Method for preparing supported catalyst for heterogeneous catalytic ozonation
US10618043B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2017 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Oct 13, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J35/36
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for preparing a catalyst, including: 1) uniformly mixing attapulgite, lithium-manganese spinel (Li—Mn spinel), manganese dioxide powders to form mixed raw material; adding water to the mixed raw material; stirring and mixing the mixed raw material and the water for between 5 and 15 min to yield a reaction mixture; 2) feeding the reaction mixture in 1) to a pelletizer to prepare spherical particles or hollow cylindrical particles; drying the spherical particles or the hollow cylindrical particles to yield a precursor; 3) heating the precursor in a muffle furnace, and calcining the precursor to yield a crude catalyst; 4) mixing the crude catalyst with an acid solution; alternating between ultrasound and microwave to wash the crude catalyst; and 5) washing the crude catalyst in 4) with water; and drying the catalyst for 12 hrs in air at 105° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.