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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/19221
Title: Efficient synthesis of diethyl carbonate by Mg, Zn promoted hydroxyapatite via transesterification reaction
Authors: Shukla K.
Srivastava V.C.
Published in: International Journal of Chemical Reactor Engineering
Abstract: Transesterification of propylene carbonate (PC) and ethanol is a potent non-phosgene route for the synthesis of diethyl carbonate (DEC). In the present study, hydroxyapatite was synthesized and modified using Zn and Mg (Zn/HAP and Mg/HAP). Modified hydroxyapatite was used as catalyst for the synthesis of DEC. The thermal analysis of the catalytic precursor was studied using thermogravimetric-differential thermal analysis. The structural analysis, surface morphology, and nature of active sites over the catalyst surface were studied using techniques such as Fourier transform infrared spectroscopy, X-ray diffraction, N adsorption-desorption, scanning electron microscopy, and CO temperature-programmed desorption. Effects of reaction conditions like reaction temperature, reaction time and ethanol/PC molar ratio on DEC yield were also studied. The effects of Mg and Zn on HAP were found to be promotional for the synthesis of DEC using PC and ethanol. Mg/HAP was found to be the best among the three catalysts studied owing to its high basicity. Maximum DEC yield of 52.1 % was obtained in 5 h at 433 K using Mg/HAP catalyst.
Citation: International Journal of Chemical Reactor Engineering(2020), 18(4): -
URI: https://doi.org/10.1515/ijcre-2019-0205
http://repository.iitr.ac.in/handle/123456789/19221
Issue Date: 2020
Publisher: De Gruyter Open Ltd
Keywords: Basicity
Diethyl carbonate
Ethanol
Hydroxyapatite
Propylene carbonate
ISSN: 15426580
Author Scopus IDs: 57188985875
35565811700
Author Affiliations: Shukla, K., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India, Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
Srivastava, V.C., Department of Chemic
Corresponding Author: Srivastava, V.C.; Department of Chemical Engineering, India; email: vimalcsr@yahoo.co.in
Appears in Collections:Journal Publications [CH]

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