Lanthanum stannate, europium stannate and its composite stannate nanopowder synthesis method

A technology of composite stannate and nanopowders, which is applied in the fields of tin compounds, chemical instruments and methods, rare earth metal compounds, etc., and can solve problems such as public reports of composite stannate nanopowders that have not yet been seen.
CN1951822AInactive Publication Date: 2007-04-25ZHEJIANG SCI-TECH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG SCI-TECH UNIV
Publication Date
2007-04-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a synthesizing method of lanthanum stannate, europium stannate and composite stannate nanometer powder, which comprises the following steps: dissolving lanthanum stannate and europium stannate with different molar rates or lanthanum stannate or europium stannate in the deionized water; stirring; adding sodium stannate or potassium stannate with the molar weight as the sum of lanthanum stannate and europium stannate in the solution; stirring; putting terminal solution into high-pressure autoclave; setting the filling density at 80-90%; disposing for 4-30h within 180-250 deg.c through hot water; centrifuging the disposed solution; cleaning; drying the product; obtaining the product with diameter at 15-35nm. The molecular formula of the product is La2-xEuxSn2O7 (x=02), which produces single and one-phase product.
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Description

technical field

[0001] The invention relates to a method for synthesizing lanthanum stannate, europium stannate and composite stannate nanopowder. Background technique

[0002] Pyrochlore-type oxides are a series of molecular formula A 2 B 2 o 7 The oxygen-containing compound, wherein A is a divalent or trivalent cation, and B is a tetravalent or pentavalent cation. Due to their excellent thermal, electrical, magnetic and catalytic properties, these compounds have been receiving special attention. Rare earth stannate is an important class of pyrochlore-type oxides, the molecular formula is RE 2 sn 2 o 7 (RE=Y, La-Lu). Recent studies have shown that rare earth stannates have potential applications in lithium batteries, catalysis, photoluminescence, ion conductors, and radiation protection. Due to the high melting point of rare earth stannates (>2000°C), they can be used as high-temperature catalysts and have unique applications in the treatment and control of autom...

Claims

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