Abstract：Walnut peel as raw material, zinc chloride was used as activating agent for preparation walnut peel activated carbon in the muffle furnace in this experiment, using orthogonal design. Yield，the specific surface area and iodine number of walnut peel activated carbon were determined at all designed experimental conditions and the optimum technological condition of preparation was obtained. By analysis of aperture, infrared spectra and the content of acidic group in surface with Boehm, walnut peel activated carbon of prepared at the optimum condition was characterized. The results showed the optimum technological parameters of preparation: activation temperature (600 ℃), activation time (1h), the concentration of zinc chloride (50%), the particle size( 60 mesh). The specific surface area of walnut peel activated carbon obtained at optimum condition was mounting to 1 258.05 m2·g-1 , the ratio of medium porous 32.18%. Therefore, walnut peel can be used in the preparation of the high-quality activated carbon of large surface area. Agricultural wastes, as walnut peel, not only were implemented recycle, but also didn’t make any pollution. Meanwhile, a cheap adsorbent was provided and it was of great significance to open a new source of activated carbon.
Key words：Walnut peel;Activated carbon;Zinc chloride;Activation;Optimum process
刘晓红*，王省伟，赵 博，吕俊芳，康妮娜，张耀军. 核桃果皮基活性炭的氯化锌活化制备及工艺优化[J]. 光谱学与光谱分析, 2014, 34(12): 3350-3353.
LIU Xiao-hong*, WANG Xing-wei, ZHAO Bo, Lü Jun-fang, KANG Ni-na, ZHANG Yao-jun. Preparation and Optimum Process of Walnut Peel Activated Carbon by Zinc Chloride as Activating Agent. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(12): 3350-3353.
[1] XIA Hong-ying, PENG Jin-hui, ZHANG Li-bo, et al(夏洪应, 彭金辉, 张利波, 等). Ion Exchange and Adsorption(离子交换与吸附), 2007, 23(2): 112. [2] CHEN Feng-ting, ZENG Han-min(陈凤婷, 增汉民). Ion Exchange and Adsorption(离子交换与吸附)，2004, 20(2): 104. [3] Xia J, Kagawa S, Wakao N, et al. J. Chem. Eng. Jan.，1998, 31(66): 987. [4] Sun Y, Webley P A. Industrial & Engineering Chemistry Research, 2011, 50 (15): 9286. [5] State Bureau of Quality and Technical Supervision(国家质量技术监督局). GB/T12496.8—1999. Test Method for the Determination of Wooden Activated Carbon Iodine Adsorption Value(GB/T12496.8—1999. 木质活性炭试验方法碘吸附值的测定). Beijing: Standards Press of China(北京: 中国标准出版社)，1999. [6] ZHANG Xiao, GUO Shu-cai, DENG Yi-zhao(张 晓, 郭树才, 邓贻钊). Materials Science and Engineering(材料科学与工程), 1966, 14(4): 34.
