Effects of Transition Metal Oxide Catalysts on MEA Solvent Regeneration for the Post-Combustion Carbon Capture Process
| Autor: | Dae Ho Lim, Jong Kyun You, Yeung Ho Park, Umair H. Bhatti, Sung-Chan Nam, Soo Hyun Choi, Abdul Karim Shah, Il Hyun Baek, Jeong Nam Kim |
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| Rok vydání: | 2017 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Chemistry General Chemical Engineering Inorganic chemistry Oxide 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology Endothermic process Catalysis Solvent chemistry.chemical_compound 020401 chemical engineering Transition metal Environmental Chemistry Amine gas treating Lewis acids and bases 0204 chemical engineering 0210 nano-technology Brønsted–Lowry acid–base theory |
| Zdroj: | ACS Sustainable Chemistry & Engineering. 5:5862-5868 |
| ISSN: | 2168-0485 |
| DOI: | 10.1021/acssuschemeng.7b00604 |
| Popis: | Large heat duty for amine regeneration in absorption-based CO2 capture is one of the major drawbacks of this process. Along with a highly endothermic carbamate breakdown reaction in the stripper, the difficulty of proton transfer from protonated amines to water in the amine regeneration process is also considered a basic reason for high heat duty. Transition metal oxide catalysts can play a vital role in decreasing the required thermal energy for amine regeneration in the stripper by providing Bronsted acids and Lewis acids that would help break down the carbamate by direct attack. MEA saturated with CO2 at 35 °C, with initial loading of 0.56 mole CO2/mole amine, was used in this study. The performance of five different transition metal oxide catalysts, V2O5, MoO3, WO3, TiO2, and Cr2O3, was studied separately to investigate the effects of these catalysts on amine regeneration in the temperature range of 35–86 °C. It has been observed that MoO3 performance is much better as it regenerated almost double of ... |
| Databáze: | OpenAIRE |
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