林业工程学报2017，Vol.2Issue(2)：95-100,6.DOI:10.13360/j.issn.2096-1359.2017.02.016
萃取-酯交换耦合法制备生物柴油过程催化剂应用研究进展
Recent development in application of catalyst to biodiesel production by coupling extraction and transesterification
摘要
Abstract
The production of biodiesel traditionally involves multiple stages, including oil extraction, purification and subsequent esterification or transesterification etc., which costs large quantities of energy and chemicals. The in-situ extraction and esterification/transesterification, also known as reactive extraction, is a simple but effective biodiesel production method developed in recent years and is considered to have big application potential. In the reactive extrac-tion process, extraction and esterification/transesterification occur simultaneously with some short-chain alcohols like methanol adopted as extraction solvent and transesterification reagent, and the solid oil-bearing material contacts with alcohol directly instead of reacting with pre-extracted oil and is directly converted into biodiesel. Thus this process can greatly improve the production efficiency, and reduce cost and environmental impact. The selection of catalyst in the reactive extraction is the key factor to obtain high conversion efficiency. There are various catalysts used in transesteri-fication, but most of them are used to catalyze the processed liquid oil rather than reactive extraction. In this paper, the catalytic methods of reactive extraction in biodiesel production including acid catalysis, alkali catalysis, ionic liquid catalysis, supercritical technology and enzyme catalysis are reviewed, and their advantages and disadvantages are discussed. In reactive extraction, acidic catalyst is more favorable than alkali catalyst because the free fatty acid of oil feedstock prohibits the use of alkali catalyst and leads to problems such as soap formation and difficulty in product separation. However, the use of homogeneous acidic catalyst requires neutralization and separation from the reaction mixture and leads to environmental problems relating to the use of solvents and energy. By contrast, the reactive ex-traction by using solid catalysts has lower operational costs and is more environmentally compatible. Moreover, the main existing problems and development trends in the preparation and application of catalyst for the preparation of biodiesel by coupling extraction and transesterification are introduced.关键词
生物柴油/酯交换/原位萃取/固体原料Key words
biodiesel/transesterification/in-situ extraction/solid material分类
化学化工引用本文复制引用
武海棠,许康力,杨芳霞,张军华..萃取-酯交换耦合法制备生物柴油过程催化剂应用研究进展[J].林业工程学报,2017,2(2):95-100,6.基金项目
陕西省自然科学基础研究计划项目(2015JQ3067) （2015JQ3067）
西北农林科技大学林学院优秀青年教师人才培育计划项目 （）
陕西省科学技术研究发展计划项目(2014K02-12-03) （2014K02-12-03）
中央高校基本科研业务费资助项目(2452015337). （2452015337）
