Preparation method of 2-cyanopyridine catalyst
A cyanopyridine and catalyst technology, which is applied in the field of preparation of 2-cyanopyridine catalysts, can solve the problem that the yield of 2-cyanopyridine is only 61%, and achieve novel and unique preparation methods, ingenious ideas, and improved selectivity and the effect on yield
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[0021] Example 1
[0022] A preparation method of 2-cyanopyridine catalyst, the steps are as follows:
[0023] (1) Mix 3150g of titanium dioxide, 882g of alumina and 90g of succulent powder to obtain material A, and use a kneader to knead material A for 2h;
[0024] (2) 452.2g of oxalic acid, 456.75g of ammonium metavanadate, 270.4g of ammonium molybdate and 1050g of deionized water were stirred at 50°C and added dropwise with a concentration of 65% nitric acid to pH=3 to obtain material B, The material continued to stir for 1h at this temperature;
[0025] (3) 31.5g of oxalic acid, 42g of ammonium oxalate, 13.44g of antimony trioxide and 315g of deionized water were stirred at 60°C and added dropwise with a concentration of 65% nitric acid to pH=4 to obtain material C, Continue 1h at this temperature;
[0026] (4) the B material after the step (2) treatment is mixed with the C material after the step (3) treatment and stir for 20min;
[0027] (5) adding the B material and...
Example Embodiment
[0030] Example 2
[0031] A preparation method of 2-cyanopyridine catalyst, the steps are as follows:
[0032] (1) Mix 3150g of titanium dioxide, 882g of alumina and 90g of succulent powder to obtain material A, and use a kneader to knead material A for 2h;
[0033] (2) 452.2g of oxalic acid, 456.75g of ammonium metavanadate, 270.4g of ammonium molybdate and 1050g of deionized water were stirred at 50°C and added dropwise with a concentration of 65% nitric acid to pH=3 to obtain material B, The material continued to stir for 1h at this temperature;
[0034] (3) 31.5g of oxalic acid, 42g of ammonium oxalate, 13.44g of antimony trioxide and 315g of deionized water were stirred at 70°C and added dropwise with a concentration of 65% nitric acid to pH=4 to obtain material C, and material C was Continue 1h at this temperature;
[0035] (4) the B material after the step (2) treatment is mixed with the C material after the step (3) treatment and stir for 20min;
[0036] (5) adding...
Example Embodiment
[0039] Example 3
[0040] A preparation method of 2-cyanopyridine catalyst, the steps are as follows:
[0041] (1) Mix 3150g of titanium dioxide, 882g of alumina and 90g of succulent powder to obtain material A, and use a kneader to knead material A for 2h;
[0042] (2) 452.2g of oxalic acid, 456.75g of ammonium metavanadate, 270.4g of ammonium molybdate and 1050g of deionized water were stirred at 50°C and the concentration of 65% nitric acid was added dropwise to pH=3 to obtain material B. The material continued to stir for 1h at this temperature;
[0043] (3) 31.5g of oxalic acid, 42g of ammonium oxalate, 13.44g of antimony trioxide and 315g of deionized water were stirred at 70° C. and added dropwise with a concentration of 65% nitric acid to pH=4 to obtain C material, and C material Continue 1h at this temperature;
[0044] (4) the B material after the step (2) treatment is mixed with the C material after the step (3) treatment and stir for 20min;
[0045] (5) adding ...
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