High-temperature-resistant nitrification inhibitor as well as preparation method and application thereof
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A technology of nitrification inhibitor and high temperature resistance, which is applied in application, agricultural gas emission reduction, fertilizer mixture, etc. It can solve the problems of unusable, low environmental pollution, and high temperature resistance, and achieve low cost, low environmental pollution, and stability Good results
Active Publication Date: 2020-11-17
山东艾科农业科技有限公司
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The nitrification inhibitor prepared by the invention has good stability, less residue in agricultural products, less toxicity, less environmental pollution, can effectively reduce the leaching and denitrification loss of nitrogen fertilizers, and inhibit the conversion of ammonium nitrogen to nitrate nitrogen in nitrogen fertilizers , improve nitrogen utilization rate, and at the same time have the functions of dissolving phosphorus and preventing phosphorus from being fixed by the soil; the nitrification inhibitor prepared by the present invention also has high temperature resistance characteristics, and can participate in the preparation process of high-tower fusion granulation compound fertilizer to improve the high-tower fusion granulation. The comprehensive performance of granulated compound fertilizer solves the problem that the traditional nitrification inhibitors are not resistant to high temperature and cannot be used for high-tower granulation
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Embodiment 1
[0035] A high temperature resistant nitrification inhibitor, the steps are as follows:
[0036] Step 1: Add 200g distilled water, 20g calcium silicate and 27g mass concentration of 98% hydrochloric acid aqueous solution to the reaction kettle with temperature sensor and stirrer, mix and disperse evenly, and heat it from Room temperature rises to 80°C;
[0037] Step 2: Add 60g of acrylic acid and 45g of 3,4-dimethylpyrazole to the system of Step 1, mix and disperse evenly;
[0038] Step 3: slowly add 9g composite initiator (ammonium persulfate / ammonium bicarbonate / tert-butyl peroxybenzoate, ammonium persulfate, ammonium bicarbonate and tert-butyl peroxybenzoate) in step (two) system The molar ratio is 1:1:1); then react at 80°C for 2h, and finally cool down to collect the product. The above reactions do not require additional introduction of protective gas.
[0039] The nitrification inhibitor prepared in this example was tested by gel permeation chromatography, and its numb...
Embodiment 2
[0043] A high-temperature-resistant nitrification inhibitor, as described in Example 1, the difference is: the heating rate in step 1 is 1°C / min, and the heating temperature is 40°C, and other steps and conditions are the same as in Example 1.
Embodiment 3
[0045] A high temperature resistant nitrification inhibitor, as described in Example 1, the difference is: the quality of the composite initiator, calcium silicate, hydrochloric acid, 3,4-dimethylpyrazole, acrylic acid, distilled water is respectively 11g, 44g, 35g, 63g, 76g and 400g; other steps and conditions are the same as in Example 1.
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Abstract
The invention provides a high-temperature-resistant nitrification inhibitor as well as a preparation method and application thereof. The nitrification inhibitor is prepared from the following raw materials in parts by weight through reaction: 0.5-1.5 parts of a compound initiator, 1-10 parts of silicate, 3-15 parts of inorganic acid, 2-10 parts of a pyrazole derivative, 5-15 parts of organic acidcontaining carbon-carbon double bonds and 20-50 parts of solvent water. The preparation method is simple, efficient, free of pollution and low in cost, extra inert protective gas does not need to be injected, potential risks in the industrial production process are reduced, and the cost is further reduced. The nitrification inhibitor is good in stability, less in residue in agricultural products,small in toxicity, low in environmental pollution and capable of effectively improving the nitrogen utilization rate, and has the effects of dissolving phosphorus, preventing phosphorus from being fixed by soil and the like. The nitrification inhibitor also has the characteristic of high temperature resistance and can participate in the preparation process of a high-tower melt granulation compoundfertilizer, so that the comprehensive performance of the high-tower melt granulation compound fertilizer is improved.
Description
technical field [0001] The invention relates to a high-temperature-resistant nitrification inhibitor, a preparation method and application thereof, and belongs to the technical field of agricultural fertilizers. Background technique [0002] China is a large agricultural country, and a large number of crops are planted on China's vast land. In order to improve the yield and quality of crops and meet the national demand for high-quality agricultural products, new fertilizers and various auxiliaries with multiple functions and environmental friendliness have been continuously developed, and crop cultivation and growth management have also received continuous attention. At present, the compound fertilizer produced by high-tower fusion granulation not only retains the performance of the original fertilizer, but also incorporates elements needed for crop growth such as nitrogen, phosphorus, and potassium, so it occupies an increasing share in the agricultural market. In order to...
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