Synthesis and characterization of new low-cost ILs based on butylammonium cation and application to lignocellulose hydrolysis
作者:José Carlos de Andrade Neto、Allex de Souza Cabral、Lucas Rissato Dognani de Oliveira、Ricardo Belchior Torres、Andreia de Araújo Morandim-Giannetti
DOI:10.1016/j.carbpol.2016.01.069
日期:2016.6
and characterized by nuclear magnetic resonance and infra-red spectroscopy. One of these liquids, n-butylammonium acetate, was used in the treatment of coir fiber prior to acid hydrolysis. For this purpose, the fiber was pulped with 8% (w/w) sodium hydroxide for 6h under 2.5 atm pressure at 137°C and then treated with IL for 2h at 90°C. The samples were hydrolyzed in acetic acid at different concentrations
获得了十四种离子液体(ILs),并通过核磁共振和红外光谱进行了表征。在酸水解之前,将其中一种液体乙酸正丁铵用于椰壳纤维的处理。为此目的,将纤维在137°C的2.5个大气压下与8%(w / w)的氢氧化钠制浆6h,然后在90°C下用IL处理2h。样品在乙酸中以不同的浓度和温度水解。测定所有样品中的还原糖浓度,并确定最佳水解条件(在122.4°C时为32.2%的乙酸)。还研究了反应时间,并且在3小时时转化率最大化。在最佳水解条件下,将粗纤维,制浆纤维和经过IL处理的纤维水解,可得到8.53%,47.58%和89.75%的还原糖,