A kind of method for preparing ca2pbo4 powder by solid-phase synthesis
A solid-phase synthesis method and powder technology, which is applied in the field of Ca2PbO4 powder preparation, can solve the problems of poor environmental protection, high raw material cost, complex process, etc., and achieve the effects of convenient storage, optimized performance, and simple process
Active Publication Date: 2015-11-18
UNIV OF SCI & TECH BEIJING
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Problems solved by technology
Among the above methods, some require special equipment, and some have more complex processes, high raw material costs, poor environmental protection effect, and are not easy to popularize.
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Embodiment
[0015] Embodiment: This embodiment is a basic embodiment. A kind of preparation Ca with solid powder synthesis method 2 PbO 4 method, including the following steps:
[0016] Preparation: Weigh 5.0g of lead oxide or 7.5g of lead nitrate solid powder, 2.5-4.0g of calcium oxide or 7.7-11.6g of calcium nitrate solid powder, and grind them fully in an agate mortar to completely mix the two substances evenly. The mixed powder is placed in a corundum crucible for compaction, and the crucible is placed in a muffle furnace for high-temperature roasting at 600-800°C for 24 hours.
[0017] Purification: Grind the obtained product, sieve, ultrasonically wash 3~8 times with washing solution, each time for 2~10min, wash 5 times with deionized water, filter, and dry. Solid-liquid separation is carried out by vacuum filtration, and pure Ca is obtained after drying. 2 PbO 4 Powder.
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Abstract
The invention belongs to the technical field of powder preparation, and relates to a method for preparing Ca2PbO4 powder. The method comprises the steps of (1) mixing a calcium salt with a lead salt according to a certain proportion, fully grinding powder unit the components are uniformly mixed; (2) compacting the mixture in a corundum crucible, and then performing a high-temperature reaction in a muffle furnace; (3) grinding, screening, fully washing and purifying by using a cleaning solution, filtering to separate a product, washing the product with deionized water, and filtering and drying to obtain high-purity Ca2PbO4 powder. According to the method, synthetic raw materials are available and are low in price, the process is simple, the operation is convenient, the prepared Ca2PbO4 is uniform in crystal morphology, cube-shaped in appearance and complete in crystal form, and the purity of the Ca2PbO4 can reach more than 99%.
Description
Technical field [0001] The invention belongs to the field of powder materials, involving a CA 2 PBO 4 Preparation method of powder. Background technique [0002] According to superconducting material technology, it is a strategic high -tech with strategic significance in the 21st century. As the only superconducting superconducting materials at present, superconducting materials have a profound impact on the science and technology of contemporary society.CA 2 PBO 4 It is an important component in the superconducting material of the 铋 是. It is formed in the early stage of the heating process of the superconducting powder.In the process, it plays an important role (Yang Xiaopeng et al.. In the early stage of thermal treatment, the African phase TEM research in the BSCCO zone [J]. Rare metal materials and engineering. 2013, 37 (4): 142-145).Therefore, prepare a high -purity CA 2 PBO 4 It is of great significance to study its specific role in the preparation of the 铋 对于 superconducti...
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IPC IPC(8): C01G21/22
Inventor 李建强侯川路颖雷越张晓刘小琳陈辰
Owner UNIV OF SCI & TECH BEIJING