科技导报

酸性阳离子交换树脂催化降解木质纤维素制备可还原糖

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科技导报 | 研究论文 2015,33(24): 23-27

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科技导报 | 研究论文 2015, 33(24): 23-27

酸性阳离子交换树脂催化降解木质纤维素制备可还原糖

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王景芸^1,2, 袁玉国², 付霓虹², 周明东², 臧树良^1,2

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臧树良(通信作者),教授,研究方向为生物质转化,电子信箱:slzang@lnu.edu.cn

Degradation of lignocellulose for preparing reducing sugar catalyzed by acidic cation exchange resin

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出版时间: 2015-12-28 doi: 10.3981/j.issn.1000-7857.2015.24.004

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为研究木质纤维素中不同组分的降解规律,以自制强酸性阳离子交换树脂为催化剂,对秸秆、蒸汽爆破预处理秸秆和微晶纤维素(MCC)进行降解处理研究。考查了催化剂用量、反应温度、反应时间等对秸秆降解反应的影响,比较了纤维素和半纤维素降解效果。研究结果表明,在微波加热条件下,以离子液体[Amim]Cl 为溶剂时,当催化剂与木质纤维素质量比为1∶1、反应温度为140~160℃、反应时间为20~40 min 时,总还原糖收率最高可达92%且半纤维素较纤维素易于降解,在140℃反应30 min,木糖收率最高为47.3%,在160℃反应40 min,葡萄糖收率最高可达45.8%。比较木屑、蒸汽爆破预处理的木屑和微晶纤维素催化降解情况,结果表明,酸性阳离子交换树脂对它们均具有有效的催化效果,其中微晶纤维素降解效果最好。

关键词

阳离子交换树脂 / 木质纤维素 / 可还原糖 / 葡萄糖 / 木糖

Abstract

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In order to learn the degradation pattern of different components of lignocellulose, we used self-made acidic cation exchange resins to catalyze the hydrolysis of straw, straw pretreated with steam-explosion and microcrystalline cellulose in this study. The effects of catalyst dosage, reaction temperature and time on the degradation of straw were studied in detail, and the results of cellulose and hemicellulose hydrolysis were compared. The results indicated that using resin as the catalyst and ionic liquid [Amim]Cl as the solvent, the straw can be converted with the highest TRS yield of 92% under the conditions of m_{lignocellulose}:m_cat=1, and reaction temperature between 140 and 160℃ under microwave-assisted heating for 20-40 min. Hemicellulose is more susceptible to degradation compared with cellulose. The xylose yield was 47.3% when the reaction was heated at 140℃ for 30 min and the glucose yield was 45.8% when the reaction was heated at 160℃ for 40 min. The degradations of different lignocellulose were investigated. The results indicated that the acidic cation exchange resin is an efficient catalyst for the degradation of lignocellulose and the result of microcrystalline cellulose degradation is the best.

Key words

cation exchange resin / lignocellulose / reducing sugar / glucose / xylose

引用本文

王景芸, 袁玉国, 付霓虹, 周明东, 臧树良. 酸性阳离子交换树脂催化降解木质纤维素制备可还原糖. 科技导报, 2015 , 33 (24) : 23 -27 . DOI: 10.3981/j.issn.1000-7857.2015.24.004

WANG Jingyun, YUAN Yuguo, FU Nihong, ZHOU Mingdong, ZANG Shuliang. Degradation of lignocellulose for preparing reducing sugar catalyzed by acidic cation exchange resin[J]. Science & Technology Review, 2015 , 33 (24) : 23 -27 . DOI: 10.3981/j.issn.1000-7857.2015.24.004

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2015年第33卷第24期

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doi: 10.3981/j.issn.1000-7857.2015.24.004

接收时间：2015-03-05
首发时间：2016-01-07
出版时间：2015-12-28

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收稿日期：2015-03-05
修回日期：2015-09-06

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通讯作者:

臧树良(通信作者),教授,研究方向为生物质转化,电子信箱:slzang@lnu.edu.cn

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https://castjournals.cast.org.cn/joweb/kjdb/CN/10.3981/j.issn.1000-7857.2015.24.004

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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