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Macroalgal biomass hydrolysis using dicationic acidic ionic liquids
Malihan, Lenny B,Mittal, Neha,Nisola, Grace M,Weldemhret, Teklebrahan G,Kim, Hern,Chung, Wook‐,Jin John WileySons, Ltd 2017 Journal of chemical technology and biotechnology Vol.92 No.6
<P>CONCLUSION: The synthesized DAILs showed dual properties as catalyst and reaction medium for hydrolysis of macroalgae in solvent-less conditions. Shorter oligo-EG chain linked DAILs exhibited faster reaction rates with higher sugar yields. (C) 2016 Society of Chemical Industry</P>
Metal-free mild oxidation of 5-hydroxymethylfurfural to 2,5-diformylfuran
미탈네하,정욱진,Grace M. Nisola,Lenny B. Malihan,서정길,Seong-Poong Lee 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.8
The potential of 4-hydroxy-2,2,6,6-tetramethyl-piperidine-1-oxyl (4-hydroxy-TEMPO radical) as an oxidantwith [bis(acetoxy)-iodo]benzene (BAIB) and acetic acid (CH3COOH) as co-oxidants to convert 5-hydroxymethylfurfural(5-HMF) into 2,5-diformylfuran (2,5-DFF) was investigated. The effects of oxidant/acid dosages, choice of appropriatesolvent, reaction temperature and time were determined to maximize the 2,5-DFF yield. Optimally, 66% 2,5-DFF yield was achieved in TEMPO/BAIB/CH3COOH system at 30 oC after 45min in ethyl acetate. The reaction systemis environmentally benign (metal-free) and energy efficient (mild at short reaction period). With scarce reports on 2,5-DFF production, the developed system provides an alternative route for a better access and wider application of thisimportant platform chemical.