摘要
以文冠果皮为原料，磷酸为活化剂，经一步法制得活性炭。分析了制备条件对活性炭吸附性能的影响，测定了文冠果皮活性炭的微孔结构，孔径分布和甘油粗品脱色脱臭效果。结果表明，文冠果皮在浸渍比1.5：1（质量比），活化温度600℃，活化时间60min的工艺条件下，制得活性炭的亚甲基蓝吸附值210mg／g，碘吸附值951mg／g，孔径分布集中于2-8nm，适合作为液相大分子脱色应用。添加甘油粗品质量1．5％的文冠果皮活性炭，90℃下恒温脱色可获得无色无臭的精制甘油，透光率为98．5％。
Activated carbon （AC） was prepared from Xanthoceras sorbifolia Bunge（ XSB ） hull with phosphoric acid by one-step activation. The effects of processing condition on adsorption capacity of the derived activated carbons were investigated. Microporous structure, pore size distribution and glycerin decolorization effect of the optimal sample were also analyzed. The results show that activated carbon from XSB hull can be prepared at the impregnated ratio 1.5 ： 1, temperature 600 ℃, time 60 min. The prepared XSB-hull activated carbon has the characters of methylene blue value 210 mg/g, iodine value 951 mg/g and pore size distribution within 2-8 nm. As an important by-product of bio-diesel, crude glycerin has some yellow color and peculiar smell which can be cleaned by adding this activated carbon of 1.5 % weight of glycerin mass in 90 ℃ water bath to obtain an odorless, colourless refined glycerin with light transmittance of 98.5 %.
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
2009年第B10期77-81,共5页
Chemistry and Industry of Forest Products
基金
"十一五"国家科技支撑计划资助(2006BAD19B06)
中央级公益性科研院所基本科研业务费专项资金资助(CAFINT2007C16)
关键词
文冠果
生物柴油
活性炭
甘油
脱色
Xanthoceras sorbifolia Bunge
bio-diesel
activated carbon
glycerin
decolorization
