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Preparation method of barium pyrophosphate

A technology of barium pyrophosphate and barium hydrogen phosphate, applied in the field of preparation of barium pyrophosphate, can solve problems such as complicated preparation process and unclear intermediate products, and achieve the effects of increasing acquisition channels and reducing preparation costs

Pending Publication Date: 2022-06-10
贵州胜威凯洋化工有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing barium pyrophosphate, which solves the problems of complicated preparation process and unknown intermediate products

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  • Preparation method of barium pyrophosphate
  • Preparation method of barium pyrophosphate
  • Preparation method of barium pyrophosphate

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Embodiment Construction

[0028] The technical solutions in the practical invention examples of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0029] A kind of preparation method of barium pyrophosphate of the present invention, preparation method comprises the following steps:

[0030] Step 1: adding barium carbonate to the beaker, then adding phosphoric acid for heating and stirring, and obtaining barium hydrogen phosphate by precipitation;

[0031] Step 2: Add Ba(OH) to the beaker 2 ·8H 2 O solution, add phosphoric acid again and carry out heating and stirring, and precipitation obtains barium hydrogen phosphate;

[0032] Step 3: Add BaCl 2H to the beaker 2 ...

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Abstract

The invention discloses a preparation method of barium pyrophosphate, and relates to the technical field of chemical synthesis research. The preparation method comprises the following steps: 1, adding barium carbonate into a beaker, adding phosphoric acid, heating and stirring, and precipitating to obtain barium hydrogen phosphate; 2, adding a Ba (OH) 2.8 H2O solution into the beaker, adding phosphoric acid, heating and stirring, and precipitating to obtain barium hydrogen phosphate; 3, BaCl. 2H2O is added into the beaker to prepare a solution, NaH2PO4. 2H2O is prepared into a solution, heating and stirring are carried out, and barium hydrogen phosphate is obtained after precipitation; and 4, calcining the prepared barium hydrogen phosphate in a muffle furnace at a temperature of 700 DEG C or above for 20 min or above to obtain barium pyrophosphate. According to the preparation method of barium pyrophosphate, phosphoric acid is used as a phosphorus source, barium hydrogen phosphate is prepared from phosphoric acid and barium sources such as barium salt and barium alkali, and then high-temperature dehydration is performed to obtain the synthesis route of barium pyrophosphate, so that the preparation process of barium pyrophosphate can be more clearly controlled.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis research, in particular to a preparation method of barium pyrophosphate. Background technique [0002] Barium pyrophosphate is a new type of barium-containing phosphorus-containing compound. It has special application effects due to its unique chemical properties. For example, in the production process of calcium phosphate ceramics, when a little pyrophosphoric acid is added to the raw material, its resistance Bending strength, adding barium pyrophosphate as a catalyst in the synthesis of triethylenediamine can improve the mechanical strength of the catalyst and prolong the life of the catalyst. In the preparation of 2,3-pentanedione, using barium pyrophosphate as a carrier has a good effect. Another study found that barium pyrophosphate may be a promising blue-emitting phosphor for near-ultraviolet light-emitting diodes. [0003] The existing barium pyrophosphate preparation method is...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/42
CPCC01B25/42C01P2002/72
Inventor 李海艳周骏宏马磊韩维玲王祥碧郭正仙王照清梁馨亓武玉蓉张冬城
Owner 贵州胜威凯洋化工有限公司
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