高岭石碱活化生成金属氧化物基羟基碳酸钙

IF 0.5 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY

Chemija Pub Date : 2020-07-19 DOI:10.6001/chemija.v31i3.4286

E. AlShamaileh, M. Esaifan, Qusay Abu-Afifeh

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引用次数: 0

摘要

采用x射线衍射(XRD)和差示扫描量热法(DSC)研究了高岭石碱活化生成金属氧化物基羟基碳酸钙的方法。采用不同的金属氧化物(CoO、MgO、FeO和SiO2)制备金属氧化物基羟基钠石。XRD证实了高岭石向羟基碳酸钙的转变。在热力学研究中，采用不同升温速率下DSC曲线的最高峰温度来确定羟基钠石形成的活化能(Ea)。氧化镁和氧化钴的形成过程是放热的，而氧化铁的形成过程是吸热的。

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Formation of metal oxide-based hydroxysodalite by alkali-activation of kaolinite

2 Department of Chemistry, Faculty of Science and Arts, University of Petra, Amman, Jordan The formation of metal oxide-based hydroxysodalite by alkali-activation of kaolinite is studied using X-ray diffraction (XRD) study and differential scanning calorimetry (DSC) analysis. Different metal oxides (CoO, MgO, FeO and SiO2) were used to form the metal oxide-based hydroxysodalite. The transformation from kaolinite into hydroxysodalite is confirmed by XRD. In the thermodynamic study, the maximum peak temperatures for DSC curves at various heating rates were used to determine the activation energy (Ea) of the hydroxysodalite formation. With magnesium oxide and cobalt oxide, the formation process was found to be exothermic while it was endothermic with iron oxide.

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来源期刊

Chemija 化学-化学综合

CiteScore

1.30

自引率

16.70%

发文量

审稿时长

>12 weeks

期刊介绍： Chemija publishes original research articles and reviews from all branches of modern chemistry, including physical, inorganic, analytical, organic, polymer chemistry, electrochemistry, and multidisciplinary approaches.