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Chemistry and Industry of Forest Products ›› 2014, Vol. 34 ›› Issue (1): 113-116.doi: 10.3969/j.issn.0253-2417.2014.01.019

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Preparation of Granular Activated Carbon from China Fir with Super-high Surface Area by Catalysis Activation

ZHU Guang-zhen, DENG Xian-lun, GUO Hao, ZHANG Yan-ping   

  1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab.for Biomass Chemical Utilization; Key and Open Lab.of Forest Chemical Engineering, SFA; Key Lab.of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
  • Received:2013-01-14 Online:2014-02-25 Published:2014-03-05

Abstract: Super-high specific surface area granular activated carbon (GAC) from China fir sawdust was prepared through adding concentrated sulfuric acid in the traditional technology by phosphoric acid activation method. Influences of different dosage of concentrated sulfuric acid, impregnation time and impregnation ratio on specific surface area was studied. The results showed that both of the dosage of concentrated sulfuric acid and impregnation time had great influence on specific surface area of GAC by phosphoric acid method. The GACs prepared under the conditions of impregnation time 15 h, dosage of concentrated sulfuric acid 6 %, impregnation ratio 2.1:1 and impregnation time 5h, dosage of concentrated sulfuric acid 3 %, impregnation ratio 2.1:1 gave the BET surface area of 2 825 and 2 811 m2/g, the total pore volume of 1.60 and 1.59 cm3/g, and butane working capacity (BWC) of 154.8 and 157.3 g/L, respectively.

Key words: phosphoric acid, sulfuric acid, China fir, granular activated carbon, butane working capacity

CLC Number: