金属离子对离子液体中竹子酸解的影响(4)

ThetimecourseofTRSyieldfrombambooin[C4mim]ClwithCu2+

ionsasco-catalystfor7hwasmonitoredinthisstudy.Regressionanalysisoftheexperimentaldatabynon-linearleastsquarescurvewas?ttedusingsoftwareOrigin7.0,asshowninFig.3,whereR2=0.9913,k1andk2,therateconstantsforTRSfor-mationandTRSdegradation,weredeterminedas0.1844hà1and0.5143hà1,respectively.TRSyieldincreasedremarkablywiththeincreaseofreactiontimeinthebeginning,theyieldofglucosereached67.1%within4h.Thereafter,decreasedTRSyieldwasobtainedwiththeincreasedreactiontime,indicatingthatreducingsugarsweredecomposed.Theresultswasingoodagreementwithpreviousworks(Zhuangetal.,2013),suggestingthatthismodelgavereasonablelevelsofagreementwithexperimentaldataofbio-masshydrolysis.4.Conclusion

ThisstudyhasshowntheeffectofdifferenttypesofmetalionsontheacidcatalyzedhydrolysisofBambooin[C4mim]Cl.ThemosteffectiveionwasCu2+ionandthemaximumreducingsugaryieldof67.1%wasachievedat100°Cafter4-hhydrolysiswithaCu2+ionconcentrationof0.23%(w/w).Thishydrolysismethodrequirednopretreatmentsintheprocessandeffectivelyimprovedtheef?ciencyofhydrolysis.Theco-additionofcopperionanddilutehydrochlorideacidinILscouldbeavaluablemethodtofacilitatecost-ef?cientconversionofbiomassintobiofuelsorbiobasedproducts.

Acknowledgements

ThisresearchwassupportedbytheNationalNaturalScienceFoundationofChina(Grant21106191,21206175),NaturalScienceFoundationProjectofCQCSTC(GrantcstcjjA50002),and

FundamentalResearchFundsfortheCentralUniversities(projectNo.CQDXWL-2013-019).

AppendixA.Supplementarydata

Supplementarydataassociatedwiththisarticlecanbefound,intheonlineversion,athttp://dx.doi.org/10.1016/j.biortech.2014.09.125.References

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