Process for producing materials having a zeolite-type framework with heteroatoms incorporated therein
US10414664B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2017 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Nov 28, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/37
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process of producing a zeotype material having a zeolite-type framework. The process includes providing a zeolite having a framework, dealuminating the zeolite to remove aluminum atoms therefrom to produce a dealuminated framework comprising a plurality of vacancy sites, contacting the dealuminated framework with dichloromethane and a precursor comprising heteroatoms, and then heating the dealuminated framework, the dichloromethane, and the precursor under reflux conditions to incorporate the heteroatoms into at least some of the plurality of vacancy sites in the dealuminated framework to produce a zeotype material having a zeolite-type framework comprising the heteroatoms. In addition, a process is provided for producing a stannosilicate comprising a zeolite-type framework comprising Sn heteroatoms incorporated therein which form Sn sites in the zeolite-type framework each having an open configuration or a closed configuration. This process includes controlling relative amounts of Sn sites having open and closed configurations in the stannosilicate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.