COAL CONVERSION INTO CHAR - A STUDY OF THE INITIAL STEPS

被引：14

作者：

MASTRAL, AM ^{[1
]}

RUBIO, B ^{[1
]}

MEMBRADO, L ^{[1
]}

FANANAS, FJ ^{[1
]}

机构：

[1] CSIC,INST NACL CARBON,E-33080 OVIEDO,SPAIN

来源：

CARBON | 1990年 / 28卷 / 01期

关键词：

analysis; char formation; Coal pyrolysis;

D O I：

10.1016/0008-6223(90)90094-F

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：

This paper analyzes the first stages of char formation by different analytical techniques. The chars were obtained by coal pyrolysis carried out at 400°C for 5, 15, 30 and 60 minutes in a nonhydrogenating atmosphere, in absence of catalyst and according to a modified Gray-King method. The aim was to study the changes happening in converting coal into char. FTIR, CP/MAS 13C and FS were applied as spectroscopic techniques together with solvent swelling measurements, proximate and ultimate analysis. The obtained data shows the practical disappearance of the aliphatic hydrogen content with increasing pyrolysis time. The longer the stay in the reactor, the higher the char aromaticity. On the other hand, there is a change from highly condensed structures to pyrene and phenanthrene type molecules. © 1990.

引用

页码：65 / 69

页数：5

共 22 条

[1] SOLVENT SWELLING OF LIQUEFACTION RESIDUES [J].