Adsorbents for heat pumps and adsorption refrigerators
Patents
| Language: |
Итальянский |
| Type: |
Invention |
| Number |
IT 1306893 B1 |
| Request number: |
IT 1999-RM383 |
| Request date: |
Jun 11, 1999 |
| patent.field.start_date: |
|
| Registration date: |
Oct 11, 2001 |
| patent.field.request_publication_date: |
|
The adsorbents having a composite structure include ≥1 porous solid matrix and ≥1 hygroscopic substance. The solid matrix is selected from a group contg. silica gel, Al2O3, polymers, activated C, porous metals, and clay minerals with an expanded structure. The hygroscopic substance is an inorg. salt selected from a group contg. CaCl2, LiBr, LiCl, MgCl2, LiOH, Ca(OH)2, and Mg(OH)2. The pore size of the solid matrix is 3-20 nm. A method for prepn. of the adsorbents involves (1) prepn. of a 30-60 wt.% aq. soln. of the hygroscopic substance and (2) impregnation of the solid matrix to fill the pores. The adsorbents are suitable for heat pumps and adsorption refrigerators.