# US 10,864,499 B2 · High porosity cerium and zirconium containing oxide > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,864,499 B2 - Document ID: US10864499B2 - Status: Granted - Kind: B2 - Application number: 15/509,144 - Filed: 2015-09-04 - Published: 2017-09-28 - Granted: 2020-12-15 - Earliest claimed: 2014-09-05 - Assignees: Neo Performance Materials (Singapore) Pte. Ltd. - Applicants: Neo Performance Materials (Singapore), Pte. Ltd. - Inventors: Dmitrios Psaras; Szu Hwee Ng; Happy; Shaun Pei Xiong Tio - Web page: https://patentgrep.com/patent/US10864499B2 ## CPC - B01J 23/002: {Mixed oxides other than spinels, e.g. perovskite} - B01D 53/945: {characterised by a specific catalyst} - B01J 23/10: of rare earths - B01J 23/63: with rare earths or actinides - B01J 35/60: characterised by their surface properties or porosity - B01J 35/612: {less than 10 m2/g} - B01J 35/613: {10-100 m2/g} - B01J 35/635: {0.5-1.0 ml/g} - B01J 35/638: {more than 1.0 ml/g} - B01J 35/66: Pore distribution - B01J 37/031: {Precipitation} - B01J 37/06: Washing {(B01J37/0009, B01J37/0018 take precedence)} - B01J 37/08: Heat treatment {(B01J37/0009, B01J37/0018 take precedence)} - B01J 37/088: {Decomposition of a metal salt} - C01G 25/02: Oxides - B01D 2255/206: Rare earth metals - B01D 2255/407: Zr-Ce mixed oxides - B01D 2255/9205: Porosity - B01D 2255/9207: Specific surface - B01J 35/647: {2-50 nm} - B01J 35/651: {50-500 nm} - B01J 35/657: {larger than 1000 nm} - B01J 35/695: {polymodal} - B01J 2523/00: Constitutive chemical elements of heterogeneous catalysts - B01J 2523/36: Yttrium - B01J 2523/3712: Cerium - B01J 2523/48: Zirconium - C01P 2004/82: two phases having the same anion, e.g. both oxidic phases - C01P 2006/12: Surface area - C01P 2006/13: thermal stability thereof at high temperatures - C01P 2006/14: Pore volume - B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - C01G: COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F (metal hydrides {monoborane, diborane or addition complexes thereof} C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts or peroxyacids C01B15/00; thiosulfates, dithionites, polythionates C01B17/64; compounds containing selenium, or tellurium C01B19/00; binary compounds of nitrogen with metals C01B21/06; azides C01B21/08; {compounds containing nitrogen, other non-metals and metal C01B21/082}; metal amides C01B21/092; nitrites C01B21/50; {compounds of noble gases C01B23/0005}; phosphides C01B25/08; salts of oxyacids of phosphorus C01B25/16; carbides C01B32/90; compounds containing silicon C01B33/00; compounds containing boron C01B35/00; compounds having molecular sieve properties but not having base-exchange properties C01B37/00; compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites, C01B39/00; cyanides C01C3/08; salts of cyanamide C01C3/16; thiocyanates C01C3/20) - C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS ## Abstract This disclosure generally relates to an oxide composition basically composed of cerium and zirconium that has exceptional and stable porosity, surface area and lattice oxygen mobility. The oxide composition can contain one or more other rare earth oxides other than cerium oxide. For example, some compositions can contain one or more of lanthanum oxide, yttrium oxide and neodymium oxide. The oxide composition can be useful as a catalyst, catalyst support, sensor applications and combinations thereof. ## Claims ### Claim 1 A composition comprising zirconium oxide, cerium oxide and optionally one or more other rare earth oxides other than cerium oxide, wherein the composition has a hydrogen thermal program reduction uptake after calcination at 1000 degrees Celsius for 10 hours of from about 0.5 to about 1.1 molar ratio of H2 consumption/CeO2, and wherein one or more of the following are true: (i) wherein the composition has a total pore volume of about 0.7 to about 3.5 cc/g; and (ii) wherein the composition has one or more of a BET and apparent surface area selected from the group consisting of from about 1.0 to about 6.0 m2/g after calcinations at 1200 degrees Celsius for a period of 10 hours or more in an oxidizing environment, from about 20 m2/g to about 30 m2/g after calcination at 1100 degrees Celsius for a period of 10 hours in an oxidizing environment, from about 45 m2/g to about 70 m2/g after calcination at 1000 degrees Celsius for a period of 10 hours in an oxidizing environment, and combinations thereof. ### Claim 2 (depends on 1) The composition of claim 1, wherein (i) is true. ### Claim 3 (depends on 2) The composition of claim 2, wherein the total pore volume is about 0.7 cc/g, and wherein the hydrogen thermal program reduction uptake after calcination at 1000 degrees Celsius for 10 hours is about 0.5 molar ratio of H2 consumption/CeO2. ### Claim 4 (depends on 2) The composition of claim 2, wherein the total pore volume is about 3.20 cc/g, and wherein the hydrogen thermal program reduction uptake after calcination at 1000 degrees Celsius for a period of 10 hours in an oxidizing environment is about 0.99 molar ratio of H2 consumption/CeO2. ### Claim 5 (depends on 2) The composition of claim 2, wherein the total pore volume is about 0.7 cc/g, and wherein the hydrogen thermal program reduction uptake after calcination at 1000 degrees Celsius for a period of 10 hours in an oxidizing environment is about 0.99 molar ratio of H2 consumption/CeO2. ### Claim 6 (depends on 2) The composition of claim 2, wherein the total pore volume is about 3.20 cc/g, and wherein the hydrogen thermal program reduction uptake after calcination at 1000 degrees Celsius for 10 hours is about 0.5 molar ratio of H2 consumption/CeO2. ### Claim 7 (depends on 1) The composition of claim 1, wherein (i) and (iii) are true. ### Claim 8 (depends on 7) The composition of claim 7, wherein the total pore volume is about 0.7 cc/g, and wherein the one or more of a BET and apparent surface area is about 20 m2/g after calcination at 1100 degrees Celsius for a period of 10 hours in an oxidizing environment. ### Claim 9 (depends on 7) The composition of claim 7, wherein the total pore volume is about 3.20 cc/g, and wherein the one or more of a BET and apparent surface area is about 30 m2/g after calcination at 1100 degrees Celsius for a period of 10 hours in an oxidizing environment. ### Claim 10 (depends on 7) The composition of claim 7, wherein the total pore volume is about 0.7 cc/g, and wherein the one or more of a BET and apparent surface area is about 45 m2/g after calcination at 1000 degrees Celsius for a period of 10 hours in an oxidizing environment. ### Claim 11 (depends on 7) The composition of claim 7, wherein the total pore volume is about 3.20 cc/g, and wherein the one or more of a BET and apparent surface area is about 70 m2/g after calcination at 1000 degrees Celsius for a period of 10 hours in an oxidizing environment. ### Claim 12 (depends on 1) The composition of claim 1, wherein (ii) is true. ### Claim 13 (depends on 12) The composition of claim 12, wherein the hydrogen thermal program reduction uptake after calcination at 1000 degrees Celsius for 10 hours is about 0.5 molar ratio of H2 consumption/CeO2, and wherein the one or more of a BET and apparent surface area is about 20 m2/g after calcination at 1100 degrees Celsius for a period of 10 hours in an oxidizing environment. ### Claim 14 (depends on 12) The composition of claim 12, wherein the hydrogen thermal program reduction uptake after calcination at 1000 degrees Celsius for a period of 10 hours in an oxidizing environment is about 0.99 molar ratio of H2 consumption/CeO2, and wherein the one or more of a BET and apparent surface area is about 30 m2/g after calcination at 1100 degrees Celsius for a period of 10 hours in an oxidizing environment. ### Claim 15 (depends on 12) The composition of claim 12, wherein the hydrogen thermal program reduction uptake after calcination at 1000 degrees Celsius for a period of 10 hours in an oxidizing environment is about 0.99 molar ratio of H2 consumption/CeO2, and wherein the one or more of a BET and apparent surface area is about 45 m2/g after calcination at 1000 degrees Celsius for a period of 10 hours in an oxidizing environment. ### Claim 16 (depends on 12) The composition of claim 12, wherein the hydrogen thermal program reduction uptake after calcination at 1000 degrees Celsius for 10 hours is about 0.5 molar ratio of H2 consumption/CeO2, and wherein the one or more of a BET and apparent surface area is about 70 m2/g after calcination at 1000 degrees Celsius for a period of 10 hours in an oxidizing environment. ### Claim 17 (depends on 1) The composition of claim 1, wherein the zirconium oxide comprises from about 1 to about 99 wt % of the composition, wherein the cerium oxide comprises from about 1 to about 99 wt % of composition, and wherein the one or more rare earth oxides other than cerium oxide comprise from about 0.1 to about 30 wt % of the composition. ### Claim 18 (depends on 1) The composition of claim 1, wherein the zirconium oxide comprises from about 60 wt % to about 85 wt % of the composition, wherein the cerium oxide comprises from about 5 wt % to about 30 wt % of the composition. ### Claim 19 (depends on 1) The composition of claim 1, wherein the composition comprises from about 5 wt % to about 20 wt % of the one or more rare earth oxides other than cerium oxide. ### Claim 20 (depends on 1) The composition of claim 1, wherein the composition comprises from about 1.5 wt % to about 6 wt % lanthanum oxide. ### Claim 21 A composition comprising zirconium oxide, cerium oxide and optionally one or more other rare earth oxides other than cerium oxide, wherein the composition has a hydrogen thermal program reduction uptake after calcination at 1000 degrees Celsius for 10 hours of from about 0.54 to about 0.99 molar ratio of H2 consumption/CeO2, and wherein one or more of the following are true: (i) wherein the composition has a total pore volume of about 0.65 to about 3.20 cc/g; and (ii) wherein the composition has one or more of a BET and apparent surface area selected from the group consisting of from about 1.9 to about 5.2 m2/g after calcinations at 1200 degrees Celsius for a period of 10 hours or more in an oxidizing environment, from about 24 m2/g to about 29 m2/g after calcination at 1100 degrees Celsius for a period of 10 hours in an oxidizing environment, from about 50 m2/g to about 65 m2/g after calcination at 1000 degrees Celsius for a period of 10 hours in an oxidizing environment, and combinations thereof. ### Claim 22 (depends on 21) The composition of claim 21, wherein (i) is true. ### Claim 23 (depends on 21) The composition of claim 21, wherein (ii) is true. ### Claim 24 (depends on 21) The composition of claim 21, wherein (i) and (ii) are true. ### Claim 25 (depends on 21) The composition of claim 21, wherein the zirconium oxide comprises from about 1 to about 99 wt % of the composition, wherein the cerium oxide comprises from about 1 to about 99 wt % of composition, and wherein the one or more rare earth oxides other than cerium oxide comprise from about 0.1 to about 30 wt % of the composition. ### Claim 26 (depends on 21) The composition of claim 21, wherein the zirconium oxide comprises from about 60 wt % to about 85 wt % of the composition, wherein the cerium oxide comprises from about 5 wt % to about 30 wt % of the composition. ### Claim 27 (depends on 21) The composition of claim 21, wherein the composition comprises from about 5 wt % to about 20 wt % of the one or more rare earth oxides other than cerium oxide. ### Claim 28 (depends on 21) The composition of claim 21, wherein the composition comprises from about 1.5 wt % to about 6 wt % lanthanum oxide. ### Claim 29 A composition comprising zirconium oxide, cerium oxide and optionally one or more other rare earth oxides other than cerium oxide, wherein the zirconium oxide comprises from about 60 wt % to about 85 wt % of the composition, wherein the cerium oxide comprises from about 5 wt % to about 30 wt % of the composition, wherein the one or more other rare earth oxides other than the cerium oxide or yttrium comprise from about 0.1 to about 30 wt % of the composition, wherein the composition has a hydrogen thermal program reduction uptake after calcination at 1000 degrees Celsius for 10 hours of about 0.5 to about 1.1 molar ratio of H2 consumption/CeO2, and wherein one or more of the following are true: (i) wherein the composition has a total pore volume of from about 0.7 to about 3.5 cc/g; and (ii) wherein the composition has one or more of a BET and apparent surface area selected from the group consisting of from about 1.0 to about 6.0 m2/g after calcinations at 1200 degrees Celsius for a period of 10 hours or more in an oxidizing environment, from about 20 m2/g to about 30 m2/g after calcination at 1100 degrees Celsius for a period of 10 hours in an oxidizing environment, from about 45 m2/g to about 70 m2/g after calcination at 1000 degrees Celsius for a period of 10 hours in an oxidizing environment, and combinations thereof. ### Claim 30 (depends on 29) The composition of claim 29, wherein (i) and (ii) are true.