磁性颗粒负载磺酸功能化离子液体催化纤维素水解的研究

doi:10.3969/j.issn.1673-5854.2017.06.002

生物质化学工程 ›› 2017, Vol. 51 ›› Issue (6): 6-10.doi: 10.3969/j.issn.1673-5854.2017.06.002

磁性颗粒负载磺酸功能化离子液体催化纤维素水解的研究

杨艳平^1,2, 罗云龙², 沈明贵^1,2, 商士斌^1,2, 宋湛谦²

1. 中国林业科学研究院林业新技术研究所, 北京 100091;
2. 中国林业科学研究院林产化学工业研究所;生物质化学利用国家工程实验室;国家林业局林产化学工程重点开放性实验室;江苏省生物质能源与材料重点实验室, 江苏南京 210042

收稿日期:2016-10-28 出版日期:2017-11-30 发布日期:2017-12-08
通讯作者: 沈明贵,副研究员,从事生物质资源的研究与利用;E-mail:shenminggui@sina.com。 E-mail:shenminggui@sina.com
作者简介:杨艳平(1992-),女,山东济宁人,硕士生,研究方向为生物质化学与利用
基金资助:
中国林科院林业新技术所基本科研业务费专项资金（CAFINT2014C07）；江苏省自然科学基金青年基金项目（BK20150071）；江苏省生物质能源与材料重点实验室开放基金项目（JSBEM201402）

Ionic Liquid Modified Magnetic Nanoparticle:An Recyclable Magnetic Catalyst for Cellulose Hydrolysis

YANG Yanping^1,2, LUO Yunlong², SHEN Minggui^1,2, SHANG Shibin^1,2, SONG Zhanqian²

1. Research Institute of Forestry New Technology, CAF, Beijing 100091, China;
2. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab. for Biomass Chemical Utilization;Key and Open Lab. of Forest Chemical Engineering, SFA;Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China

Received:2016-10-28 Online:2017-11-30 Published:2017-12-08

摘要/Abstract

摘要： 采用化学修饰法将磺酸功能化离子液体[SO₃H-（CH₂）₃-HIM][HSO₄]负载在磁性纳米颗粒Fe₃O₄表面，制备了一种磁性颗粒负载磺酸催化剂Fe₃O₄@SiO₂-IL，并将Fe₃O₄@SiO₂-IL用于催化纤维素水解反应。采用FT-IR和TEM对催化剂进行了表征，并考察了反应温度、反应时间、催化剂用量和水用量对纤维素水解还原糖产率的影响。Fe₃O₄@SiO₂-IL样品在FT-IR光谱中的—SO₃H吸收峰和咪唑环的峰，说明离子液体被成功地负载到Fe₃O₄@SiO₂表面；TEM分析显示，Fe₃O₄磁核的颗粒大小约为250 nm，经过包裹和离子液体修饰的磁性颗粒表面并无明显变化。当纤维素用量为0.1 g，离子液体1-丁基-3-甲基咪唑氯盐（[Bmim]Cl）的用量为2.0 g，磁性催化剂用量为0.2 g，水用量为0.2 g，反应温度100 ℃，反应时间40 min时，纤维素水解还原糖产率可达52.5 %，并且磁性催化剂具有较好的磁性分离性能和重复使用性能，重复使用5次后，纤维素水解还原糖产率并无明显降低。

关键词: 纤维素, 磁性负载催化剂, 水解, 还原糖

Abstract: Dual Brønsted acidic ionic liquid 1-(propyl-3-sulfonate) imidazolium hydrogen sulfate[SO₃H-(CH₂)₃-HIM] [HSO₄] was supported onto the surface of Fe₃O₄@SiO₂to prepare recyclable magnetic catalyst Fe₃O₄@SiO₂-ILby chemical modification. The magnetic catalyst was characterized by FT-IR, TEM and further utilized in the hydrolysis of cellulose. The influences of reaction temperature, reaction time, catalyst dosage and water content on the convertion of cellulose to reduction sugars were investigated. The FT-IR of Fe₃O₄@SiO₂-IL showed absorption peaks of —SO₃H and that of imidazole ring, which indicated that the ionic liquid was successfully loaded on Fe₃O₄@SiO₂. The TEM images showed that the particles size of Fe₃O₄ was about 250 nm and the surface of particles had no significant change after packing and modification of ionic liquid. With the dosage of 0.1 g cellulose, 2.0 g ionic liquid [Bmim]Cl, 0.2 g magnetic catalyst, 0.2 g water and reacting under 100 ℃ for 40 min, the yield of the total reducing sugars reached 52.5 %. After magnetic separation, the catalyst could be reused for 5 recycles without the loss of catalytic activity.

Key words: cellulose, magnetic loaded catalyst, hydrolysis, reducing sugar

中图分类号:

TQ351

杨艳平, 罗云龙, 沈明贵, 商士斌, 宋湛谦. 磁性颗粒负载磺酸功能化离子液体催化纤维素水解的研究[J]. 生物质化学工程, 2017, 51(6): 6-10.

YANG Yanping, LUO Yunlong, SHEN Minggui, SHANG Shibin, SONG Zhanqian. Ionic Liquid Modified Magnetic Nanoparticle:An Recyclable Magnetic Catalyst for Cellulose Hydrolysis[J]. bce, 2017, 51(6): 6-10.

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磁性颗粒负载磺酸功能化离子液体催化纤维素水解的研究

Ionic Liquid Modified Magnetic Nanoparticle:An Recyclable Magnetic Catalyst for Cellulose Hydrolysis

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