FIELD: chemistry.
SUBSTANCE: invention relates to RHO zeolites, which can be used as kinetically selective adsorbents for oxygen and/or nitrogen, as well as for removing low levels of N2 from Ar and removing CO2 from methane. RHO zeolites with a Si/Al ratio from 3.2 to 4.5 and the content of non-proton out-lattice cations are disclosed, wherein zeolites contain no more than 1 proton per unit cell, and the size, number and charge of out-lattice cations that are present in the zeolite are such that 1 or less non-proton out-lattice cations per unit cell are required to occupy the positions of the 8-element ring.
EFFECT: zeolites have a comparable kinetic selectivity with CMS materials (carbon molecular sieves), but they are able to function at a much higher rate of adsorption and desorption.
16 cl, 15 dwg, 6 tbl, 15 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHODS USING IMPROVED COMPOSITIONS OF ADSORBENTS RHO | 2018 |
|
RU2696385C1 |
| RHO ZEOLITES AND A METHOD FOR PRODUCTION THEREOF | 2019 |
|
RU2739307C1 |
| CONFIGURABLE ADSORBENTS | 2018 |
|
RU2751716C2 |
| METHOD FOR OBTAINING SILVER-CONTAINING ZEOLITE LSX FOR THE SEPARATION OF AIR COMPONENTS | 2022 |
|
RU2799829C1 |
| SPEED-SELECTIVE/KINETICALLY SELECTIVE CYCLE OF ADSORPTION PROCESS ON MULTIPLE LAYERS | 2019 |
|
RU2756180C1 |
| SEPARATION AND STORAGE OF FLUIDS WITH THE USE OF ITQ-55 | 2015 |
|
RU2674121C2 |
| SEPARATION AND STORAGE OF FLUIDS WITH USE OF ITQ-55 | 2015 |
|
RU2675874C2 |
| SEPARATION AND STORAGE OF FLUIDS WITH THE USE OF ITQ-55 | 2015 |
|
RU2672424C2 |
| X-TYPE ZEOLITE, METHOD OF PREPARING LITHIUM AND TRIVALENT ION-EXCHANGE X-TYPE ZEOLITE (VERSIONS) AND METHOD OF SEPARATING NITROGEN FROM GAS MIXTURE | 1995 |
|
RU2127226C1 |
| METHOD FOR MANUFACTURING COMPOSITE ADSORBING LAYER WITH HIGH PACKING DENSITY, ADSORBER CONTAINING IT AND GAS SEPARATION BASED ON ADSORPTION USING ADSORBER | 2020 |
|
RU2799338C1 |
