Visible light catalyst for removing sulfur-containing compounds in fuel oil, and preparation and use
US9415376B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2011 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Dec 9, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/202
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention relates to a visible-light-responsive photocatalyst for photocatalyticly oxidation desulphurization and method for preparation and application thereof. The catalyst is comprised of one type of metal MI, one type of metal oxide MIIOx and BiVO4 as the supporter, wherein the mass ratio of the sum of the two types of metal (MI+MII) to BiVO4 is from 1:5000 to 1:50; the mass ratio of the type of metal MI to the type of metal MII is from 1:50 to 50:1. The catalyst is used in the photocatalytic oxidation desulphurization. Under mild condition (room temperature, 1 atm), using O2 as the oxidant and xenon lamp (wavelength 420 nm<λ<700 nm) as the light source, avoid the oil's absorption of light (mainly in the violet area which is below 420 nm), the desulphurization ratio of thiophene can be above 90%, meanwhile the oil won't be excited. The sulfur in thiophene can be oxidized to SO3 and absorbed by the absorbent after escaped from the reaction system. Thus extraction of the conventional oxidative desulphurization can be saved to lower the operation cost. The visible-light-responsive photocatalyst can be widely used in oil compared with the UV-light-responsive photocatalyst. We …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.