Water vapor adsorbent for adsorption heat pump, method for producing water vapor adsorbent, and adsorption heat pump including water vapor adsorbent
US9387457B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2012 |
| Grant date | Jul 12, 2016 |
| Priority date | — |
| Expiry date | Feb 11, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/129
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
There is provided a water vapor adsorbent for adsorption heat pumps that has high adsorption and desorption performance and high water resistance, such as submersion resistance. The water vapor adsorbent contains a zeolite that contains at least a silicon atom, an aluminum atom, and a phosphorus atom in its framework structure and that has a framework density of 12.0 T/1,000 cubic angstroms or more and 16.0 T/1,000 cubic angstroms or less, wherein the water vapor adsorbent contains a group 11 metal of the periodic table, which constitutes 0.1% to 15% by weight of the zeolite. In the zeolite containing the group 11 metal, an ion of the group 11 metal substitutes for a Bronsted acid site, which promotes a hydrolysis reaction of the zeolite, and decreases the number of Bronsted acid sites of the zeolite, thereby improving the water resistance, such as submersion resistance, of the zeolite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.