US 12,337,345 B2
Plasma coating method for coating particulate matter
Gill Scheltjens, Boom (BE); Régis Heyberger, Thionville (FR); Marc Jacobs, Koerich (LU); Russel Pescod, Laarne (BE); and Filip Van Der Gucht, Boechout (BE)
Assigned to PARTIX, Leuven (BE)
Appl. No. 18/034,498
Filed by PARTIX, Leuven (BE)
PCT Filed Oct. 29, 2021, PCT No. PCT/EP2021/080217
§ 371(c)(1), (2) Date Apr. 28, 2023,
PCT Pub. No. WO2022/090518, PCT Pub. Date May 5, 2022.
Claims priority of application No. 20204638 (EP), filed on Oct. 29, 2020.
Prior Publication US 2023/0398570 A1, Dec. 14, 2023
Int. Cl. B05D 3/14 (2006.01); B05D 1/00 (2006.01)
CPC B05D 1/62 (2013.01) 15 Claims
 
1. A plasma coating method for coating particulate matter in a reaction chamber, comprising the steps of:
a) providing a low-temperature atmospheric plasma jet from a plasma gas outside of the reaction chamber;
b) inserting a precursor into the plasma jet, thereby obtaining a plasma coating flow comprising an excited precursor, followed by injecting the plasma coating flow comprising the excited precursor into the reaction chamber; and
c) subjecting particulate matter in the reaction chamber to said plasma coating flow comprising said excited precursor,
thereby obtaining particulate matter comprising an at least partial coating, the low-temperature of the plasma being at a temperature that is sufficiently low that the precursor and/or the substrate that are exposed to the plasma are not melted or damaged,
wherein the particulate matter is subjected to the plasma in a fluidized state,
wherein the method is executed using a fluidized bed reactor within the reaction chamber.