Optimization of Activated Carbons Prepared from <i>Parinari macrophylla</i>Shells

作     者：Maâzou Siragi D. B. Didier Desmecht Halidou I. Hima Ousmaila Sanda Mamane Ibrahim Natatou Maâzou Siragi D. B.;Didier Desmecht;Halidou I. Hima;Ousmaila Sanda Mamane;Ibrahim Natatou

作者机构：Materials Water and Environment Laboratory Sciences and Technologies Faculty Abdou Moumouni University Niamey Niger LABIRIS Physical Chemistry and Catalysis Brussels Belgium Sciences and Technologies Faculty Agadez University Agadez Niger 

出 版 物：《Materials Sciences and Applications》 (材料科学与应用期刊（英文）)

年 卷 期：2021年第12卷第5期

页      面：207-222页

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

主　　题：Biomass Parinari macrophylla Pyrolysis Optimization Active Carbon 

摘      要：Plant matter constitutes an important source for producing carbonaceous materials. This work deals with the preparation of active carbons from shells of Parinari macrophylla (agricultural waste in Niger). Physical, chemical and mixed activations are considered. Several parameters of preparation are optimized, as the nature of the activation gas (N2 or CO2, dry and wet), the concentration of the activating agent (H3PO4), the time of impregnation and the pyrolysis temperature program. The active carbons are characterized through their iodine numbers, their specific surface areas and their porous volumes. Active carbons, produced from shells of Parinari macrophylla display iodine numbers up to 599 mg I2/g and specific surface areas up to 727 m2/g. They also show microporous characteristics, with a mean pore diameter, usually, lower than 20 Å and a microporous surface percentage up to 88.7% and a microporous volume percentage up to 82.1%. The microporosity is far more developed for the active carbons produced by chemical activation.