Orange (Citrus aurantium) peel was investigated for producing microporous nano activated carbons (OPAC). One-step chemical activation process by zinc chloride as an activating agent and a carbonization temperatures ranging from 500 to 900 °C was used to produce OPAC having high surface area of type I. The effects of carbonization temperature, impregnation ratio, and impregnation time on the properties of the OPAC were studied. The prepared activated carbons were characterized by FTIR; Brunauer–Emmett–Teller (BET); TGA; TEM, SEM, and EDAX analyses; the point of zero charge; and Boehm titration method. The maximal surface area of OPAC was activated by using the impregnation (orange peel/ZnCl₂) ratio of 2:1, 700 °C carbonization temperature, and a 30-min holding time. The BET surface area, the total pore volume, and the micropore volume were 1228.2 m²/g, 0.5516, and 0.5482 cm³/g, respectively. The total pore volume increased with the increase of the activation temperature. The minimum pore diameter was 0.7 nm and the mean pore diameter was 1.797 nm. The results proved that the ZnCl₂ chemical activation is a useful technique to prepare high surface area activated carbon from Citrus aurantium peels with nano pore size structure.

研究了桔皮（Citrus aurantium）用于生产微孔纳米活性炭（OPAC）。采用氯化锌作为活化剂的一步化学活化工艺，其碳化温度范围为500至900°C，以生产具有高表面积I型的OPAC。碳化温度，浸渍比和浸渍时间对IPAC的影响研究了OPAC的性质。FTIR对制备的活性炭进行了表征。布鲁诺尔-埃米特-泰勒（BET）; TGA；TEM，SEM和EDAX分析；零电荷点；和Boehm滴定法。通过浸渍（橙色果皮/ ZnCl ₂）激活OPAC的最大表面积）的比例为2：1，碳化温度为700°C，保温时间为30分钟。BET表面积，总孔体积和微孔体积分别为1228.2m ² /g、0.5516和0.5482cm ³ / g。总孔体积随着活化温度的升高而增加。最小孔径为0.7nm，平均孔径为1.797nm。结果表明，ZnCl ₂化学活化是从具有纳米孔径结构的柑桔皮中制备高表面积活性炭的有用技术。