在双催化剂固定床反应器中催化快速热解纤维素以提高低碳烯烃和芳烃的产量。
Enhancing the production of light olefins and aromatics from catalytic fast pyrolysis of cellulose in a dual-catalyst fixed bed reactor.
机构信息
State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Department of New Energy Science and Engineering, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 523000, China.
出版信息
Bioresour Technol. 2019 Feb;273:77-85. doi: 10.1016/j.biortech.2018.11.005. Epub 2018 Nov 3.
In this study, the effects of a macroporous catalyst (CaO), mesoporous catalyst (MCM-41), and microporous catalysts (ZSM-5 and SAPO-34) on the production of light olefins and aromatics from cellulose catalytic fast pyrolysis were investigated in a dual-catalyst fixed bed reactor. Further the fractional catalytic pyrolysis of MCM-41 or CaO with ZSM-5 or SAPO-34 was explored. The results showed that ZSM-5 was the most efficient catalyst for the formation of light olefins and aromatics followed by MCM-41, CaO and SAPO-34, and no aromatics were found with SAPO-34 only. Moreover, 15% CaO combined 85% ZSM-5 produced the highest yield of light olefins (5.59%) and aromatic (13.42%). The addition of CaO and MCM-41 promoted the selectivity of CH and decreased the production of naphthalene.
在这项研究中，在双催化剂固定床反应器中考察了大孔催化剂（CaO）、中孔催化剂（MCM-41）和微孔催化剂（ZSM-5 和 SAPO-34）对纤维素催化快速热解生产低碳烯烃和芳烃的影响。进一步探索了 MCM-41 或 CaO 与 ZSM-5 或 SAPO-34 的分级催化热解。结果表明，ZSM-5 是形成低碳烯烃和芳烃最有效的催化剂，其次是 MCM-41、CaO 和 SAPO-34，而 SAPO-34 则没有芳烃。此外，15%的 CaO 与 85%的 ZSM-5 结合可产生最高的低碳烯烃（5.59%）和芳烃（13.42%）收率。添加 CaO 和 MCM-41 可提高 CH 的选择性并降低萘的生成。
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