G0900-1-1 籾殻由来活性炭の細孔構造に及ぼすシリカ除去の効果(環境工学部門一般講演(1):資源循環・温暖化対策技術,社会変革を技術で廻す機械工学)

概要

論文の詳細を見る
Activated carbons were fabricated by heating the extrusion-molded precursor made from carbonized rice husk (RH) and sugar-based binder at 850℃ in CO_2 and then by removing the silica component therein by means of NaOH extraction. Textural properties of the RH-based activated carbons (RHACs) were evaluated by nitrogen adsorption isotherm at -196℃. The specific surface area and the pore volume of RHACs were enhanced by increasing the removal rate of the silica component, which were accomplished by changing the concentration of NaOH solution, the immersion temperature, and the immersion time. A highly textured structure (micropore volume: 0.44 cm^3/g, mesopore volume: 0.35 cm^3/g, BET specific surface area: 1294 m^2/g) was observed on the RHAC in which almost silica component was removed by immersion in NaOH solution at the elevated temperature (80℃).
2010-09-04