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Iranian Journal of Chemistry and Chemical Engineering، جلد ۴۱، شماره ۱، صفحات ۷۱-۷۸
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عنوان انگلیسی The Simple Method of Synthesizing Calcite and Aragonite from Indonesian Limestone
چکیده انگلیسی مقاله Precipitated CaCO3 (PCC) with calcite and aragonite phases have been successfully synthesized using natural limestone. Synthesis of PCC was carried out by the simple method of carbonation using slurry Ca(OH)2 with a variation of CO2 gas flow rate at room temperature and variation of temperatures at a constant  CO2 gas flow rate. The raw material used is a very high purity Madura Island limestone. The PCC product w:as char:acterized by X-Ray Diffraction (XRD), Fourier Transform Infra-Red (FT-IR), and Scanning Electron Microscope (SEM). PCC on CO2 gas flow variation produced the same phase, calcite with the characteristic of 2θ = 29.23° (104), rhombohedral cubic morphology, and a wavenumber of 712 cm-1 as displayed from the FTIR spectra. The mixture of aragonite and calcite phase was observed in PCC products with temperature variations of 60 - 90°C. The characteristic aragonite was observed at 2θ = 26.2° with needle-like morphology. The highest fraction of aragonite was at the temperature of 60°C at 71.35%.
کلیدواژه‌های انگلیسی مقاله Electron microscopy,Aragonite,Needle-like,Crystal morphology,Calcite
نویسندگان مقاله Fatimatul Munawaroh |
Natural Science Education Study Program, Faculty of Education, University of Trunojoyo Madura, Bangkalan, INDONESIA

Laila Khamsatul Muharrami |
Natural Science Education Study Program, Faculty of Education, University of Trunojoyo Madura, Bangkalan, INDONESIA

Triwikantoro Triwikantoro |
Department of Physics, Institute of Technology Sepuluh Nopember, Surabaya, INDONESIA

Zaenal Arifin |
Department of Physics, Institute of Technology Sepuluh Nopember, Surabaya, INDONESIA

نشانی اینترنتی https://ijcce.ac.ir/article_249588_64e22e0c1fc1177d3407287efd2d3519.pdf
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