Marie Singer , Robert van Geldern , Johannes A.C. Barth , Daniel Jansen
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引用次数: 0
Abstract
This study concerns wet carbonation of β-C2S (Ca2SiO4) in a closed system at 23 °C. The progress of carbonation was detected by quantitative X-ray diffraction (QXRD) and thermogravimetric analysis (TGA). Further measurements of pH and ion concentrations as well as modelling carbon species and saturation indices were done. Additionally, stable carbon isotope ratios (δ13C) in CO2, dissolved inorganic carbon (DIC) and carbonate phases were measured. The aim of this study was to investigate δ13C isotope values during C2S carbonation. If a systematic fractionation of carbon isotopes occurs during the reaction, it can help to quantify the carbonation reaction. During the carbonation process over 48 h, we found carbon isotope distributions from the gaseous phase to the solution and ultimately to the solid phase. Calculations confirm the direct relation of δ13C values to the carbonation progress. With this, stable isotope measurements offer a promising tool to monitor the reaction progress in-situ.
期刊介绍:
The Journal of CO2 Utilization offers a single, multi-disciplinary, scholarly platform for the exchange of novel research in the field of CO2 re-use for scientists and engineers in chemicals, fuels and materials.
The emphasis is on the dissemination of leading-edge research from basic science to the development of new processes, technologies and applications.
The Journal of CO2 Utilization publishes original peer-reviewed research papers, reviews, and short communications, including experimental and theoretical work, and analytical models and simulations.