C-13 NMR AND FTIR STUDY OF THERMAL ANNEALING OF AMORPHOUS HYDROGENATED CARBON

被引：48

作者：

LUKINS, PB ^{[1
]}

MCKENZIE, DR ^{[1
]}

VASSALLO, AM ^{[1
]}

HANNA, JV ^{[1
]}

机构：

[1] CSIRO,DIV COAL TECHNOL,N RYDE,NSW 2113,AUSTRALIA

来源：

CARBON | 1993年 / 31卷 / 04期

关键词：

AMORPHOUS CARBON; NUCLEAR MAGNETIC RESONANCE; INFRARED SPECTROSCOPY; HEAT TREATMENT; THERMAL ANNEALING; MICROSTRUCTURE;

D O I：

10.1016/0008-6223(93)90111-M

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：

Amorphous hydrogenated carbon deposited from acetylene in a dc glow discharge has been studied using solid-state C-13 NMR and FTIR spectroscopies. The fraction of sp2 carbon and the fraction of sp2 carbons that bear a proton increase from 0.39 and 0.33, respectively, for the as-deposited material to approximately 1.0 and 0.44, respectively, after annealing at 500-degrees-C. The loss of aliphatic carbon with increasing temperature arises not from aromatization but from outgassing of hydrocarbons or evolution of CO and CO2 formed by reactions between oxygen and the film. Infrared spectra are presented which show absorption features not previously seen for this material. The changing structure with heat treatment and the role of oxygen in the formation and modification of the material are discussed.

引用

页码：569 / 575

页数：7

共 28 条

[21]

PINES MG, 1984, J CHEM PHYS, V54, P5699

[22]

ROBERTSON J, 1986, ADV PHYS, V35, P317, DOI 10.1080/00018738600101911

[23] FATE OF C-13-LABELED ALKYL-GROUPS ON REDUCTIVELY ALKYLATED LIDDELL COAL DURING HYDROGENATION AT 400-DEGREES-C [J].