XPS and NMR studies of phosphoric acid activated carbons

被引：809

作者：

Puziy, A. M. ^{[1
]}

Poddubnaya, O. I. ^{[1
]}

Socha, R. P. ^{[2
]}

Gurgul, J. ^{[2
]}

Wisniewski, M. ^{[3
]}

机构：

[1] Natl Acad Sci Ukraine, Inst Sorpt & Problems Endoecol, UA-03164 Kiev, Ukraine

[2] Polish Acad Sci, Inst Catalysis & Surface Chem, PL-30239 Krakow, Poland

[3] Nicholas Copernicus Univ, Dept Chem, Physicochem Carbon Mat Res Grp, PL-87100 Torun, Poland

来源：

CARBON | 2008年 / 46卷 / 15期

关键词：

D O I：

10.1016/j.carbon.2008.09.010

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Chemical structure of phosphorus species in two series of polymer-based and fruit-stone-based carbons obtained by phosphoric acid activation at 400-1000 degrees C were investigated by XPS and solid state P-31-NMR and C-13-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 P-31 NMR in carbons obtained at temperature range of 500-700 degrees C, phosphorus oxide was evidenced by XPS in carbon prepared at 900 degrees C and elemental phosphorus in carbon activated at 1000 degrees C. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：2113 / 2123

页数：11

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