5 patents
Utility
Acidic zirconium hydroxide
19 Sep 23
This invention relates to azirconium hydroxideor zirconium oxide comprising, on an oxide basis, up to 30 wt % of a dopant comprising one or more of silicon, sulphate, phosphate, tungsten, niobium, aluminium, molybdenum, titanium or tin, and having acid sites, wherein the majority of the acid sites are Lewis acid sites.
Hazel Stephenson, Iryna Chepurna, Deborah Jayne Harris, David Scapens
Filed: 30 Jan 17
Utility
Zirconia-based compositions for use as three way catalysts
28 Mar 23
A cerium-zirconium based mixed oxide composition have: (a) a Ce:Zr molar ratio of 1 or less, and (b) a cerium oxide content of 10-50% by weight.
Deborah Jayne Harris, David Alastair Scapens
Filed: 27 Oct 16
Utility
Zirconia-based Aqueous Np-dispersion for Use In Coating Filter Substrates
17 Mar 22
This invention relates to an aqueous dispersion of particles, the dispersion having a particle content of 10-70 wt %, and the particles comprising, on an oxide basis: (a) 10-98 wt % in total of ZrO2+HfO2, and (b) 2-90 wt % in total of AI2O3, CeO2, La2O3, Nd2O3, Pr6O11, Y2O3, or a transition metal oxide, wherein the dispersion has a Z-average particle size of 100-350 nm and the particles have a crystallite size of 1-9 nm.
David Alastair SCAPENS, Deborah Jayne HARRIS
Filed: 2 Dec 19
Utility
Corrodible Downhole Article
17 Feb 22
This invention relates to a corrodible downhole article comprising an aluminium alloy, wherein the aluminium alloy comprises (a) 3-15 wt % Mg, (b) 0.01-5 wt % In, (c) 0-0.25 wt % Ga, and (d) at least 60 wt % Al.
Matthew MURPHY, Mark TURSKI
Filed: 26 Nov 19
Utility
ZIRCONIA-BASED COMPOSITIONS FOR USE IN PASSIVE NOx ADSORBER DEVICES
1 Apr 20
A passive NOX adsorbent includes: palladium, platinum or a mixture thereof and a mixed or composite oxide including the following elements in percentage by weight, expressed in terms of oxide: 10-90% by weight zirconium and 0.1-50% by weight of least one of the following: a transition metal or a lanthanide series element other than Ce.
Deborah Jayne HARRIS, David Alastair SCAPENS, John G. DARAB, Mark CROCKER, Yaying JI
Filed: 2 Dec 19
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