Catalytic pyrolysis of mannose as a model compound of hemicellulose over zeolites |
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| Affiliation: | 1. College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China;2. Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China;3. Collaborative Innovation Center of Resource–Conserving & Environment-Friendly Society and Ecological Civilization, Changsha 410083, PR China;4. Institute of Biological and Environmental Engineering, Hunan Academy of Forestry, Changsha 410004, PR China;1. College of Chemistry and Materials Engineering, Zhejiang A & F University, Hangzhou, Zhejiang 311300, PR China;2. School of Humanities and Law, Zhejiang A & F University, Hangzhou, Zhejiang 311300, PR China;3. Zhejiang Jiuchuan Bamboo & Wood Co. Ltd, Lishui, Zhejiang 323800, China |
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| Abstract: | Mannose was selected as a model compound of hemicellulose and its thermal behavior over zeolites has been investigated using a TG-FTIR analyzer. There was an initial study of the chemical structure of mannose and a characterization of the catalysts. All three catalysts, HZSM-5, H-β and USY, had a significant influence on the dehydration, cracking and deoxygenation reactions during the pyrolysis of mannose. The dehydration reaction in the initial stage was enhanced, resulting in two separate water release processes, while the char formation was suppressed. USY had the best effect on dehydration, and HZSM-5 obtained the highest deoxygenation efficiency. The presence of HZSM-5 and H-β catalyzed the formation of water and CO2, while suppressing the formation of oxygenated compounds and char residues. |
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| Keywords: | Mannose Catalytic pyrolysis Zeolites TG-FTIR Kinetic analysis |
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