedehydrogena-tionofethyl-benzenetostyreneovercarbonaceouscata-lysts[J].AppliedCatalysisA:General,1994,112(2):117-124.[2]SmithJM,HendrickCVanNess,Michael.IntroductiontoChemicalEngineeringThermodynamics[M].北京:化学工业出版社,2002.26HENANCHEMICALINDUSTRY200623