CO2 Capture by Carbon Aerogel–Potassium Carbonate Nanocomposites
Recently, various composites for reducing CO2 emissions have been extensively studied. Because of their high sorption capacity and low cost, alkali metal carbonates are recognized as a potential candidate to capture CO2 from flue gas under moist conditions. However, undesirable effects and character...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2016-01-01
|
| Series: | International Journal of Chemical Engineering |
| Online Access: | http://dx.doi.org/10.1155/2016/4012967 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832553248768131072 |
|---|---|
| author | Guang Yang Hongchao Luo Tomonori Ohba Hirofumi Kanoh |
| author_facet | Guang Yang Hongchao Luo Tomonori Ohba Hirofumi Kanoh |
| author_sort | Guang Yang |
| collection | DOAJ |
| description | Recently, various composites for reducing CO2 emissions have been extensively studied. Because of their high sorption capacity and low cost, alkali metal carbonates are recognized as a potential candidate to capture CO2 from flue gas under moist conditions. However, undesirable effects and characteristics such as high regeneration temperatures or the formation of byproducts lead to high energy costs associated with the desorption process and impede the application of these materials. In this study, we focused on the regeneration temperature of carbon aerogel–potassium carbonate (CA–KC) nanocomposites, where KC nanocrystals were formed in the mesopores of the CAs. We observed that the nanopore size of the original CA plays an important role in decreasing the regeneration temperature and in enhancing the CO2 capture capacity. In particular, 7CA–KC, which was prepared from a CA with 7 nm pores, exhibited excellent performance, reducing the desorption temperature to 380 K and exhibiting a high CO2 capture capacity of 13.0 mmol/g-K2CO3, which is higher than the theoretical value for K2CO3 under moist conditions. |
| format | Article |
| id | doaj-art-2e86c091ead244acab6e4bf5ea02b634 |
| institution | Kabale University |
| issn | 1687-806X 1687-8078 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Chemical Engineering |
| spelling | doaj-art-2e86c091ead244acab6e4bf5ea02b6342025-02-03T05:54:24ZengWileyInternational Journal of Chemical Engineering1687-806X1687-80782016-01-01201610.1155/2016/40129674012967CO2 Capture by Carbon Aerogel–Potassium Carbonate NanocompositesGuang Yang0Hongchao Luo1Tomonori Ohba2Hirofumi Kanoh3Graduate School of Science, Chiba University, Chiba 263-8522, JapanGraduate School of Science, Chiba University, Chiba 263-8522, JapanGraduate School of Science, Chiba University, Chiba 263-8522, JapanGraduate School of Science, Chiba University, Chiba 263-8522, JapanRecently, various composites for reducing CO2 emissions have been extensively studied. Because of their high sorption capacity and low cost, alkali metal carbonates are recognized as a potential candidate to capture CO2 from flue gas under moist conditions. However, undesirable effects and characteristics such as high regeneration temperatures or the formation of byproducts lead to high energy costs associated with the desorption process and impede the application of these materials. In this study, we focused on the regeneration temperature of carbon aerogel–potassium carbonate (CA–KC) nanocomposites, where KC nanocrystals were formed in the mesopores of the CAs. We observed that the nanopore size of the original CA plays an important role in decreasing the regeneration temperature and in enhancing the CO2 capture capacity. In particular, 7CA–KC, which was prepared from a CA with 7 nm pores, exhibited excellent performance, reducing the desorption temperature to 380 K and exhibiting a high CO2 capture capacity of 13.0 mmol/g-K2CO3, which is higher than the theoretical value for K2CO3 under moist conditions.http://dx.doi.org/10.1155/2016/4012967 |
| spellingShingle | Guang Yang Hongchao Luo Tomonori Ohba Hirofumi Kanoh CO2 Capture by Carbon Aerogel–Potassium Carbonate Nanocomposites International Journal of Chemical Engineering |
| title | CO2 Capture by Carbon Aerogel–Potassium Carbonate Nanocomposites |
| title_full | CO2 Capture by Carbon Aerogel–Potassium Carbonate Nanocomposites |
| title_fullStr | CO2 Capture by Carbon Aerogel–Potassium Carbonate Nanocomposites |
| title_full_unstemmed | CO2 Capture by Carbon Aerogel–Potassium Carbonate Nanocomposites |
| title_short | CO2 Capture by Carbon Aerogel–Potassium Carbonate Nanocomposites |
| title_sort | co2 capture by carbon aerogel potassium carbonate nanocomposites |
| url | http://dx.doi.org/10.1155/2016/4012967 |
| work_keys_str_mv | AT guangyang co2capturebycarbonaerogelpotassiumcarbonatenanocomposites AT hongchaoluo co2capturebycarbonaerogelpotassiumcarbonatenanocomposites AT tomonoriohba co2capturebycarbonaerogelpotassiumcarbonatenanocomposites AT hirofumikanoh co2capturebycarbonaerogelpotassiumcarbonatenanocomposites |