US2005025698A1PendingUtilityA1

Production of fine-grained particles

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Assignee: VERY SMALL PARTICLE COMPANY PTPriority: Nov 21, 2000Filed: Jan 14, 2004Published: Feb 3, 2005
Est. expiryNov 21, 2020(expired)· nominal 20-yr term from priority
Inventors:Peter Cade TalbotJose Antonio AlarcoGeoffrey Alan Edwards
C01G 3/006C01P 2004/50C01G 51/42C01P 2006/12C01P 2006/16C01G 53/02B82Y 30/00C01P 2004/04C01G 53/56C01G 1/02C01G 51/02C01G 25/006C01B 13/18C01P 2002/01C01P 2004/64C01B 13/185C01P 2002/72C01G 45/1242C01G 25/02C01P 2002/52C01P 2006/14C01G 45/1264C01P 2006/17C01G 53/68C01G 45/02B82B 3/00B82Y 40/00C01F 17/241C01F 17/235
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Claims

Abstract

Particles of mixed metal oxide include at least two metal species. The particles have a grain size within the range of 1-100 nm. The particles are substantially crystalline. The particles contain only small or negligible amounts of amorphous material. The at least two metal species are uniformly dispersed in the particles.

Claims

exact text as granted — not AI-modified
1 - 20 . (Canceled)  
     
     
         21 . Particles of mixed metal oxide that include at least two metal species, said particles having a grain size within the range of 1-100 nm, wherein the particles are substantially crystalline and contain only small or negligible amounts of amorphous material and where the at least to metal species are uniformly dispersed in the particles.  
     
     
         22 . Particles according to  claim 21 , wherein the particles have disordered pore structures.  
     
     
         23 . Particles according to  claim 21 , wherein the particles exhibit a broad distribution of pore sizes.  
     
     
         24 . Particles according to  claim 21 , wherein the metal oxide is formed from a metal cation selected from the group consisting of metal cations from Groups 1A, 2A, 3A, 4A, 5A and 6A of the Periodic Table, transition metals, lanthanides and actinides, and mixtures thereof.  
     
     
         25 . Particles according to  claim 21 , wherein the grain size of the particles falls within the range of 1-50 nm.  
     
     
         26 . Particles according to  claim 25 , wherein the grain size of the particles falls within the range of 1-20 mn.  
     
     
         27 . Particles according to  claim 25 , wherein the grain size of the particles falls within the range of 1-10 nm.  
     
     
         28 . Particles according to  claim 25 , wherein the grain size of the particles falls within the range of 2-8 nm.  
     
     
         29 . Particles according to  claim 21 , wherein the particles are phase-pure.

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