Composite adsorbents and method of making them
US11602728B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2020 |
| Grant date | Mar 14, 2023 |
| Priority date | — |
| Expiry date | Oct 2, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A composition for making composite adsorbents from a mixture of geopolymer, zeolite and activated carbon wherein a geopolymer material, a carbonaceous material, and an alkali activating agent are the components of the mixture. The alkali activating agent to carbonaceous material solid mass ratio is at least 0.25:1, respectively. A process for producing shaped composite adsorbents from the composition is done using conventional means such as mixing, shaping, extrusion and other methods. Alkali activation is used to convert the carbonaceous material to activated carbon, followed by hydrothermal treatment to convert the geopolymer material to zeolites. Shaped composite adsorbents fabricated from the composition of the instant invention are used for adsorption, purification, or other separation applications of liquids and gases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.