Automotive urea for preventing generation of urea biuret, cyanuric acid and melamine intermediate products and preparation method thereof
A technology of cyanuric acid and melamine, which is used in the preparation of urea derivatives, the preparation of organic compounds, chemical instruments and methods, etc. The effect of large conversion rate, improved conversion rate, and improved conversion rate
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Embodiment 1
[0026] Embodiment 1: A kind of vehicle urea that prevents urea biuret, cyanuric acid and melamine intermediate product from generating, described urea comprises following components by weight, 10 parts of urea, 19 parts of ammonium sulfate, 4 parts of ethanolamine, alkane 0.5 part of glucoside, 100 parts of ultrapure water, and 0.8 part of nanocatalyst; wherein, the preparation method of nanocatalyst is as follows:
[0027] 1) Take ammonium metavanadate and citric acid of equal mass, prepare a solution with a mass fraction of 1.0% with deionized water, add 0.50% sodium metaaluminate according to the mass of the solution, and add nano-scale WO during the stirring process 3 / TiO 2 The mixture powder was ultrasonically oscillated for 45 minutes, put into a temperature-controlled electric furnace and roasted at a high temperature of 560°C for 2 hours, then cooled naturally to room temperature, and then frozen at -5°C for 30 minutes;
[0028] 2) The material obtained in step 1) wa...
Embodiment 2
[0036] Embodiment 2: the difference with embodiment 1 is:
[0037] A kind of urea for vehicles that prevents the generation of urea biuret, cyanuric acid and melamine intermediate products, the urea includes the following components by weight, 13 parts of urea, 23 parts of ammonium sulfate, 7 parts of ethanolamine, 1.5 parts of alkyl glucoside 1 part, 100 parts of ultrapure water, 1 part of nano-catalyst; Wherein, the preparation method of nano-catalyst is as follows:
[0038] 1) Take ammonium metavanadate and citric acid of equal mass, prepare a solution with a mass fraction of 1.0% with deionized water, add 0.45% sodium metaaluminate according to the mass of the solution, and add nano-scale WO during the stirring process 3 / TiO 2 The mixture powder was ultrasonically oscillated for 20 minutes, put into a temperature-controlled electric furnace and roasted at a high temperature of 550°C for 1.5 hours, then cooled naturally to room temperature and then frozen at -5°C for 20 m...
Embodiment 3
[0047] Embodiment 3: the difference with embodiment 1 is:
[0048] A kind of urea for vehicles that prevents the formation of urea biuret, cyanuric acid and melamine intermediate products, the urea includes the following components in parts by weight: 10-13 parts of urea, 19-23 parts of ammonium sulfate, and 4-7 parts of ethanolamine , 0.5 to 1.5 parts of alkyl glucoside, 100 parts of ultrapure water, and 0.8 to 1 part of nanocatalyst; wherein, the preparation method of nanocatalyst is as follows:
[0049] 1) Take ammonium metavanadate and citric acid of equal mass, prepare a solution with a mass fraction of 0.9-1.0% with deionized water, add 0.45-0.50% sodium metaaluminate according to the mass of the solution, and add nano-scale WO 3 / TiO 2 The mixture powder is ultrasonically oscillated for 20-45 minutes, put into a temperature-controlled electric furnace and roasted at a high temperature of 550-560°C for 1.5-2 hours, then naturally cooled to room temperature and then fro...
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