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Synergy in the Selective Production of Ketone Platform Compounds from Biomass Pyrolysis Vapors over CeO2 Catalysts
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-03-24 , DOI: 10.1021/acs.iecr.9b06454 Shanshan Shao 1, 2 , Xianliang Xiang 1 , Xiaohua Li 1 , Huiyan Zhang 2 , Rui Xiao 2 , Yixi Cai 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-03-24 , DOI: 10.1021/acs.iecr.9b06454 Shanshan Shao 1, 2 , Xianliang Xiang 1 , Xiaohua Li 1 , Huiyan Zhang 2 , Rui Xiao 2 , Yixi Cai 1
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Acetic acid, n-butyraldehyde, furfural, n-butanol, and ethyl acetate as model compounds of biomass pyrolysis vapors were selected as reactants for ketonization over CeO2. Catalytic conversion of single components was conducted to understand their ketonization characteristics and also to obtain the overlapped temperature range. The results showed that the yield of acetone from directional ketonization of acetic acid reached a maximum of 97.4% at 360 °C over CeO2 with numerous oxygen vacancies, while n-butyraldehyde, n-butanol, and ethyl acetate performed the best at 420 °C with limited yield of ketones of 47.2, 35.1, and 85.4%, respectively. At the overlapped 420 °C, owing to the dehydration of acetic acid molecules, the ketonization of n-butyraldehyde was promoted with the largest overall yield of ketones of 96.5%. A mixture of furfural/acetic acid (1:4) brought about a lower yield of ketones of 78.8%, indicating a negative synergism due to active sites occupation by furfural adsorption.
中文翻译：
CeO 2催化剂上生物质热解蒸气选择性生产酮平台化合物的协同作用
选择乙酸，正丁醛，糠醛，正丁醇和乙酸乙酯作为生物质热解蒸气的模型化合物，作为在CeO 2上进行酮化的反应物。进行单组分的催化转化以了解其酮化特性并获得重叠的温度范围。结果表明，由乙酸的定向酮化丙酮的产率最大为97.4％在360℃下在CeO达到2与众多的氧空位，而Ñ丁醛，Ñ-丁醇和乙酸乙酯在420°C时表现最佳，酮的收率分别有限，分别为47.2％，35.1％和85.4％。在重叠的420°C下，由于乙酸分子的脱水，促进了正丁醛的酮化，酮的最大总收率为96.5％。糠醛/乙酸（1：4）的混合物产生的酮的产率较低，为78.8％，这表明由于糠醛吸附占据的活性位点，产生了负协同作用。
更新日期：2020-03-24
中文翻译：
CeO 2催化剂上生物质热解蒸气选择性生产酮平台化合物的协同作用
选择乙酸，正丁醛，糠醛，正丁醇和乙酸乙酯作为生物质热解蒸气的模型化合物，作为在CeO 2上进行酮化的反应物。进行单组分的催化转化以了解其酮化特性并获得重叠的温度范围。结果表明，由乙酸的定向酮化丙酮的产率最大为97.4％在360℃下在CeO达到2与众多的氧空位，而Ñ丁醛，Ñ-丁醇和乙酸乙酯在420°C时表现最佳，酮的收率分别有限，分别为47.2％，35.1％和85.4％。在重叠的420°C下，由于乙酸分子的脱水，促进了正丁醛的酮化，酮的最大总收率为96.5％。糠醛/乙酸（1：4）的混合物产生的酮的产率较低，为78.8％，这表明由于糠醛吸附占据的活性位点，产生了负协同作用。
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