Screening heterogeneous catalysts for the pyrolysis of lignin |
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Affiliation: | 1. National Center for Agricultural Utilization Research, ARS, USDA, Peoria, IL 61604, United States;2. Eastern Regional Research Center, ARS, USDA, Wyndmoor, PA 19038, United States;1. National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206, China;2. Dept. of New Energy and Statistics, State Grid Energy Research Institute Co. LTD., Beijing 102209, China;1. Fushun Research Institute of Petroleum and Petrochemicals, SINOPEC, Fushun 113001, China;2. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, China;3. Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China;4. School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211800, China;1. Institute of Green Bio Science and Technology, Seoul National University, Pyeongchang 232-916, Republic of Korea;2. Department of Forest Sciences, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-921, Republic of Korea;3. R&D Institute, Moorim P&P Co. Ltd, Ulsan 689-892, Republic of Korea;4. Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang 232-916, Republic of Korea;1. School of Energy and Power Engineering, Beihang University, Beijing 102206, China;2. School of Space and Environment, Beihang University, Beijing 102206, China;3. School of Ecology and Environment, Zhengzhou University, Zhengzhou, Henan 450001, China;4. Center for High Pressure Science and Technology Advanced Research (HPSTAR), Beijing 100094, China |
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Abstract: | The pyrolytic conversion of pure lignin at 600 °C in flowing helium over five catalysts is described and compared to the control bed material, sand. Product distribution as char, liquid, and gas are described as well as the composition of the liquid and gas fractions. The catalysts examined were HZSM-5, KZSM-5, Al-MCM-41, solid phosphoric acid, and a hydrotreating catalyst, (Co/Mo/Al2O3). The sand yielded a liquid phase that was 97% oxygenated aromatics and a gas phase that was CO (18 vol%), CO2 (16 vol%), and CH4 (12 vol%). HZSM-5 was the best catalyst for producing a deoxygenated liquid fraction yielded almost equal amounts of simple aromatics (46.7%) and naphthalenic ring compounds (46.2%). The gas phase over this catalyst consisted of CO (22 vol%), CO2 (14 vol%), H2 (12 vol%), and CH4 (10 vol%). The Co/Mo/Al2O3 hydrotreating catalyst yielded a liquid consisting of 21% aromatics, 4% naphthalenics, and 75% oxygenated aromatics and a gas phase that was rich in hydrogen: H2 (18 vol%), CO2 (16 vol%), CO (12 vol%), and CH4 (8 vol%). |
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