Decomposition kinetic characteristics of calcium carbonate containing organic acids by TGA
By means of thermogravimetric analysis (TGA), influences of organic acids such as citric acid, oxalic acid and tartaric acid on decomposition process and thermal behaviors of calcium carbonate were investigated in non-isothermal condition. Experiments were conducted from the ambient temperature to 1...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2017-05-01
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| Series: | Arabian Journal of Chemistry |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1878535213003249 |
| _version_ | 1819084215052926976 |
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| author | Xiang-Guo Li Yang Lv Bao-Guo Ma Wei-Qiang Wang Shou-Wei Jian |
| author_facet | Xiang-Guo Li Yang Lv Bao-Guo Ma Wei-Qiang Wang Shou-Wei Jian |
| author_sort | Xiang-Guo Li |
| collection | DOAJ |
| description | By means of thermogravimetric analysis (TGA), influences of organic acids such as citric acid, oxalic acid and tartaric acid on decomposition process and thermal behaviors of calcium carbonate were investigated in non-isothermal condition. Experiments were conducted from the ambient temperature to 1273 K at a heating rate of 10 K min−1. Moreover, the kinetic parameters (activation energy and pre-exponential factor) of the mixtures of calcium carbonate and organic acids were determined using the Coats–Redfern method. It is indicated that the decomposition process of calcium carbonate containing different organic acids includes three or four weight loss processes. In the zone of 370–450 °C, energy is released due to the combustion of organic products decomposed from organic salts, and energy increases with the increase of molecular weight of organic acid. Activation energy of the samples containing citric acid, oxalic acid and tartaric acid is decreased by 34.9%, 28.8% and 31.9%, respectively. The results may be used to provide a useful basis for further applying industrial wastes containing different organic acids in cement industries with high-efficiency. |
| first_indexed | 2024-12-21T20:44:55Z |
| format | Article |
| id | doaj.art-cc77d1ed253e48ecb265b3bbb8ba50a7 |
| institution | Directory Open Access Journal |
| issn | 1878-5352 |
| language | English |
| last_indexed | 2024-12-21T20:44:55Z |
| publishDate | 2017-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Arabian Journal of Chemistry |
| spelling | doaj.art-cc77d1ed253e48ecb265b3bbb8ba50a72022-12-21T18:50:52ZengElsevierArabian Journal of Chemistry1878-53522017-05-0110S2S2534S253810.1016/j.arabjc.2013.09.026Decomposition kinetic characteristics of calcium carbonate containing organic acids by TGAXiang-Guo LiYang LvBao-Guo MaWei-Qiang WangShou-Wei JianBy means of thermogravimetric analysis (TGA), influences of organic acids such as citric acid, oxalic acid and tartaric acid on decomposition process and thermal behaviors of calcium carbonate were investigated in non-isothermal condition. Experiments were conducted from the ambient temperature to 1273 K at a heating rate of 10 K min−1. Moreover, the kinetic parameters (activation energy and pre-exponential factor) of the mixtures of calcium carbonate and organic acids were determined using the Coats–Redfern method. It is indicated that the decomposition process of calcium carbonate containing different organic acids includes three or four weight loss processes. In the zone of 370–450 °C, energy is released due to the combustion of organic products decomposed from organic salts, and energy increases with the increase of molecular weight of organic acid. Activation energy of the samples containing citric acid, oxalic acid and tartaric acid is decreased by 34.9%, 28.8% and 31.9%, respectively. The results may be used to provide a useful basis for further applying industrial wastes containing different organic acids in cement industries with high-efficiency.http://www.sciencedirect.com/science/article/pii/S1878535213003249Calcium carbonateThermogravimetric analysisThermal decompositionKineticOrganic acid |
| spellingShingle | Xiang-Guo Li Yang Lv Bao-Guo Ma Wei-Qiang Wang Shou-Wei Jian Decomposition kinetic characteristics of calcium carbonate containing organic acids by TGA Arabian Journal of Chemistry Calcium carbonate Thermogravimetric analysis Thermal decomposition Kinetic Organic acid |
| title | Decomposition kinetic characteristics of calcium carbonate containing organic acids by TGA |
| title_full | Decomposition kinetic characteristics of calcium carbonate containing organic acids by TGA |
| title_fullStr | Decomposition kinetic characteristics of calcium carbonate containing organic acids by TGA |
| title_full_unstemmed | Decomposition kinetic characteristics of calcium carbonate containing organic acids by TGA |
| title_short | Decomposition kinetic characteristics of calcium carbonate containing organic acids by TGA |
| title_sort | decomposition kinetic characteristics of calcium carbonate containing organic acids by tga |
| topic | Calcium carbonate Thermogravimetric analysis Thermal decomposition Kinetic Organic acid |
| url | http://www.sciencedirect.com/science/article/pii/S1878535213003249 |
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