PORE STRUCTURE OF THE ARGONNE PREMIUM COALS

被引：83

作者：

LARSEN, JW ^{[1
]}

HALL, P ^{[1
]}

WERNETT, PC ^{[1
]}

机构：

[1] EXXON RES & ENGN CO,ANNANDALE,NJ 08801

来源：

ENERGY & FUELS | 1995年 / 9卷 / 02期

关键词：

D O I：

10.1021/ef00050a018

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：

Data are presented that are inconsistent with the accepted model of coal pores existing as an interconnected network of bottlenecked pores. It is proposed that pores in coals are isolated and can be reached only by diffusion through the solid, The fractal dimensionality of the pores in five Argonne Premium Coals were measured by small-angle X-ray scattering and vary between 2.35 and 2.87. The adsorption of the following gases has been measured on all of the Argonne coals: N-2, CO2, ethane, cyclopropane, cyclobutane, cyclopentane, and cyclohexane. Except for Zap lignite, there is a very steep dependence of BET surface area on adsorbate size which is rationalized as being due to the size dependence of the adsorbate diffusion rates through coals.

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页码：324 / 330

页数：7

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