Preparation method of nano gadolinium oxide with grain size being 80-100nm

A nanometer gadolinium oxide, particle size technology, applied in chemical instruments and methods, nanotechnology for materials and surface science, nanotechnology, etc. problem, to avoid large agglomeration, good dispersibility, and good particle dispersibility.

Active Publication Date: 2019-01-15
CHANGZHOU GEOQUIN NANO NEW MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Ammonium bicarbonate or ammonium salt will produce a large amount of ammonia nitrogen wastewater, which will bring great difficulties to the wastewater standard; at the same time, the method of adding seed crystals must first obtain better seed crystals, and the preparation of seed crystals is difficult, and precipitation The process is not easy to control

Method used

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  • Preparation method of nano gadolinium oxide with grain size being 80-100nm
  • Preparation method of nano gadolinium oxide with grain size being 80-100nm
  • Preparation method of nano gadolinium oxide with grain size being 80-100nm

Examples

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Embodiment 1

[0025] This specific embodiment adopts the following technical scheme to prepare nano-gadolinium oxide powder with a particle size of 80-100 nm: the ambient temperature is controlled to 26° C. by an external temperature control device (which may be an air conditioner). Take a high-concentration gadolinium chloride solution, add pure water to dilute and prepare a gadolinium chloride solution with a concentration of 0.3mol / L, then put 91.95L of a gadolinium chloride solution with a concentration of 0.3mol / L into a septum reactor, and separate Circulating ice water was introduced into the jacket to control the temperature of the solution system in the jacketed reactor to 2°C. Then weigh 500 grams of polyethylene glycol 20000 and dissolve it with pure water to form 2L of solution, add it to the above-mentioned spacer reaction kettle, and after stirring for 30 minutes, evenly spray and drop the sodium bicarbonate solution with a concentration of 0.3mol / L and a temperature of 2°C In...

Embodiment 2

[0029] This specific embodiment adopts the following technical solution to prepare nano-gadolinium oxide powder with a particle size of 80-100 nm: the ambient temperature is controlled to 28° C. by an external temperature control device (which may be an air conditioner). Take a high-concentration gadolinium chloride solution, add pure water to dilute and prepare a gadolinium chloride solution with a concentration of 0.2mol / L, then put 275.86L of a gadolinium chloride solution with a concentration of 0.2mol / L into the reaction kettle with a septum, separate Circulating ice water was introduced into the jacket to control the temperature of the solution system in the jacket reactor to 0°C. Then weigh 1500 grams of polyethylene glycol 10000 and dissolve it with pure water to form a 6L solution, add it to the above-mentioned spacer reactor, stir for 30 minutes, and evenly spray and drop the sodium bicarbonate solution with a concentration of 0.2mol / L and a temperature of 0°C Into t...

Embodiment 3

[0033] This specific embodiment adopts the following technical solution to prepare nano-gadolinium oxide powder with a particle size of 80-100 nm: the ambient temperature is controlled to 27° C. by an external temperature control device (which may be an air conditioner). Take a high-concentration gadolinium chloride solution, add pure water to dilute and prepare a gadolinium chloride solution with a concentration of 0.1mol / L, and then put 441.38L of a gadolinium chloride solution with a concentration of 0.1mol / L into the spacer for reaction In the kettle, circulating ice water was passed through the spacer to control the temperature of the solution system at 3°C. Then weigh 960 grams of polyethylene glycol 10000 and dissolve it with pure water to form a solution of 3.84 L, add it to the above-mentioned spacer reaction kettle, and after stirring for 30 minutes, spray the sodium bicarbonate solution with a concentration of 0.4mol / L and a temperature of 3°C evenly. Add it to a sp...

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Abstract

The invention discloses a preparation method of nano gadolinium oxide with the grain size being 80-100nm. The preparation method comprises the following steps that a sodium bicarbonate solution with the concentration being 0.1mol/L-0.6mol/L and the temperature being 0-5 DEG C is added dropwise into a gadolinium chloride containing polyethylene glycol 10000 and/or polyethylene glycol 20000 at the speed of 3-6L/min, the mixed solution is continuously stirred for 0.5-1 hour after dropwise adding is completed, and then subjected to standing and ageing at the temperature of 0-5 DEG C, a mother solution containing sediment is prepared, wherein the temperature of the reaction system in the process is 0-5 DEG C, the operation environment temperature is maintained to be 26-28 DEG C, filtration andwashing are conducted then, the filtration washing means is that the product is dipped and washed in hot pure water with the temperature being 95 DEG C or above for a plurality of times, the filter cake after filtration and washing is placed for 24 hours or above at the temperature of 0-5 DEG C, and then burned for 1-2 hours at the temperature of 800-850 DEG C, and the nano gadolinium oxide with the grain size being 80-100nm is prepared.

Description

technical field [0001] The invention belongs to the technical field of nanometer powder, and in particular relates to a method for preparing nanometer gadolinium oxide with a particle diameter of 80-100nm. Background technique [0002] Gadolinium oxide is widely used in catalysis, ceramics, glass industry, solid oxide fuel cells, luminescent materials, polishing materials and nuclear materials and other fields. Gadolinium oxide can also be used as a main component in solid fuel cells. For the synthesis of nano-gadolinium oxide powder, the more common methods currently used are sol-gel method and chemical precipitation method. "Synthesis and Characterization of Conductive Polyaniline Micro-Nano Gadolinium Oxide Composite Materials", Zhang Lixia et al., Journal of Guangxi Normal University (Natural Science Edition), 2007, 66-68, prepared micro-nano-scale gadolinium oxide flaky powder by chemical precipitation method , but the prepared powder is easy to agglomerate, and the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F17/00B82Y30/00
CPCB82Y30/00C01F17/206C01P2004/03C01P2004/64C01P2006/12
Inventor 王鹭
Owner CHANGZHOU GEOQUIN NANO NEW MATERIALS
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