DRIFT AND TK TPD ANALYSES OF SURFACE OXYGEN COMPLEXES FORMED DURING CARBON GASIFICATION

被引：140

作者：

ZHUANG, QL ^{[1
]}

KYOTANI, T ^{[1
]}

TOMITA, A ^{[1
]}

机构：

[1] TOHOKU UNIV,INST CHEM REACT SCI,2-1-1 KATAHIRA,SENDAI,MIYAGI 980,JAPAN

来源：

ENERGY & FUELS | 1994年 / 8卷 / 03期

关键词：

D O I：

10.1021/ef00045a028

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Surface oxygen complexes formed during carbon gasification with oxygen were studied by combining diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy with transient kinetic (TK) and temperature programmed desorption (TPD) techniques. It was found that lactone (and/or acid anhydride), carbonyl, and ether type complexes are formed on the carbon surface during gasification. The complexes which desorbed during the TK experiment were not detected with DRIFT. However, the complexes which are responsible for the CO2 and CO evolution in TPD were successfully identified with these combined techniques: CO2 desorption at around 900 K originates from the decomposition of lactone and/or acid anhydride, whereas CO desorption is mainly from carbonyl and ether type complexes.

引用

页码：714 / 718

页数：5

共 28 条

[1] CHARACTERIZATION OF COAL CHAR GASIFICATION RATE [J].

ADSCHIRI, T ;

NOZAKI, T ;

FURUSAWA, T ;

ZHU, ZB .

AICHE JOURNAL, 1991, 37 (06) :897-904

[2] THE ABSORPTION-BAND AT 1590 CM-1 IN THE INFRARED-SPECTRUM OF CARBONS [J].

AKHTER, MS ;

KEIFER, JR ;

CHUGHTAI, AR ;

SMITH, DM .

CARBON, 1985, 23 (05) :589-591

[3] THE INTERACTION OF CO2 AND CO WITH AN ALKALI CARBONATE CARBON SYSTEM STUDIED BY INSITU FOURIER-TRANSFORM INFRARED-SPECTROSCOPY [J].

CERFONTAIN, MB ;

MOULIJN, JA .

FUEL, 1986, 65 (10) :1349-1355

[4] INFRARED SPECTRA OF SOME CYCLIC ANHYDRIDES [J].

DAUBEN, WG ;

EPSTEIN, WW .

JOURNAL OF ORGANIC CHEMISTRY, 1959, 24 (10) :1595-1596

[5] A DRIFTS STUDY OF THE FORMATION OF SURFACE GROUPS ON CARBON BY OXIDATION [J].

FANNING, PE ;

VANNICE, MA .

CARBON, 1993, 31 (05) :721-730

[6] INFRARED SPECTRA OF OXYGEN-18 LABELLED CHARS [J].

FRIEDEL, RA ;

DURIE, RA ;

SHEWCHYK, Y .

CARBON, 1967, 5 (06) :559-&

[7] CHEMISTRY AND STRUCTURE OF COALS - DIFFUSE REFLECTANCE IR SPECTROSCOPY EQUIPMENT AND TECHNIQUES [J].

FULLER, EL ;

SMYRL, NR .

FUEL, 1985, 64 (08) :1143-1150

[8] IMPORTANCE OF ACTIVE SURFACE AREA IN CARBON-OXYGEN REACTION [J].

LAINE, NR ;

VASTOLA, FJ ;

WALKER, PL .

JOURNAL OF PHYSICAL CHEMISTRY, 1963, 67 (10) :2030-&

[9] ON THE KINETICS OF CARBON (CHAR) GASIFICATION - RECONCILING MODELS WITH EXPERIMENTS [J].

LIZZIO, AA ;

JIANG, H ;

RADOVIC, LR .

CARBON, 1990, 28 (01) :7-19

[10] INSITU INFRARED STUDY OF THE SURFACE OXIDATION OF ACTIVATED CARBON IN OXYGEN AND CARBON-DIOXIDE [J].

MELDRUM, BJ ;

ROCHESTER, CH .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1990, 86 (05) :861-865

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