磷酸
X射线光电子能谱
碳-13核磁共振
化学
磷
磷酸盐
磷-31核磁共振波谱
化学位移
吸附
无机化学
碳纤维
材料科学
化学工程
碳化
核化学
作者
Alexander M. Puziy,Olga I. Poddubnaya,Robert P. Socha,Jacek Gurgul,M. Wisniewski
出处
期刊:Carbon
[Elsevier]
日期:2008-12-01
卷期号:46 (15): 2113-2123
被引量:594
标识
DOI:10.1016/j.carbon.2008.09.010
摘要
Abstract Chemical structure of phosphorus species in two series of polymer-based and fruit-stone-based carbons obtained by phosphoric acid activation at 400–1000 °C were investigated by XPS and solid state 31 P-NMR and 13 C-NMR. It has been shown that the most abundant and thus thermally stable phosphorus species in all investigated carbons is phosphate-like structure bound to carbon lattice via C-O-P bonding. Small contribution of phosphonates (C-P-O linkage) was observed by 31 P NMR in carbons obtained at temperature range of 500–700 °C, phosphorus oxide was evidenced by XPS in carbon prepared at 900 °C and elemental phosphorus in carbon activated at 1000 °C.
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