SAXS INVESTIGATION OF MODEL CARBON PORE STRUCTURE AND ITS CHANGE WITH GASIFICATION

被引：23

作者：

FOSTER, MD ^{[1
]}

JENSEN, KF ^{[1
]}

机构：

[1] UNIV MINNESOTA,DEPT CHEM ENGN & MAT SCI,MINNEAPOLIS,MN 55455

来源：

CARBON | 1991年 / 29卷 / 02期

关键词：

SAXS; GASIFICATION; CARBON DIOXIDE; PORE STRUCTURE;

D O I：

10.1016/0008-6223(91)90077-V

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：

The evolution of the internal structure of a model process carbon, Carbosieve-S, during gasification with CO2 is studied by small angle x-ray scattering (SAXS). The SAXS data are interpreted using a random pore structure model based on a three-dimensional Voronoi tessellation. This model contains voids of random shape and various size. By fitting the predicted scattering to observed scattering intensities versus scattering vector for partially converted samples, pore structure parameters for the micro and mesoporosity as well as the surface area are determined as a function of gasification conversion. The utility of the model and SAXS in studying changing pore structures is discussed.

引用

页码：271 / 282

页数：12

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