Rod-shaped zirconium phosphate and preparation method thereof
A zirconium phosphate, rod-shaped technology, used in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., can solve problems such as short time, low reaction temperature, and long reaction time
Inactive Publication Date: 2013-03-27
SHANGHAI NAT ENG RES CENT FORNANOTECH
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Problems solved by technology
[0004] In view of the disadvantages of harsh reaction conditions such as the use of a large amount of concentrated phosphoric acid or strongly corrosive hydrofluoric acid, high reaction temperature and long reaction time in the traditional zirconium phosphate preparation process, the present invention proposes the use of oxalic acid and ethylenediamine as reaction accelerators, phosphoric acid A method for preparing zirconium phosphate under isothermal conditions with less dosage, low reaction temperature, and short time. The present invention is also characterized in that the prepared zirconium phosphate is rod-shaped, and can be used in the fields of catalysis, ion exchange, etc., especially as a antimicrobial carrier
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Embodiment 1
[0015] 16.1g of zirconium oxychloride octahydrate, 25.2g of oxalic acid, 4.9g of phosphoric acid and 13.5g of ethylenediamine were added sequentially in 350ml of deionized water, stirred and reacted at 30°C for 3h at a stirring rate of 250rpm, and finally filtered by suction , washed, and dried at 80°C to obtain rod-shaped zirconium phosphate, such as figure 1 , the diameter of zirconium phosphate is about 500nm, and the aspect ratio is about 15.
Embodiment 2
[0017] 16.1g of zirconium oxychloride octahydrate, 25.2g of oxalic acid, 4.9g of phosphoric acid and 13.5g of ethylenediamine were added sequentially in 350ml of deionized water, stirred and reacted at 30°C for 6h at a stirring rate of 250rpm, and finally filtered by suction , washed, and dried at 80°C to obtain rod-shaped zirconium phosphate, such as figure 2 , the diameter of zirconium phosphate is about 750nm, and the aspect ratio is about 10.
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Abstract
The invention relates to a rod-shaped zirconium phosphate and a preparation method thereof. The diameter of the rod-shaped zirconium phosphate is 0.4-1.0mum, and a length-diameter ratio is 5-20. The preparation method comprises the specific steps that: certain amounts of zirconium oxychloride octahydrate, oxalic acid, phosphoric acid and ethylenediamine are sequentially added in deionized water; a reaction is carried out under stirring; and pump-filtration, washing, and drying are carried out, such that the rod-shaped zirconium phosphate is obtained. a molar ratio of zirconium oxychloride octahydrate to oxalic acid to phosphoric acid to ethylenediamine is 1: a: 1: b. a corresponds to a molar ratio of oxalic acid, and is 3-5. b corresponds to a molar ratio of ethylenediamine, and is 3-5. a and b are integers or non-integers. The preparation method has the advantage of simple process, and uniform sizes of prepared rod-shaped zirconium phosphate. The rod-shaped zirconium phosphate can be applied in fields such that catalysis, ion exchange, and the like, and can be used as an antibacterial agent carrier.
Description
technical field [0001] The invention relates to a zirconium phosphate and a preparation method thereof, in particular to a rod-shaped zirconium phosphate and a preparation method thereof. The prepared rod-shaped zirconium phosphate can be applied to fields such as catalysis and ion exchange, and belongs to the technical field of inorganic materials and synthesis. technical background [0002] Zirconium phosphate has strong catalytic, adsorption and ion exchange properties, and is widely used in ion exchangers, especially as a carrier for silver-loaded antibacterial agents. There are three main methods for zirconium phosphate. One is the reflux method proposed by Clearfield in 1964. In this method, zirconium oxychloride octahydrate is dissolved in hydrochloric acid, a mixture of phosphoric acid and hydrochloric acid is added, and the reaction is refluxed for 1 to 7 days. Strong acid conditions are used in the medium, and the reaction time is long. The other is the direct pre...
Claims
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Inventor 洪月蓉赵斌陈超殷天惠何丹农
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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