title: Preparation of carbon black from rice husk by hydrolysis, carbonization and pyrolysis.
abstract: Carbon black is a form of amorphous carbon that is produced by incomplete combustion of petroleum- or some plant-derived materials and has a number of industrial uses. A process consisting of hydrolysis, carbonization and pyrolysis of rice husk was developed. Under optimal hydrolysis conditions (72 wt.% sulfuric acid, 50°C, 10 min), a hydrolysis ratio of 52.72% was achieved. After carbonization of the hydrolysis solution by water bath, the solid carbon was further pyrolyzed. As the pyrolysis temperature was increased from 400 to 800°C, the carbon content increased from 83.41% to 94.66%, the number of O-H, C-H, CO, and CC surface functional groups decreased, and based on Brunauer-Emmett-Teller (BET) results, the specific surface area and pore volume of carbon black increased from 389 to 1,034 m(2)/g and from 0.258 to 0.487 cm(3)/g, respectively. X-ray diffraction pattern (XRD) and Raman spectroscopy analyses of samples pyrolyzed at 400-800°C showed a localized graphitic structure. It is possible that the hydrolysis/carbonization/pyrolysis process developed in this study could also be applicable to the preparation of carbon black from other types of biomass.
authors: College of Chemistry, Jilin University, No. 2699, Qianjin Street, Changchun 130012, PR China.
authors: Lili
authors: L
authors: Wang
authors: Xiaofeng
authors: X
authors: Wang
authors: Bo
authors: B
authors: Zou
authors: Xiaoyu
authors: X
authors: Ma
authors: Yuning
authors: Y
authors: Qu
authors: Chunguang
authors: C
authors: Rong
authors: Ying
authors: Y
authors: Li
authors: Ying
authors: Y
authors: Su
authors: Zichen
authors: Z
authors: Wang
mesh_terms: D006358:Hot Temperature; D006868:Hydrolysis; D012275:Oryza / Q000737:chemistry*; D053260:Soot / Q000737:chemistry*; D013059:Spectrum Analysis, Raman; D014961:X-Ray Diffraction
chemical_list: D053260:Soot