Journal
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
Volume 38, Issue 1, Pages 98-111Publisher
WILEY
DOI: 10.1002/ep.13028
Keywords
thermodynamics; CO2; greenhouse gas; alternate fuels; simulation
Categories
Funding
- Department of Science and Technology [DST/INT/SOUTH AFRICA/P 08/2014]
Ask authors/readers for more resources
Over the past few years, chemical conversion of CO2 to alternative fuels such as methanol, dimethyl ether (DME), and hydrocarbons (HCs) is one of the hot topics in chemical engineering. Taking this into consideration, we have investigated the effects of wide range of temperature, pressure and H-2/CO2 ratio (with and without CO) on the hydrogenation of CO2 to methanol, DME, and HCs by minimizing the Gibbs free energy. The energy calculations indicate that HC synthesis reaction has the minimum Gibbs free energy change. High pressure, low temperature, and high H-2/CO2 ratio favored the methanol and DME synthesis. The HC synthesis is favored by high pressure, low temperature, and high H-2/CO2 ratio, but the presence of CO has a major effect on the HC selectivity. The presence of CO suppresses CO2 conversion in all the three reactions studied. CO2 conversion is maximum for the HC synthesis at H-2/CO2 > 3. The experimental data obtained from laboratory scale fixed bed reactor show a reasonable comparison with the simulation results. The thermodynamic analysis combined with the catalyst development and chemical kinetics are expected to lead towards a competent methodology for CO2 conversion. (c) 2018 American Institute of Chemical Engineers Environ Prog, 38: 98-111, 2019
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available