化工进展2017，Vol.36Issue(5)：1811-1817,7.DOI:10.16085/j.issn.1000-6613.2017.05.031
水稻秸秆水热处理-酯交换改性制备吸油材料
Hydrothermal treatment and transesterification modification of rice straw for oil spill absorption material
王磊 1刘昌见1
作者信息
- 1. 中国石油大学(北京)化学工程学院,北京 102249
- 折叠
摘要
Abstract
A biomaterial for oil spill adsorption was developed using hydrothermal treatment and transesterification modification of rice straw. Rice straw was pretreated by hydrothermal process to improve the fiber structure. Using vinyl acetate as esterification agent,N,N-dimethylformamide as solvent,and anhydrous potassium carbonate as catalyst for transesterification modification,the hydrophobic of the modified material was greatly improved. The process conditions of transesterification modification of hydrothermal treated rice straw were investigated. The optimum technological conditions were as follows: temperature 90℃,catalyst concentration 1.5g/mL,volume fraction of esterifying agent 20%,and reaction time 6h. The oil-absorption capacity and water-absorption capacity of the modified rice straw were 9.71g/g and 0.51g/g,respectively. Furthermore,the rice straw before and after modification were characterized by BET,XRD,and FTIR. The hydrothermally pretreated rice straw had larger pore diameters. The decrease of crystallinity and appearance of acetyl group of characteristic peak after transesterification showed the feasibility of transesterification modification of rice straw.关键词
水稻秸秆/水热/酯交换改性/制备/吸附剂Key words
rice straw/hydrothermal/transesterification modification/preparation/sorbents分类
化学化工引用本文复制引用
王磊,刘昌见..水稻秸秆水热处理-酯交换改性制备吸油材料[J].化工进展,2017,36(5):1811-1817,7.
