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Preparation of Activated Carbon from Wastepaper

废纸制备活性炭

基本信息

批准号：
12660294
负责人：
OKAYAMA Takayuki
金额：
$ 2.18万
依托单位：
Tokyo University of Agriculture and Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12660294/
关键词：
waste Wastpaper Activated carbon Carbonization Porous carbon material Adsorption Specific surface area Phenol resin

项目摘要

Activated carbon was prepared from waste newspaper as a way to recycling other than the paper-making. The specific surface area of activated carbon prepared from waste newspaper was 838 m^2/g, the micropore volume was 0.368 ml/g, and the mesopore volume was 0.138 ml/g, which is about the same as commercially available activated carbon. In particular, as compared with reagent-activated carbon, the quantities of mesopores with a pore radius of 3-25 nm and macropores with pore radius of 25-250 nm were 8-14 times larger, respectively. Activated carbon prepared from waste newspaper has a well-developed porous structure, particularly in mesopore and macropore ranges. Moreover, the specific surface area of carbonized materials prepared from waste newspaper was also investigated. The specific surface area obtained, 418 m^2/g was highest for the sample carbonized at 800 ℃, which was equal to or greater than that of commercially available charcoal. The iodine adsorption number of 581 mg/g was the highest and the rate of adsorption was fastest for the sample carbonized at 800 ℃. However, the humidity control capacity was highest for the material carbonized at 600-800 ℃. Carbonized panels were also prepared from waste phenol-formaldehyde resin and magazine wastepaper by gas phase activation. The modules of elasticity (MOE) was increased with carbonization for raw panels. However, the MOE and modules of rupture (MOR) were decreased with activation. The specific surface area of carbonized panel contain waste phenol resin was 650-760 m^2/g and it suggested that carbonized panels has a well-developed porous structure.

以废报纸为原料制备活性炭，作为造纸以外的一种资源化利用途径。由废报纸制备的活性炭的比表面积为838 m^2/g，微孔体积为0.368 ml/g，中孔体积为0.138 ml/g，这与市售活性炭大致相同。特别地，与试剂-活性炭相比，孔半径为3-25 nm的中孔和孔半径为25-250 nm的大孔的量分别大8-14倍。以废报纸为原料制备的活性炭具有发达的孔结构，尤其是中孔和大孔。此外，还研究了以废报纸为原料制备的可再生材料的比表面积。在800 ℃焙烧的样品比表面积最大，为418 m^2/g，等于或大于市售活性炭的比表面积。在800 ℃时，样品的碘吸附量最大，为581 mg/g，吸附速率最快。但在600-800 ℃范围内，材料的调湿能力最强。以废酚醛树脂和杂志废纸为原料，采用气相活化法制备了炭化板材。原板的弹性模量（莫伊）随炭化的进行而增大。然而，莫伊和断裂模量（莫尔）随着活化而降低。含废酚醛树脂的人造板的比表面积为650-760 m^2/g，表明人造板具有发达的多孔结构。