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Preparation method of neodymium-doped barium iron phosphate

A technology doped with barium iron phosphate and neodymium, which is applied in chemical instruments and methods, phosphorus compounds, food preservation, etc. It can solve the problems of unseen technology or product reports or sales, and no discovery, etc., and achieve low production cost and low raw material price. The effect of sufficient and low production cost

Inactive Publication Date: 2012-09-19
张健
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After searching for published patents, Internet information, books, periodicals, magazines, market research, etc., no patent documents identical to the technical products of the present invention have been found, and no reports or sales of the technology or products of the present invention have been seen.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The preparation method of neodymium-doped barium iron phosphate of the present invention is characterized in that: the raw materials of its barium source, iron source, phosphate source, according to chemical formula Ba(FePO 4 ) 2 The mol ratio is measured; the doping element source is calculated according to the weight of the barium iron phosphate that can be theoretically generated, and the doping element is added in the range of 0.1-5% by weight; after mixing, in the ethanol medium, the speed is 200-800r / mimn High-speed ball milling for 15-20 hours, drying at 105-120°C to obtain the precursor, placing the dried precursor in a high-temperature furnace, and calcining at 300-450°C for 2-4 hours in a nitrogen atmosphere to obtain this product Invented neodymium-doped barium iron phosphate product;

[0012] The barium source is one of barium carbonate, barium hydroxide, barium chloride, barium nitrate, barium oxide, and barium sulfide; the iron source is ferrous oxalate, ...

Embodiment 2

[0015] Selection: barium carbonate (BaCO3) (99.8%), ferrous oxalate (FeC2O4.2H2O) (99.06%), diammonium hydrogen phosphate (NH4H2PO4) (98%) as raw materials; according to the chemical formula Ba(FePO 4 ) 2 The mol ratio metering; Doping element source, can generate barium iron phosphate by weight in theory, add doping element neodymium by 1% (percentage by weight) calculation, neodymium source is neodymium chloride (98%); After mixing, in In anhydrous ethanol medium, high-speed ball milling at a speed of 200-800r / mimn for 15-20h, and drying at 105-120°C to obtain a precursor, place the dried precursor in a high-temperature furnace, and heat it for 300 Calcining at -450°C for 2-4 hours to obtain the neodymium-doped barium iron phosphate product of the present invention.

Embodiment 3

[0017] Selection: barium carbonate (BaCO3) (99.8%), ferrous oxalate (FeC2O4.2H2O) (99.06%), diammonium hydrogen phosphate (NH4H2PO4) (98%) as raw materials; according to the chemical formula Ba(FePO 4 ) 2 The mol ratio is measured; the doping element source, according to the weight of the barium iron phosphate that can be generated theoretically, is calculated as 0.5% (weight percentage) to add the doping element neodymium, and the neodymium source is neodymium chloride (98%); after mixing, in In anhydrous ethanol medium, high-speed ball milling at a speed of 200-800r / mimn for 15-20h, and drying at 105-120°C to obtain a precursor, place the dried precursor in a high-temperature furnace, and heat it for 300 Calcining at -450°C for 2-4 hours to obtain the neodymium-doped barium iron phosphate product of the present invention.

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PUM

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Abstract

The invention provides a preparation method of neodymium-doped barium iron phosphate. The chemical formula of the barium iron phosphate is Ba(FePO4)2. The method comprises the following steps: metering raw materials of a barium source, an iron source, a phosphate radical source according to the mol ratio of the chemical formula Ba(FePO4)2; calculating and adding the doping element according to 0.1-5 wt% of the weight of the theoretically generated barium iron phosphate; and mixing, carrying out high-speed ball milling in an ethanol medium for 15-20 hours, drying at 105-120 DEG C to obtain a precursor, putting the dried precursor in a high temperature furnace, and carrying out high temperature calcination at 300-450 DEG C for 2-4 hours in a nitrogen atmosphere, thereby obtaining the product. The neodymium-doped barium iron phosphate is mainly used as a reducer, a deoxidizer, a food preservative, a raw material of electronic components and batteries, an additive in smelting and production of alloy and glass, and the like. The invention has the characteristics of sufficient raw materials, low cost, environmental protection, no pollution and the like.

Description

technical field [0001] The neodymium-doped barium iron phosphate of the invention belongs to a new material. Background technique [0002] At present, there are no reports and records of barium iron phosphate compounds. Through the retrieval of published patents, Internet information, books, periodicals, magazines, market research, etc., no patent documents identical to the technical products of the present invention have been found, nor have there been reports or sales of the technology or products of the present invention. Contents of the invention [0003] The object of the present invention is to propose a method for preparing neodymium-doped barium iron phosphate. [0004] The preparation method of neodymium-doped barium iron phosphate of the present invention is characterized in that: its chemical formula is: Ba(FePO 4 ) 2 , the raw materials of its barium source, iron source, and phosphate source, according to the chemical formula Ba(FePO 4 ) 2 The mol ratio is...

Claims

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Application Information

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IPC IPC(8): C01B25/45A23L3/3436H01M4/58
CPCY02E60/12Y02E60/10
Inventor 张健吴润秀王晶张雅静
Owner 张健