US 12,303,869 B2
Nanosized ceramic plasma catalyst for stabilizing and assisting plasma combustion
Aleksander Nagornõi, Sillamäe (EE); Aleksandr Vlasov, Sillamäe (EE); Kristjan Tiik, Järsi küla (EE); and Peter Alexander Woolsey, Oxfordshire (GB)
Assigned to EFENCO OÜ, Sillamãe (EE)
Appl. No. 17/908,329
Filed by EFENCO OÜ, Sillamäe (EE)
PCT Filed Mar. 24, 2020, PCT No. PCT/EP2020/058213
§ 371(c)(1), (2) Date Aug. 31, 2022,
PCT Pub. No. WO2021/190734, PCT Pub. Date Sep. 30, 2021.
Prior Publication US 2023/0076755 A1, Mar. 9, 2023
Int. Cl. B01J 23/00 (2006.01); B01J 35/23 (2024.01); B01J 35/33 (2024.01); B01J 35/40 (2024.01); B01J 35/56 (2024.01)
CPC B01J 23/002 (2013.01) [B01J 35/23 (2024.01); B01J 35/33 (2024.01); B01J 35/40 (2024.01); B01J 35/56 (2024.01)] 16 Claims
OG exemplary drawing
 
1. A plasma catalyst in the form of a ceramic-matrix nanocomposite for initiation and sustaining plasma-assisted combustion, said ceramic-matrix nanocomposite being a structure comprising:
(1) at least a first part and a second part, said first part comprising a nanoporous wafer, and said second part comprising a plurality of crystalline nanowhiskers;
wherein said nanoporous wafer comprises at least one of the following components: (a) a metal oxide selected from the following IUPAC groups of the Periodic Table: (i) Group 4 metal oxides of Ti, Zr, and Hf, (ii) Group 5 metal oxides of V, Nb, and Ta, (iii) Group 6 metal oxide of W, and (iv) Group 13 metal oxide of Al, (b) silicon or silicon dioxide, and (c) silicon carbide; and
wherein each of the plurality of the crystalline nanowhiskers has a diameter of 1 to 100 nm and an aspect ratio length to diameter of more than 100 and comprises at least one of the following materials: (i) a perovskite poly- and/or single-crystal ferroelectric material with pyroelectric properties, (ii) a transition metal, or (iii) a conductive metal-oxide-metal ceramic, and (iv) complexes thereof; and
(2) a top cover in the form of a multilayer thin film or wafer covering said first and second parts, said top cover comprising at least the following three layers:
a catalyst grid;
an oxidation and alkaline preventing layer; and
a transparent conductive oxide ceramic layer.