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Chemcial Industry and Engineering 2016, Vol. 33 Issue (2) :23-29    DOI: 10.13353/j.issn.1004.9533.20141028
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Kinetics for the Synthesis of Calcium Formate by Calcium Hydroxide Carbonylation
Hou Zhiyuan, Lv Jing, Li Zhenhua
Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

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Abstract 

The synthesis of calcium formate by Ca(OH)2 carbonylation was studied in a stirred tank reactor in a semi-batch way. The products obtained from the carbonylation reaction were analyzed by XRD. It was found that the products of the reaction were calcium formate and a little calcium carbonate, hence the side reaction could be neglected since its rate was lower than the main reaction rate. The influence of reaction conditions on the formation of calcium formate were investigated, which illustrated that the gaseous diffusion resistance could be eliminated at the stirring speed up to 1 000 r/min. The reaction was carried out at temperature between 423 K and 453 K, pressure from 2.0 MPa to 3.5 MPa and different initial concentration of calcium hydroxide, and the kinetics was simulated using power function. The reaction order with respect to CO is 1 and the activation energy is 54.7 kJ·mol-1. The effectiveness of the established model could be validated by the comparison between the calculated and experimental data.

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Hou Zhiyuan
Lv Jing
Li Zhenhua
Keywordscalcium hydroxide;   carbonylation;   calcium formate;   kinetics     
Received 2014-03-12;
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Hou Zhiyuan, Lv Jing, Li Zhenhua.Kinetics for the Synthesis of Calcium Formate by Calcium Hydroxide Carbonylation[J]  Chemcial Industry and Engineering, 2016,V33(2): 23-29
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