XRD evaluation of CO2 activation process of coal- and coconut shell-based carbons

被引：92

作者：

Yoshizawa, N ^{[1
]}

Maruyama, K ^{[1
]}

Yamada, Y ^{[1
]}

Zielinska-Blajet, M ^{[1
]}

机构：

[1] Natl Inst Resources & Environm, Energy Resources Dept, Tsukuba, Ibaraki 3058569, Japan

来源：

FUEL | 2000年 / 79卷 / 12期

关键词：

X-ray diffraction; trtanmission electron microscopy; activated carbon;

D O I：

10.1016/S0016-2361(00)00011-9

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：

Microporous carbons were prepared by CO2 activation of coal and coconut-shell chars. Specific surface area of the samples was determined by N-2 adsorption as a parameter for surface structure, and was compared with some crystallographic parameters evaluated with X-ray diffraction (XRD) pattern. Number of aromatic layers increased linearly with increase of specific surface area in both series of samples, while interlayer spacing and fraction of stacking structure showed more complicated variation. This result was explained in terms of the earlier gasification of carbon atoms out of the stacking structure of aromatic layers. Results by TEM observation also supported this interpretation. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1461 / 1466

页数：6

共 19 条

[1] On a theory of the van der Waals adsorption of gases [J].

Brunauer, S ;

Deming, LS ;

Deming, WE ;

Teller, E .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1940, 62 :1723-1732

[2]

BYRNE JF, 1995, POROSITY CARBONS CHA, P16

[3] X-RAY STUDIES OF SOME CARBONIZED COALS [J].

DIAMOND, R .

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1960, 252 (1008) :193-223

[4]

DUBININ MM, 1966, CHEM PHYS CARBON, V2, P52

[5]

FRANKLIN RE, 1950, ACTA CRYSTALLOGR, V18, P282

[6] THE MICROPORE STRUCTURE OF DISORDERED CARBONS DETERMINED BY HIGH-RESOLUTION ELECTRON-MICROSCOPY [J].

FRYER, JR .

CARBON, 1981, 19 (06) :431-439

[7] X-RAY SCATTERING FROM COALS [J].

HIRSCH, PB .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1954, 226 (1165) :143-&

[8] MICROTEXTURE OF NONGRAPHITIZING CARBONS AND TEM STUDIES OF SOME ACTIVATED SAMPLES [J].

HUTTEPAIN, M ;

OBERLIN, A .

CARBON, 1990, 28 (01) :103-111

[9] ORIGIN OF SUPERHIGH SURFACE-AREA AND MICROCRYSTALLINE GRAPHITIC STRUCTURES OF ACTIVATED CARBONS [J].

KANEKO, K ;

ISHII, C ;

RUIKE, M ;

KUWABARA, H .

CARBON, 1992, 30 (07) :1075-1088

[10] ADSORPTION AND STRUCTURE IN MICROPOROUS CARBONS [J].

MCENANEY, B .

CARBON, 1988, 26 (03) :267-274

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