Mixed-Ligand Ni(Ⅱ), Co(Ⅱ) and Fe(Ⅱ) Complexes as Catalysts for Esterification of Biomass-Derived Levulinic Acid with Polyol and in Situ Reduction via Hydrogenation with NaBH_(4)
作者机构：Nanotechnology&Catalysis Research Centre(NanoCat)Level 3Block AInstitute of Postgraduate StudiesUniversity of MalayaKuala Lumpur 50603Malaysia Department of ChemistryRajshahi University of Engineering&TechnologyRajshahi 6204Bangladesh
出 版 物：《Journal of Renewable Materials》 (可再生材料杂志（英文）)
年 卷 期：2019年第7卷第8期
页 面：731-748页
学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学]
基 金：financial support from Universiti Malaya(Grand Challenge(Innovative Technology(ITRC)(GC001B-14AET)),RU Geran(ST012-2018) Postgraduate(Research Grant(PPP,Project number:PG250-2016A))
主 题：Biomass esterification-hydrogenation mixed-ligand complex NaBH_(4) reduction
摘 要：Synthesizing polyol-based ester from biomass feedstocks for the preparation of biolubricant overcomes the dependence on petroleum oil *** biomass-derived bio-oil is an alternative for the production of polyol ester,upgrading is essential prior to use as *** acid(LA),obtained from bio-oil was applied for the catalytic esterification with two polyols,e.g.,trimethylolpropane(TMP)and pentaerythritol(PE),in the presence of mixed-ligand Ni(Ⅱ),Co(Ⅱ),and Fe(Ⅱ)complexes as *** mixed-ligand coordination complexes with empirical formula;[Ni(Phe)(Bpy)Cl].H2O,[Co(Phe)(Bpy)Cl].H2O,and[Fe(Phe)(Tyr)Cl].H2O were synthesized by the reaction of ligands[L-phenylalanine(Phe),4,4 -bipyridine(Bpy),and L-tyrosine(Tyr)]with metal chloride salts and characterized by elemental analysis,magnetic susceptibility,FTIR,TGA/DTA,powder-XRD,and SEM *** study aims to investigate the catalytic activities of the complexes via esterification reaction of levulinic acid with trimethylolpropane and *** addition,these catalysts were further employed for the in situ hydrogenation of levulinate esters via NaBH_(4) at room temperature upon ***,the iron(Ⅱ)complex was more potential,exhibiting its efficiency as a homogeneous catalyst for esterification-hydrogenation reaction for synthesizing ester-based oils.
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