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1、非均相氧化法制备利福霉素S文中标黄处均为自查表中存在的问题,请逐一改正。于丽君,陈葵出生年及性别信息请给出。**,朱家文(华东理工大学化学工程研究所,上海200237)摘要:利福霉素S是合成利福平的主要原料,可通过氧化利福霉素SV制得。针对S生产工艺中副反应多、反应介质产生设备腐蚀等问题,开发了以有机溶剂/水的非均相体系代替传统水基体系的氧化新工艺。选定乙酸丁酯/水两相体系为反应溶剂,通过分析比较H2O2、NaClO等5种氧化剂的氧化效果及作用机理,确定NaClO为非均相反应体系的氧化剂。并考察了
2、NaClO浓度、NaClO与SV物质的量比摩尔请全文改为物质的量比。比、温度、pH、反应时间等工艺条件对反应传质过程及氧化效果的影响。结果表明:在c(NaClO)=0.3206mol/L,NaClO与SV物质的量比摩尔比为1.41:1,θ=TT为开氏温度的符号,请全文改为“θ”或“反应温度。”=30℃,pH=12.3,反应12min时,利福霉素S粗品收率及选择性最高,分别为89.02%、92.42%。与相同条件下的传统工艺相比,收率及选择性分别提高3.61%、6.74%,并且空时收率由原工艺的16
3、.75g·/(L•-1·h)-1请不要用幂次方的形式,请用”/”形式表示。下同。增加至139.60g·/(L•-1·h)-1。关键词:利福霉素S;利福霉素SV;非均相氧化;两相体系;选择性;医药与日化原料中图分类号:TQ465.5文献标识码:A文章编号:PreparationofRifamycinSbyHeterogeneousOxidationYULi-jun,CHENKui*,ZHUJia-wen(ChemicalEngineeringResearchCenter,EastChinaUnive
4、rsityofScience&Technology,Shanghai200237,China)Abstract:RifamycinS(S),whichcanbemadebyoxidationofrifamycinSV(SV),isthemainmaterialofrifampicin.TosolvetheproblemsofsidereactionsandequipmentcorrosionintheproductionofS,anewoxidationtechnologywasdeveloped
5、withorganicsolvent/waterheterogeneoussysteminsteadoftraditionalwater-basedsystem.Inthisresearch,butylacetate/watertwo-phasesystemwaschosenasthereactionsolvent.Throughanalyzingandcomparingtheoxidationeffectsandmechanismsofdifferentoxidants,sodiumhypoch
6、lorite(NaClO)wasconformedastheoxidantintheheterogeneoussystem.Besides,theimpactsofvariousfactors,suchasNaClOconcentration,NaClO/SVmolarratio,temperature,pHandreactiontime,onthemasstransfer-reactionprocessandoxidationeffectswereinvestigated.Theresultss
7、howedthatundertheconditionsofNaClOconcentration0.3206mol/L,NaClO/SVmolarratio1.41::1,reactiontemperature30℃,pH12.3andreactiontime12min,theyieldandselectivityofSwerethehighest,whichwere89.02%and92.42%respectively.Comparedwiththetraditionaltechnology,th
8、eyieldandselectivityincreasedby3.61%and6.74%respectivelyunderthesameconditions,andthespace-time-yieldincreasedfrom16.75g·/(L•-1·h)-1to139.60g/(·L•-1·h)-1.Keywords:rifamycinS;rifamycinSV;heterogeneousoxidation;two-phasesystem;selectivity;drugan