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Zirconium glyphosate, preparation method and use thereof

A glyphosate, zirconium halide technology, applied in herbicides and algicides, chemical instruments and methods, chemicals for biological control, etc., can solve problems such as flushing, reducing drug efficacy, and water pollution, Achieve the effect of low equipment requirements, easy operation and high safety

Inactive Publication Date: 2011-02-09
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this method of direct spraying has some disadvantages. For example, the sprayed glyphosate is often washed into the river by the rain, which not only greatly reduces its efficacy, but also pollutes the water sources that human beings depend on for survival.
In addition, how to remove weeds in alkaline soil and effectively improve the alkaline soil environment has always been a difficult problem for Chinese and foreign scientists

Method used

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  • Zirconium glyphosate, preparation method and use thereof
  • Zirconium glyphosate, preparation method and use thereof
  • Zirconium glyphosate, preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A. Accurately weigh 3.03 grams of zirconyl chloride and dissolve in 31.37 milliliters of deionized water to form an aqueous solution of zirconyl chloride. Add 40% hydrofluoric acid to the aqueous solution of zirconyl chloride according to the ratio of fluorine to zirconium molar ratio of 10 aqueous solution;

[0033] B. Accurately weigh 3.18 grams of glyphosate and dissolve it in 350 ml of deionized water to form a glyphosate aqueous solution. Slowly add the zirconium oxychloride solution to the glyphosate solution under 60°C water bath and stirring until mixed A large amount of white flocculent precipitates appeared in the system, which continued to crystallize at 70°C for 10 hours. Centrifuge, wash the filter cake with deionized water until the filtrate is neutral, and dry at 70°C to obtain the zirconium glyphosate product.

[0034] The X-ray diffraction analysis of the synthesized sample and the schematic diagram of its structure are shown in figure 1 , Infrared ab...

Embodiment 2

[0036] A. Accurately weigh 1.52 grams of zirconyl chloride and dissolve it in 15.68 milliliters of deionized water to form an aqueous solution of zirconyl chloride, and add 40% hydrofluoric acid to the aqueous solution of zirconyl chloride according to the molar ratio of fluorine to zirconium of 15 aqueous solution.

[0037] B. Accurately weigh 1.59 g of glyphosate and dissolve it in 175 ml of deionized water to form a glyphosate aqueous solution. Slowly add the zirconium oxychloride solution to the glyphosate solution under 90°C water bath and stirring until mixed A large amount of white flocculent precipitates appeared in the system, which continued to crystallize at 90°C for 4 hours, centrifuged, washed the filter cake with deionized water until the filtrate was neutral, and dried at 70°C to obtain the glyphosate zirconium product.

[0038] The molecular structure composition of the synthesized sample is the same as that of Example 1, and the crystal X-ray diffraction spect...

Embodiment 3

[0040] A. Accurately weigh 6.06 grams of zirconyl chloride and dissolve it in 62.74 milliliters of deionized water to form a zirconyl chloride aqueous solution. Add 40% hydrofluoric acid to the zirconyl chloride aqueous solution according to the molar ratio of fluorine to zirconium of 20 aqueous solution.

[0041] B. Accurately weigh 6.36 grams of glyphosate and dissolve it in 700 ml of deionized water to form a glyphosate aqueous solution. Slowly add the zirconium oxychloride solution to the glyphosate solution under the condition of 70°C water bath and stirring until mixed A large amount of white flocculent precipitates appeared in the system, which continued to crystallize at 70°C for 8 hours. Centrifuge, wash the filter cake with deionized water until the filtrate is neutral, and dry at 50°C to obtain the zirconium glyphosate product.

[0042] The molecular structure composition of the synthesized sample is the same as that of Example 1, and the crystal X-ray diffraction ...

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Abstract

The invention provides a glyphosate zirconium, a method for preparing the same and application thereof. The molecular structural formula of the glyphosate zirconium is Zr(O3PCH2NHCH2COOH) 2.0.5H2O, which is a spatulate crystal with the layer space of 16.45 angstroms. The glyphosate zirconium has good thermal stability below 250 DEG C, and when the glyphosate zirconium is heated to above 250 DEG C, a laminated framework of the glyphosate zirconium begins to collapse, and is transformed into a stable zirconium pyrophosphate gradually. The glyphosate zirconium decomposes in an alkaline environment and slowly releases glyphosate which can be used as herbicide for an alkaline farmland. The preparation method uses readily-available synthesis raw materials, is simple to operate, and has low requirements on equipment and high safety.

Description

technical field [0001] The invention relates to a compound and its preparation method and application, in particular to glyphosate zirconium and its preparation method and application. Background technique [0002] Zirconium phosphate compounds are a class of multifunctional materials, Zr(HPO 4 ) 2 ·H 2 O (abbreviated as α-ZrP) is the most representative. It was first synthesized by Clearfield and Stynes ​​in 1964, and its structure and properties have also been studied earlier. Later, a large number of α-ZrP derivative compounds (metal or metal oxide pillared α-ZrP and α-zirconium organic phosphonate, etc.) were synthesized. But there is no report about zirconium glyphosate and its synthesis method. [0003] α-ZrP and its derivatives are layered materials, and the force between layers comes from hydrogen bonds or van der Waals forces. The interlayer spacing of this type of compound can be adjusted by embedding some organic (inorganic) groups by ion exchange or by linki...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F9/38A01P13/00
Inventor 徐庆红张雅卿袁苑
Owner BEIJING UNIV OF CHEM TECH