Review of fundamental properties of CO2 hydrates and CO2 capture and separation using hydration method

Review of fundamental properties of CO2 hydrates and CO2 capture and separation using hydration method

Type	Journal Article
Author	Z. W. Ma
Author	P. Zhang
URL	http://www.sciencedirect.com/science/article/pii/S1364032115010461
Volume	53
Pages	1273-1302
Publication	Renewable and Sustainable Energy Reviews
Date	January 2016
Abstract	Hydration is an attractive method for CO2 capture and separation from either post-combustion flue gas or pre-combustion fuel gas. Authors review the research on CO2 hydrate and the hydrates of gas mixtures of CO2+N2/H2/CH4, including studies of fundamental thermo-physical properties, molecular structures and hydrate formation equilibrium conditions. Some promoters, including quaternary ammonium salt etc. are used in the CO2 hydration process to reduce the hydrate equilibrium pressure and to enhance the hydrate kinetic and stability. Accordingly, they review their promotion effect on CO2 hydrate and on the hydrates of gas mixture of CO2+N2/H2/CH4. They also summarize the applications of hydrate technology in CO2 capture and separation, and the corresponding performance is summarized and the bottlenecks are discussed.