Templated, layered manganese phosphate

Details Templated, layered manganese phosphate Templated, layered manganese phosphate

2002-06-18

2004-08-17

Langel, Wayne A. (Department: 1754)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

C423S311000

Reexamination Certificate

active

06777568

ABSTRACT:

BACKGROUND OF THE INVENTION
The invention describes a templated, layered manganese phosphate, and, more particularly, a layered manganese phosphate synthesized using tris(2-aminoethyl)amine as a template.
Manganese compounds are well known and are used in a variety of oxidative reactions. Manganese has stable oxidation states of +4, +3 and +2, allowing the effective use of manganese oxide. Manganese compounds can have layered structures or three-dimensional microporous structures. Manganese phosphate materials have been formed as crystalline structures, generally by hydrothermal synthesis (see Lewis, U.S. Pat. No. 5,780,003 and Lewis, U.S. Pat. No. 6,156,931). A variety of other metal phosphate compounds have been prepared, including aluminophosphates, gallophosphates, and tin phosphates.
These compounds are sometimes prepared using an organic molecule as a template to form an organo-metal phosphate compound. Escobal et al. (J. Escobal, J. Pizarro, J. Mesa, L. Lezama, R. Olazcuaga, M. Arriortua, and T. Rojo, Chem. Mater., 2000, 12, 376-382) describe a manganese phosphate compound templated by ethylenediamine. Serre et al. (C. Serre, F. Taulelle, and G. Ferey, Solid State Sciences, 2001, 3, 623-632) describe a zirconium phosphate compound, also templated by ethylenediamine. A variety of researchers have formulated other organo-metal phosphate compounds using tris(2-aminoethyl)amine (TREN) as the organic template. Simon et al. (N. Simon, T. Loiseau, and G. Ferey, Solid State Sciences, 2, 2000, 389-395) and Xu et al. (Y. Xu, B. Zhang, X. Chen, S. Liu, C. Duan, and X. You, J. of Solid State Chemistry, 1999, 145, 220-226) describe an alumino-phosphate compound using TREN as the template. Serpaggi et al. (F. Serpaggi, T. Loiseau, and G. Ferey, Acta Crystallographica Section C, 1997, C53, 1568-1570) describe a gallium-phosphate compound using TREN as the template. Ayyappan et al. (S. Ayyappan, A. Cheetham, S. Natarajan, and C. Rao, J. of Solid State Chemistry, 1998, 139, 207-210) describe a tin-phosphate compound using TREN as the template. These compounds have different structures and potentially different applications because of those structural differences.


REFERENCES:
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Escobal, et al, “A New Manganese(II) Phosphate Templated by Ethylenediamine: (C2H10N2)[Mn2(HPO4)3(H2O]. Hydrothermal Synthesis, Crystal Structure, and Spectroscopic and Magnetic Properties”, Chem. Mater, (2000), 12, 376-382.
Serre, et al., “Synthesis and characterization of MIL-43 and MIL-44, two new layered templated tetravalent phosphates: Zr(PO4)2N2C2H10and Ti2(PO4)2(HPO4)2N2C2H10”, Solid State Sciences 3 (2001), 623-632.
Simon, et al., “Synthesis and crystal structure of MIL-32: a new chiral layered aluminophosphate templated with non chiral tris (2-aminoethyl)amine: Al3(PO4)4, N4C6H21, H2O”, Solid State Sciences 3 (2000), 389-395.
Yao-Hua Xu, et al., “An Open Framework Aluminophosphate with Unique 12-Membered Ring Channels: Al9(PO4)12(C24H91N16) 17 H2O”, Journal of Solid State Chemistry 145, (1999), 220-226.
Serpaggi, et al., “A New Gallium Phosphate Templated by Tris(2-aminoethyl)amine: [Ga(HPO4)(PO4(OH)][(C2H7N)3N] H2O”,Acta Cryst.(1997), C52, 1568-1570.
S. Ayyappan, et al., “A Novel Monomeric Tin(II) Phosphate,[N(C2H5NH3)3]3+[Sn(PO4)(HPO4)]3−4H4O, Connected through Hydrogen Bonding,” Journal of Solid State Chemistry 139, (1998), 207-210.
Simon, et al., “Synthesis and crystal structure of MIL-27: a new oxyfluorinated three-dimensional framework metallophosphate obtained with aluminum in four, five and sixfold coordination and templated with the tris (2-aminoethyl)amine”, Solid State Sciences t. 1 (1999), 339-349.

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