An oxygen transfer model for high purity graphite oxidation

被引：34
作者：
Kane, Joshua J. [1 ]
Karthik, Chinnathambi [1 ]
Ubic, Rick [1 ,2 ]
Windes, William E. [2 ,3 ]
Butt, Darryl P. [1 ,2 ]
机构：
[1] Boise State Univ, Dept Mat Sci & Engn, Boise, ID 83725 USA
[2] Ctr Adv Energy Studies, Idaho Falls, ID 83415 USA
[3] Idaho Natl Lab, Idaho Falls, ID 83415 USA
来源：
CARBON | 2013年 / 59卷
基金：
美国国家科学基金会;
关键词：
HETEROGENEOUS CO2 EVOLUTION; NUCLEAR GRAPHITE; PYROLYTIC-GRAPHITE; SURFACE COMPLEXES; PRODUCT RATIO; BASAL-PLANE; CARBON; KINETICS; GASIFICATION; O-2;
D O I：
10.1016/j.carbon.2013.02.053
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：
An intrinsic mathematical model is developed for the investigation of the gas-solid reaction kinetics of high-purity graphite and oxygen. This model is based upon the oxygen transfer mechanism and uses physically meaningful parameters that are directly comparable to the experimental and theoretical literature of the carbon-oxygen reaction system. The model was used to extract reaction parameters for NBG-18 polycrystalline graphite for oxygen/nitrogen mixtures with a total pressure of 100 kPa. Experimental temperatures ranged from 500 to 850 degrees C for oxygen partial pressures of 1, 5, 10, 20, and 40 kPa. The optimized model parameters are in good agreement with previously reported literature values. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：49 / 64
页数：16
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