苯甲醛在离子液体中的电化学行为

电化学（中英文） ›› 2006, Vol. 12 ›› Issue (1): 80-84.

苯甲醛在离子液体中的电化学行为

赵宁;董文举;石起增;

河南师范大学化学与环境科学学院河南省环境污染控制重点实验室,河南师范大学化学与环境科学学院河南省环境污染控制重点实验室,河南师范大学化学与环境科学学院河南省环境污染控制重点实验室河南新乡453007,河南新乡453007,河南新乡453007

收稿日期:2006-02-28 修回日期:2006-02-28 出版日期:2006-02-28 发布日期:2006-02-28

Electrochemical Reduction Behavior of Benzaldehyde in the Ionic Liquids

ZHAO Ning,DONG Wen-ju~

(*),SHI Qi-zeng(College of Chemistry and Environmental Sciences,Henan Normal University,Henan Key Laboratory for Environmental Pollution Control,Xinxiang 453007,Henan,China

Received:2006-02-28 Revised:2006-02-28 Published:2006-02-28 Online:2006-02-28

摘要/Abstract

摘要： 应用线性扫描循环伏安法、方波循环伏安法和计时电量法测定苯甲醛在3种离子液体C4M IMBF4、C6M IMBF4和C8M IMBF4中的电化学行为.实验表明,在C4M IIVIBF4离子液体中苯甲醛于GC电极上的还原包含两个连续、不可逆单电子过程,对应的方波I~E曲线峰电位Ep为-1.39 V和-1.69 V,估算的扩散系数分别为D1=1.5×10-8cm2/s和D2=1.3×10-8cm2/s.而在C6M IMBF4和C8M IMBF4离子液体中,则苯甲醛于GC电极仅显示一个电流峰,这可能是因为C4M IMBF4的碱性较C6M IMBF4和C8M IMBF4弱的缘故;而电流的衰减时间亦依C4M IMBF4,C6M IMBF4,C8M IMBF4,次序增长,并会导致更慢的异相动力学过程.

关键词: 苯甲醛, 离子液体, 循环伏安

Abstract: In this paper,the electrochemical reduction of benzaldehyde was investigated in C_4MIMBF_(4)、(C_(6)MIMBF_(4)) and C_(8)MIMBF_(4) ionic liquids by cyclic linear sweep voltammetry,cyclic square-wave voltammetry and chronocoulometry.Benzaldehyde exhibits two successive one-electron irreversible reduction(E_(P1)=-1.39 V,E_(P2)=1.69 V) with GC electrode in C_(4)MIMBF_(4),the voltammetric data for benzaldehyde give diffusion coefficients of 1.5 10~(-8)cm~(2)/s and 1.3 10~(8)cm~2/s.There is one current peak in C_(6)MIMBF_(4)and C_8MIMBF_4 ionic liquids due to their stronger alkalinity then C_4MIMBF_4.The decay time of the charging current became longer in C_(4)MIMBF_(4)、C_(6)MIMBF_(4)、C_(8)MIMBF_(4),and slower heterogeneous kinetics in(C_(6)MIMBF_(4)) and C_(8)MIMBF_(4) ionic liquids.

Key words: Benzaldehyde, Ionic liquids, Voltammetry, Electrochemistry

中图分类号:

O646.54

赵宁;董文举;石起增;. 苯甲醛在离子液体中的电化学行为[J]. 电化学（中英文）, 2006, 12(1): 80-84.

ZHAO Ning,DONG Wen-ju~. Electrochemical Reduction Behavior of Benzaldehyde in the Ionic Liquids[J]. Journal of Electrochemistry, 2006, 12(1): 80-84.

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https://electrochem.xmu.edu.cn/CN/Y2006/V12/I1/80

参考文献

[1]LI Fu-W e i(李福伟),XUO L in-Fe i(肖林飞),X IAChun-Gu(夏春谷).Synthesis of cyc ilc carbonates cat-alyzed by ion ic liqu id m ed iated ZnB r2catalytic system[J].Chem.J.Ch inese Un iversities,2005,26(2):343. [2]Arm srong D W,He L,L iu Y S.Exam ination of ion ic liq-u ids and the ir interaction w ith molecu les,when used asstationary phases in gas chrom atography[J].Anal.Chem.,1999,71(17):3 873. [3]L iu Jing-fu(刘景富),Ch i Yu-guang(迟玉广),JiangGu i-b in(江桂斌),et al.Ion ic liqu id-based liqu id-phase m icroextraction,a new samp le enrichm ent proce-dure for liqu id chrom atography[J].J.Chrom atographyA,2004,1026:143. [4]Kawano R,W atanabe M.Equ ilibrium potentials andcharge transport of an I-/I3-redox coup le in ion ic liq-u id[J].Chem.Commun.2003,3:330. [5]Haffad D,Kam eswari U,BettaharM M,et al.Reductionof benzaldehyde on m etal oxides[J].J.Caw.,1997,172:85. [6]Kazem ifatd A G,Moore D E,Mohamm ad i A.Polaro-graph ic determ ination of benzaldehyde in benzyl alcoholand sod ium d ic lofenac in jection formu lations[J].Jour-nal of Pharm aceutical and B iom ed ical Analysis,2002,30:257, [7]Herrero A,O rtiz M C.Solving the interference due tocoup led reactions in the polarograph ic determ ination ofbenzaldehyde w ith soft m edelling[J].J.E lectroanal.Chem.,1997,432:223. [8]Vann icel M A,Poond i D.The effect of m etal-supportinteractions on the hydrogenation of benzaldehyde andbenzyl alcohol[J],J.Catal.,1997,169:166-175. [9]Doherty A D,B rooks C A.E lectrosynthesis in Room-temperature ion ic liqu ids:Benzaldehyde reduction[J].E lectroch im ica Acta,2004,49:3821. [10]B rooks C A,Dohery A P.E lectrogenerated rad ical an i-ons in room-temperature ion ic liqu ids[J].J.Phys.Chem.B,2005,109(13):6267. [11]Bonhote P,Ana-Pau la D,Papageorgiou N,et al.Hydro-phob ic,h ighly conductive amb ient-temperature moltensalts[J].Inorg.Chem.,1996,35(5):1 168. [12]Holbrey J D,Seddon K R.The phase behaviour of 1-al-kyl 3-m ethylim idazolium tetrafluoroborates Ion ic liq-u ids and ion ic liqu id crystals[J].J.Chem.Soc.Dal-ton.Trans.,1999,999(13):2133. [13]L i Ru xiong(李汝雄).Synthesis and App lications ofI-on ic L iqu ids-green Solvent(绿色溶剂一离子液体的合成与应用)[M].Be ijing:Chem ical Indus仰Press,2004.27. [14]Sweeny B K,Peters D G.Cyc lic voltamm etric study ofthe catalytic behavior of n ickel(I)salen eletrogenerat-ed at a glassy carbon electrode in an ion ic liqu id(1-bu-tyl-3-m ethylim idazolium tetrafluoroborate BM IMBF4[J].E lectrochem.Commun.,2001,3(12);712. [15]PU Guo-gang(蒲国刚),CHEN X in-sheng(陈新生),WANG Er-kang(汪尔康).The investigations ofsquare wave voltamm etry and cyc lic square wave volta-mm etry w ith m icrocomputer-based electrochem ical sys-tem[J].Ch inese Journal of App lied Chem istry(inCh inese),1987,4(6):31.