公开(公告)号：US10407347B2

公开(公告)日：2019-09-10

申请号：US15901776

申请日：2018-02-21

申请人： National Technology & Engineering Solutions of Sandia, LLC

发明人： Timothy J. Boyle ,  Rana Chan ,  Jeremiah Matthew Sears ,  Bernadette A. Hernandez-Sanchez

IPC分类号： C04B35/16 ,  B01J13/06 ,  A61K41/00 ,  C07F7/02 ,  C07F7/28 ,  C04B35/626 ,  C04B35/64 ,  C07F9/00 ,  C07F7/08 ,  B01J13/02 ,  C01G27/02 ,  C04B35/628 ,  C08K3/36 ,  C08K3/22

摘要： The tris(trimethylsilyl)silanol (H-SST) ligand can be reacted with a Group 4 or 5 metal alkoxides in a solvent to form an SST-modified metal alkoxide precursor. Exemplary Group 4 precursors include [Ti(SST)2(OR)2] (OR=OPri, OBut, ONep); [Ti(SST)3(OBun)]; [Zr(SST)2(OBut)2(py)]; [Zr(SST)3(OR)] (OR=OBut, ONep); [Hf(SST)2(OBut)2]; and [Hf(SST)2(ONep)2(py)n] (n=1, 2), where OPri=OCH(CH3)2, OBut=OC(CH3)3, OBun=O(CH2)3CH3, ONep=OCH2C(CH3)3, and py=pyridine. Exemplary Group 5 precursors include [V(SST)3(py)2]; [Nb(SST)3(OEt)2]; [Nb(O)(SST)3(py)]; 2[H][(Nb(μ-O)2(SST))6(μ6-O)]; [Nb8O10(OEt)18(SST)2.⅕Na2O]; [Ta(SST)(μ-OEt)(OEt)3]2; and [Ta(SST)3(OEt)2]; where OEt=OCH2CH3. When thermally processed, the precursors can form unusual core-shell nanoparticles. For example, HfO2/SiO2 core/shell nanoparticles have demonstrated resistance to damage in extreme irradiation and thermal environments.

公开(公告)号：US20180179112A1

公开(公告)日：2018-06-28

申请号：US15901776

申请日：2018-02-21

申请人： National Technology & Engineering Solutions of Sandia, LLC

发明人： Timothy J. Boyle ,  Rana Chan ,  Jeremiah Matthew Sears ,  Bernadette A. Hernandez-Sanchez

IPC分类号： C04B35/16 ,  B01J13/06 ,  A61K41/00 ,  C07F7/02 ,  C07F7/28 ,  C07F9/00 ,  C04B35/626 ,  C04B35/64

CPC分类号： C04B35/16 ,  A61K41/00 ,  B01J13/02 ,  B01J13/06 ,  C01G27/02 ,  C01P2004/84 ,  C04B35/62605 ,  C04B35/62807 ,  C04B35/62821 ,  C04B35/62823 ,  C04B35/62892 ,  C04B35/64 ,  C04B2235/3244 ,  C04B2235/3418 ,  C04B2235/3427 ,  C04B2235/483 ,  C04B2235/5445 ,  C04B2235/656 ,  C04B2235/94 ,  C07F7/02 ,  C07F7/0836 ,  C07F7/28 ,  C07F9/00 ,  C08K3/22 ,  C08K3/36 ,  C08K2003/2296

摘要： The tris(trimethylsilyl)silanol (H-SST) ligand can be reacted with a Group 4 or 5 metal alkoxides in a solvent to form an SST-modified metal alkoxide precursor. Exemplary Group 4 precursors include [Ti(SST)2(OR)2] (OR=OPri, OBut, ONep); [Ti(SST)3(OBun)]; [Zr(SST)2(OBut)2(py)]; [Zr(SST)3(OR)] (OR=OBut, ONep); [Hf(SST)2(OBut)2]; and [Hf(SST)2(ONep)2(py)n] (n=1, 2), where OPri=OCH(CH3)2, OBut=OC(CH3)3, OBun=O(CH2)3CH3, ONep=OCH2C(CH3)3, and py=pyridine. Exemplary Group 5 precursors include [V(SST)3(py)2]; [Nb(SST)3(OEt)2]; [Nb(O)(SST)3(py)]; 2[H][(Nb(μ-O)2(SST))6(μ6-O)]; [Nb8O10(OEt)18(SST)2.⅕Na2O]; [Ta(SST)(μ-OEt)(OEt)3]2; and [Ta(SST)3(OEt)2]; where OEt=OCH2CH3. When thermally processed, the precursors can form unusual core-shell nanoparticles. For example, HfO2/SiO2 core/shell nanoparticles have demonstrated resistance to damage in extreme irradiation and thermal environments.