Abstract
Composite adsorbents synthesized from zeolite 13X and CaCl2 were investigated for applications in solar adsorption systems. The effect of Ca-ion-exchange on the adsorption properties of zeolite 13X was studied. Sodium ions in the zeolite structure were replaced by calcium ions by ion exchange. It was found that the Ca-ion-exchange process decreased the specific surface areas of the Ca-ion-exchanged zeolites while the total pore volumes were increased. The optimized Ca-ion-exchange condition existed when soaking zeolite 13X in 46wt% CaCl2 solution for 36 hours. The increase in the total pore volume is good for further impregnating the zeolite with CaCl2. A large difference in equilibrium water uptake, 0.404g/g, between 25°C and 100°C under 870Pa was recorded for the 13X/CaCl2 composite adsorbent impregnated in 40wt% CaCl2 solution. This was 295% of that of zeolite 13X under the same condition. The 13X/CaCl2 composite adsorbent showed a high potential in replacing vapor compression chillers in producing chilled water for central air-conditioning systems.
| Original language | English |
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| Title of host publication | ASME 2011 5th International Conference on Energy Sustainability |
| Publisher | ASME |
| Pages | 23-28 |
| Number of pages | 6 |
| ISBN (Print) | 9780791854686 |
| DOIs | |
| Publication status | Published - 2011 |
| Event | ASME 2011 5th International Conference on Energy Sustainability, ES 2011 - Washington, DC, United States Duration: 7 Aug 2011 → 10 Aug 2011 |
Conference
| Conference | ASME 2011 5th International Conference on Energy Sustainability, ES 2011 |
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| Country/Territory | United States |
| City | Washington, DC |
| Period | 7/08/11 → 10/08/11 |