Influence of oxidation on the preparation of porous carbons from phenol-formaldehyde resins with KOH activation

被引：25

作者：

Teng, H ^{[1
]}

Wang, SC ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Chem Engn, Tainan 70101, Taiwan

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2000年 / 39卷 / 03期

关键词：

D O I：

10.1021/ie990473i

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The influence of oxidation on the production of high-porosity carbons from phenol-formaldehyde resins with KOH activation were examined under various preparation conditions. The activation process principally consisted of KOH impregnation followed by carbonization. Experimental results showed that prior to carbonization treating the resins with oxygen at 120 degrees C, either before or after KOH impregnation, enabled the enhancement of the yield of the carbon products. The porosity development was found to be hindered by conducting oxidation prior to the impregnation. For oxidation performed after the impregnation, at a low KOH/resin ratio the porosity was found to decrease upon oxidation, whereas the oxidation enhanced porosity development for activation performed at higher ratios. Varying the carbonization temperature and time did not show obvious influence on the effects of the oxidation.

引用

页码：673 / 678

页数：6

共 27 条

[1] The preparation of active carbons from coal by chemical and physical activation
Ahmadpour, A
Do, DD
[J]. CARBON, 1996, 34 (04) : 471 - 479
[2] Comparison of equilibria and kinetics of high surface area activated carbon produced from different precursors and by different chemical treatments
Ahmadpour, A
King, BA
Do, DD
[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1998, 37 (04) : 1329 - 1334
[3] The preparation of activated carbon from macadamia nutshell by chemical activation
Ahmadpour, A
Do, DD
[J]. CARBON, 1997, 35 (12) : 1723 - 1732
[4] INFLUENCE OF COAL OXIDATION ON THE STRUCTURE OF CHAR
ALVAREZ, T
FUERTES, AB
PIS, JJ
PARRA, JB
PAJARES, J
MENENDEZ, R
[J]. FUEL, 1994, 73 (08) : 1358 - 1364
[5] Development of microporosity in carbons derived from alkali digested coal
Amarasekera, G
Scarlett, MJ
Mainwaring, DE
[J]. CARBON, 1998, 36 (7-8) : 1071 - 1078
[6] CARBONIZATION OF COALS IN THE PRESENCE OF ALKALINE HYDROXIDES AND CARBONATES - FORMATION OF ACTIVATED CARBONS
EHRBURGER, P
ADDOUN, A
ADDOUN, F
DONNET, JB
[J]. FUEL, 1986, 65 (10) : 1447 - 1449
[7] The production of chemically-activated carbon
Evans, MJB
Halliop, E
McDonald, JAF
[J]. CARBON, 1999, 37 (02) : 269 - 274
[8] GREENBANK M, 1993, WATER TECHNOLOGY, V16, P56
[9] CATALYTIC EFFECTS OF ZINC-CHLORIDE IN THE PYROLYSIS OF SPANISH HIGH SULFUR COALS
IBARRA, JV
MOLINER, R
PALACIOS, JM
[J]. FUEL, 1991, 70 (06) : 727 - 732
[10] Activated carbons from Spanish coals .2. Chemical activation
IllanGomez, MJ
GarciaGarcia, A
deLecea, CSM
LinaresSolano, A
[J]. ENERGY & FUELS, 1996, 10 (05) : 1108 - 1114

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