THE INVESTIGATION OF THE PORE STRUCTURE OF SILICA-GELS WITH LONG-CHAIN ALKYL GRAFTS BY THERMAL-ANALYSIS

被引：11

作者：

GOWOREK, J

STEFANIAK, W

机构：

[1] Faculty of Chemistry, Maria Curie-Skłodowska University

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 1993年 / 80卷 / 2-3期

关键词：

LONG-CHAIN ALKYL GRAFTS; POROSITY; SILICA GELS; THERMOGRAVIMETRIC ANALYSIS;

D O I：

10.1016/0927-7757(93)80205-S

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 total pore volumes and the core size distributions were calculated for the silica gel Si-100 and chemically modified silica gels RP-8 and RP-18 on the basis of the thermal desorption data of various liquids. The results obtained are compared with those from the nitrogen adsorption/desorption method. Good consistency between the parameters obtained by using different methods is observed in the case of unmodified silica gel. The presence of long alkyl chains on the silica surface strongly influences the pore diameter calculated from thermogravimetric data.

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页码：251 / 256

页数：6

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