Investigation of free radicals and carbon structures in chars generated from pyrolysis of antibiotic fermentation residue

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	Investigation of free radicals and carbon structures in chars generated from pyrolysis of antibiotic fermentation residue
	Hong, Chen; Wang, Zhiqiang; Xing, Yi; Li, Yifei; Yang, Qiang; Jia, Mengmeng; Feng, Lihui
刊名	RSC ADVANCES
	2016
卷号	6 期号:112 页码:111226-111232
英文摘要	The effect of pyrolysis on the chemical characteristics of Antibiotic Fermentation Residue (AFR) was studied in this paper. Electron Spin Resonance (ESR) spectrometry, X-ray photoelectron spectroscopy (XPS) and solid state C-13 nuclear magnetic resonance (C-13 NMR) spectroscopy were applied to investigate the variation of free radicals and carbon structures. Results indicated that the free radical concentration (N-g) of AFR/chars changed dramatically during the pyrolysis process, first increasing and then decreasing. N-g reached 1.24 x 10(19) spins per g in a N-2 atmosphere and 1.11 x 10(19) spins per g in a CO2 atmosphere at 320 degrees C. The g-values monotonically decreased, demonstrating that the chemical structures of free radicals changed during pyrolysis. Bond cleavage in methoxyl groups, aliphatic C-O bonds, aliphatic C-C bonds and C=O groups was enhanced with increasing pyrolysis temperature. These carbon structures converted to aromatic C-O bonds and aromatic C-C bonds through polymerization and condensation reactions. Compared with the CO2 atmosphere, the N-2 atmosphere was more conducive to the production of free radicals and aromatization of carbon structures in chars during pyrolysis process.
收录类别	SCI
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/35881]
专题	生态环境研究中心_环境化学与生态毒理学国家重点实验室
推荐引用方式 GB/T 7714	Hong, Chen,Wang, Zhiqiang,Xing, Yi,et al. Investigation of free radicals and carbon structures in chars generated from pyrolysis of antibiotic fermentation residue[J]. RSC ADVANCES,2016,6(112):111226-111232.
APA	Hong, Chen.,Wang, Zhiqiang.,Xing, Yi.,Li, Yifei.,Yang, Qiang.,...&Feng, Lihui.(2016).Investigation of free radicals and carbon structures in chars generated from pyrolysis of antibiotic fermentation residue.RSC ADVANCES,6(112),111226-111232.
MLA	Hong, Chen,et al."Investigation of free radicals and carbon structures in chars generated from pyrolysis of antibiotic fermentation residue".RSC ADVANCES 6.112(2016):111226-111232.