MATERIALS AND SUSTAINABLE DEVELOPMENT--GREEN MANUFACTURING AND PROCESSING OF MATERIALS |
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Synthesis of Activated Carbon from Kenaf Rod by Physico-chemical Coupling Activation and Its Characterization |
LIN Xing1, LIN Guanfeng2, HUANG Biao1
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1 College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108 2 College of Jinshan, Fujian Agriculture and Forestry University, Fuzhou 350002 |
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Abstract The activated carbon was prepared from kenaf rod by conventional chemical activation and physico-chemical coupling activation. The appropria-te preparation parameters of kenaf rod based activated carbon prepared by physico-chemical coupling activation were investigated by taking three factors including activation time, activation temperature and phosphoric acid concentration into consideration. The surface functional groups, morphology characteristics, specific surface area and pore structure characteristics of the prepared activated carbon were characterized by Fourier transform infrared spectrometer(FTIR), scanning electron microscopy(SEM), automatic specific surface area and pore size analyzer(ASAP). The results indicated that the optimum preparation conditions of kenaf rod based activated carbon were phosphoric acid mass concentration of 5%, activation time of 120 min, activation temperature of 850 ℃. Under this preparation conditions, the activated carbon prepared by physico-chemical coupling activation possessed well developed mesoporous structure and contained abundant functional groups like carbonyl group, hydroxyl group and carboxyl group. The iodine adsorption value, specific surface area and total pore volume of the prepared activated carbon were 1 148 mg/g, 1 636.94 m2/g and 0.95 cm3/g, which were about 1.4 times, 2 times and 2 times of that of the ones prepared by conventional chemical activation. Compared to single chemical activation process, physico-chemical coupling activation plays an important role in the formation, developing and regulation of activated carbon pore structure by taking the advantage of synergistic activation of phosphoric acid and water vapor.
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Published: 24 January 2019
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Fund:This work was financially supported by the Natural Science Foundation of China (31400510, 31770611), Fujian Special Fundation for Science and Technology (2014NZ0003), Youth Research Projects in Fujian Provincial Education Hall (JAT160684), Fujian University’s New Century Talents Support Program. |
About author:: Xing Lin received his B.S. Degree in material science and engineering from Fujian Agriculture and Forestry University in 2015. He is currently pursuing his M.S. Degree at Fujian Agriculture and Forestry University under the supervision of Prof. Biao Huang. His research has focused on biomass activated carbon material. 林星,男,硕士研究生。2015年6月毕业于福建农林大学,获得工学学士学位。同年9月,在本校材料工程学院攻读硕士学位,主要从事生物质炭材料的研究。
Biao Huang received his B.S. degree in chemical industry of forest product from Fujian College of Forestry in 1988 and received his Ph.D. degree in forestry engineering from Nanjing Forestry University in 2004. He is currently teaching at College of Material Engineering, Fujian Agriculture and Forestry University. He is an amiable professor who not only has made great achievements in his academic career, but also was strict with himself in life. His research interests include plant fiber chemistry and application, fine chemicals forest products and activated carbon material. |
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