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首页> 外文会议>International Conference on "Multidimensional Role of Basic Science in Advanced Technology" >Thermocatalytic Degradation of Industrial Waste lignin to Prepare Activated Carbon
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Thermocatalytic Degradation of Industrial Waste lignin to Prepare Activated Carbon

机译：工业废物木质素的热催化降解制备活性炭

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Activated carbons were prepared from industrial waste lignin by thermocatalytic degradation using various activating agents. The degradation was carried out in presence of chemical activating reagents such as ZnCl_2, K_2CO_3, Na_2CO_3, KOH and NaOH. All the degradations were carried out at the temperature 500°C and the impregnation ratio of lignin and activating reagent was maintained as 1:1. The maximum yield of activated carbon was obtained with ZnCl_2 activation which is 58% of the lignin charged. The proximate and elemental analysis of all the activated carbons showed high carbon content of activated carbon as compared to lignin. The comparative study of FTIR showed almost flattening of maximum peaks in activated carbon. The SEM analysis reveals that the lignin particles has been softened, melted and diffused into the mass of matrix with number of pores on its surface after thermal degradation. The maximum BET surface area 819.82 m~2/g was achieved by the activated carbon prepared by ZnCl_2 activation which is comparable to commercially available activated carbon. ZnCl_2 works as effective dehydration reagent and restricted the formation of tar and promoted the charring and aromatization of carbon upto carbonization temperature 500°C.
机译：通过使用各种活化剂的热催化降解，从工业废木质素中制备活性炭。在化学活化试剂如ZnCl_2，K_2CO_3，NA_2CO_3，KOH和NaOH存在下进行降解。在500℃的温度下进行所有降解，木质素和活化试剂的浸渍比保持为1：1。用ZnCl_2活化获得活性炭的最大收率，其为58％的木质素。与木质素相比，所有活性碳的近似和元素分析显示出活性炭的高碳含量。 FTIR的比较研究表明活性炭中最大峰的几乎变平。 SEM分析显示，在热降解后，木质素颗粒已被软化，熔化和扩散成具有孔数的基质的质量。通过通过ZnCl_2活化制备的活性炭实现的最大BET表面积819.82m〜2 / g，其与市售的活性炭相当。 ZnCl_2用作有效的脱水试剂，并限制焦油的形成，并促进碳化温度500℃的碳膨胀和芳香化。

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