Choline-based ionic liquids, involving various alkyl chains lengths and carboxylates derived from biobased acids, have been synthetized with high yields through a three step procedure. These biobased ionic liquids showed excellent solubilisation properties for cellulose and lignin under mild conditions. Cellulose could be dissolved up to 32.5% and lignin up to 65.4% without transformation towards amorphous
crystallinity. It is soluble in very few solvents such as DMSO, harsh alkaline or acid solutions and imidazolium ionicliquids. In this paper we prepared biosourced more ecofriendly ionicliquids which can tolerate high amounts of water as a co-solvent and which are recyclable. The solubility of the paramylon was then evaluated depending of the nature of the ionicliquid and the structure and thermal properties
Efficient hydrogenation of levulinic acid catalysed by spherical NHC-Ir assemblies with atmospheric pressure of hydrogen
作者:Lingyun Shen、Qingshu Zheng、Yaoqi Liu、Jiajie Wu、Zeye Lu、Tao Tu
DOI:10.1039/d1gc01513c
日期:——
Enhanced catalytic activity towards hydrogenation of levulinic acid to γ-valerolactone under 1 atm H2 was realized by spherical porous self-supported NHC-Ir catalysts.