Comparative study of fast pyrolysis, hydropyrolysis and catalytic hydropyrolysis of poplar sawdust and rice husk in a modified Py-GC/MS microreactor system: Insights into product distribution, quantum description and reaction mechanism
Comparative study of fast pyrolysis, hydropyrolysis and catalytic hydropyrolysis of poplar sawdust and rice husk in a modified Py-GC/MS microreactor system: Insights into product distribution, quantum description and reaction mechanism
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改进的 Py-GC/MS 微反应器系统中杨木锯末和稻壳的快速热解、加氢热解和催化加氢热解的比较研究：深入了解产物分布、量子描述和反应机理
DOI：
10.1016/j.rser.2019.109604
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发表时间：
2020-03
影响因子：
15.9
通讯作者：
Liu Xinghua
中科院分区：
文献类型：
--
作者：
He Yifeng;Zhao Yingnan;Chai Meiyun;Zhou Zhongyue;Sarker Manobendro;Li Chong;Liu Ronghou;Cai Junmeng;Liu Xinghua
快速热裂解、加氢热裂解和催化加氢热裂解是生物质制取生物油的三种重要方法，一直受到研究者的关注。本研究采用改进的Py-GC/MS微反系统，对白杨木屑和稻壳的热解、加氢热解和催化加氢热解进行了综合研究。制备了Rh/ZrO 2（0.5wt%）催化剂，并将其应用于催化加氢裂解过程。建立了包括产物选择性估算方法、O/C和H/C比计算方法、脱氧程度（DE）和氢损失程度（HLE）在内的脱氧效果评价体系。Rh/ZrO 2辅助催化加氢热解表现出良好的脱氧效果，其O/C比（分别为0.10的白杨木屑和0.11的稻壳）与文献报道的加氢脱氧改质生物油（HDO）相当。以白杨木屑为原料，在催化加氢热解过程中，烃类选择性最高，为49.14%，DE值最高，为87.6%。对于稻壳，加氢热解过程获得了与催化HyPy（83.7%）相似的DE（82.7%），因为具有高灰分含量（19.4wt%）的稻壳含有大量的可能形成自催化效应的矿物元素。根据产物分布和含氧产物的量子计算进一步推断了反应机理，表明Rh/ZrO 2辅助加氢热解是通过原料生物质的初始热解和热解中间体的进一步脱氧的多阶段反应完成的。此外，本研究还为生物质催化加氢热解的进一步研究提供了方法和理论支持。
Fast pyrolysis, hydropyrolysis and catalytic hydropyrolysis are three important methods to produce bio-oil from biomass and are of great interest to researchers. In this research, the comprehensive study of pyrolysis, hydropyrolysis and catalytic hydropyrolysis of poplar sawdust and rice husk was investigated in a modified laboratory Py-GC/MS microreactor system. Rh/ZrO2(0.5 wt %) was prepared and applied in the catalytic hydropyrolysis process. An evaluation system including estimating method of product selectivity, the calculation method of O/C and H/C ratio, deoxygenation extent (DE) and hydrogen-loss extent (HLE), was established to fully measure the deoxygenation effect. The Rh/ZrO2-assisted catalytic hydropyrolysis showed a good deoxygenation effect as O/C ratios (0.10 for poplar sawdust, 0.11 for rice husk, respectively) are comparable to that of the reported upgraded bio-oil by hydrodeoxygenation (HDO). The highest hydrocarbon selectivity of 49.14% and DE of 87.6% were obtained in catalytic hydropyrolysis of poplar sawdust. For rice husk, the hydropyrolysis process gained a similar DE (82.7%) to that of the catalytic HyPy (83.7%), because rice husk with high ash content (19.4 wt %) contains a large number of mineral elements that are likely to form a self-catalysis effect. The reaction mechanism was further inferred according to product distribution and quantum calculation of oxygen-containing products, suggesting that Rh/ZrO2-assisted hydropyrolysis was accomplished by multistage reactions, involving initial pyrolysis of raw biomass and further deoxygenation of the pyrolysis intermediates. Moreover, this work can also provide a proven methodology and theoretical supports for future studies on catalytic hydropyrolysis of biomass.
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影响因子：
9.8
作者：
Liang Zhang;Kening Gong;Jinfeng Lai;Paul M. Alvey
通讯作者：
Liang Zhang;Kening Gong;Jinfeng Lai;Paul M. Alvey
影响因子：
4.2
作者：
J. Wildschut;F. Mahfud;R. Venderbosch;H. J. Heeres
通讯作者：
J. Wildschut;F. Mahfud;R. Venderbosch;H. J. Heeres
DOI：
10.1016/0144-4565(84)90039-8
发表时间：
1984
期刊：
Biomass
影响因子：
--
作者：
P. Lejemble;A. Gaset;P. Kalck
通讯作者：
P. Lejemble;A. Gaset;P. Kalck
影响因子：
11.4
作者：
Xinghua Zhang;Qi Zhang;Tiejun Wang;Longlong Ma;Yuxiao Yu;Lungang Chen
通讯作者：
Xinghua Zhang;Qi Zhang;Tiejun Wang;Longlong Ma;Yuxiao Yu;Lungang Chen
纤维素和纤维素衍生的碳水化合物催化转化为有机酸
影响因子：
5.3
作者：
Deng, Weiping;Zhang, Qinghong;Wang, Ye
通讯作者：
Wang, Ye