SURFACE-PROPERTIES OF MAGNESIUM-OXIDE OBTAINED FROM BASIC MAGNESIUM CARBONATE - INFLUENCE OF PREPARATION CONDITIONS OF MAGNESIUM CARBONATE

被引：11

作者：

CHOUDHARY, VR

PATASKAR, SG

ZOPE, GB

CHAUDHARI, PN

机构：

[1] Chemical Engineering Division, National Chemical Laboratory, Pune

来源：

JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY | 1995年 / 64卷 / 04期

关键词：

BASIC MAGNESIUM CARBONATE; MAGNESIUM OXIDE; SURFACE AREA; SURFACE BASICITY; BASE STRENGTH DISTRIBUTION; CATALYST PREPARATION (PRECIPITATION);

D O I：

10.1002/jctb.280640414

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Surface area, total basicity and base strength distribution (weak, strong and intermediate strength basic sites) of magnesium oxide obtained from basic magnesium carbonate (by its decomposition at 873 K) prepared by precipitation using different magnesium salts, precipitating agents and precipitating conditions (viz. concentration of magnesium salt, pH, temperature, mode of mixing and ageing period) have been thoroughly investigated. The total basicity and base strength distribution of the different magnesium oxide samples have been determined by step-wise thermal desorption of carbon dioxide from 323 to 1253 K. The chemical composition of basic magnesium carbonate and the surface properties and carbon dioxide content of magnesium oxide are found to be strongly influenced by the aforementioned preparation conditions of basic magnesium carbonate.

引用

页码：407 / 413

页数：7

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