金属氧化物催化热解微晶纤维素

doi:10.16085/j.issn.1000-6613.2017-1419

化工进展 ›› 2018, Vol. 37 ›› Issue (05): 1837-1842.DOI: 10.16085/j.issn.1000-6613.2017-1419

金属氧化物催化热解微晶纤维素

邹群, 戴贡鑫, 林海周, 王树荣

浙江大学能源清洁利用国家重点实验室, 浙江杭州 310027

收稿日期:2017-07-10 修回日期:2017-10-28 出版日期:2018-05-05 发布日期:2018-05-05
通讯作者: 王树荣,教授,博士生导师。
作者简介:邹群(1993-),男,硕士研究生,从事生物质催化热解制取高品位液体燃料研究。E-mail:21527039@zju.edu.cn。
基金资助:
国家自然科学基金项目（51476142）。

Catalytic pyrolysis of microcrystalline cellulose with metal oxides

ZOU Qun, DAI Gongxin, LIN Haizhou, WANG Shurong

State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, Zhejiang, China

Received:2017-07-10 Revised:2017-10-28 Online:2018-05-05 Published:2018-05-05

摘要/Abstract

摘要： 详细研究了不同种金属氧化物（Al₂O₃、MgO和Ga₂O₃）对纤维素热解行为的影响。通过热重-红外光谱研究了添加不同金属氧化物后纤维素热解行为的变化，发现金属氧化物的加入使得微晶纤维素的最大失重速率降低，开始分解的温度前移，焦炭产率增加。在3种金属氧化物中，Al₂O₃有最为优秀的综合脱氧效果，而Ga₂O₃使得发生脱氧反应的温度区间变窄，但是脱除效率相对不高。通过热解-气相色谱/质谱分析了添加不同金属氧化物后纤维素热解产物分布的变化，结果表明，Al₂O₃对于呋喃类产物有很好的选择性，MgO促进了小分子产物的生成，Ga₂O₃提高了脱水糖产物的总产率。此外，Ga₂O₃的添加对于Al₂O₃和MgO的催化效果影响不同。

关键词: 生物质, 催化, 热解, 金属氧化物, 热重-红外光谱, 热解-气相色谱/质谱

Abstract: The effect of different metal oxides (Al₂O₃,MgO and Ga₂O₃)on the pyrolysis behavior of cellulose was investigated in detail. The change of the cellulose pyrolysis behavior before and after the addition of different metal oxides was investigated by TG-FTIR. It is found that the maximum weight loss rate of microcrystalline cellulose decreases with the addition of metal oxide, while the initial decomposition temperature and the coke yield increase. Of the three metal oxides, Al₂O₃ has the best deoxidation efficiency. Ga₂O₃ can make the temperature range of cellulose pyrolysis narrower, but the deoxidation efficiency is not high. The product distribution of cellulose pyrolysis after adding different metal oxides was analyzed by Py-GC/MS. The results show that Al₂O₃ has good selectivity for furan products, MgO promotes the formation of small molecular products, and Ga₂O₃ improves the total yield of anhydro sugar products. In addition,the addition of Ga₂O₃ has a different catalytic effect with Al₂O₃ and MgO.

Key words: biomass, catalytic, pyrolysis, metallic oxide, TG-FTIR, Py-GC/MS

中图分类号:

邹群, 戴贡鑫, 林海周, 王树荣. 金属氧化物催化热解微晶纤维素[J]. 化工进展, 2018, 37(05): 1837-1842.

ZOU Qun, DAI Gongxin, LIN Haizhou, WANG Shurong. Catalytic pyrolysis of microcrystalline cellulose with metal oxides[J]. Chemical Industry and Engineering Progress, 2018, 37(05): 1837-1842.

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金属氧化物催化热解微晶纤维素

Catalytic pyrolysis of microcrystalline cellulose with metal oxides

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