Preparing method of organic carboxylic acid amide
The technology of an organic carboxylic acid amide and a production method is applied in the preparation of carboxylic acid amide, the preparation of organic compounds, organic chemistry, etc., which can solve the problems of increasing the complexity of catalyst preparation and reaction operations, low catalytic activity, etc., and achieves maintaining reaction selection. rate, improve catalytic activity, and increase the effect of dispersibility
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Embodiment 1
[0029] (1) Preparation of catalyst
[0030] Mix 21.11 grams of potassium permanganate, 8.647 grams of cobalt oxide, 33.76 grams of manganese sulfate, 14 grams of concentrated sulfuric acid aqueous solution, and 270 grams of deionized water in a 500 ml three-necked bottle, and react at a reaction temperature of 70 ° C for 3 hours. Suction and filtration, rinse with deionized water, and dry in a vacuum oven to obtain the required MnO 2 / Co 3 o 4 (Mn / Co molar ratio=1) catalyst.
[0031] (2) Hydrolysis reaction test
[0032] 15 grams (0.176 moles) of 2-hydroxyisobutyronitrile, 10 grams (0.172 moles) of acetone, 35 grams (1.944 moles) of deionized water, and 11.537 grams (0.069 moles Mn) of MnO 2 / Co 3 o 4 The catalyst was placed in a 250 ml three-necked bottle, and the reaction was carried out in batch operation by the reflux method, the reaction temperature was 60° C., and the rotation speed was 400 rpm. Samples were taken when reacting for 3 hours and 5 hours, and the produ...
Embodiment 2-7
[0037] (1) Preparation of catalyst
[0038] The cobalt oxide in Example 1 was replaced by other metal oxides listed in Table 2, wherein the molar ratio of manganese to each metal was 1, and each catalyst was prepared by the same catalyst preparation method as in Example 1.
[0039] (2) Hydrolysis reaction test
[0040] Take MnO containing 0.069 moles of Mn 2 / MO x (Mn / M molar ratio=1) catalyst, the hydrolysis reaction test was carried out in the same manner as in Example 1, and the results were recorded in Table 2.
[0041] Table 2
[0042]
[0043]
[0044] The experimental results in Table 2 show that various metal oxides can be used as supports for manganese dioxide catalysts and maintain a certain level of reactivity.
Embodiment 8-9
[0046] (1) Preparation of catalyst
[0047] The amount of cobalt oxide added in Example 1 was changed so that the molar ratios of manganese and cobalt were 0.5 and 0.2 respectively, and the catalyst was prepared by the same catalyst preparation method as in Example 1.
[0048] (2) Hydrolysis reaction test
[0049] Take MnO containing 0.069 moles of Mn 2 / Co 3 o 4 Catalyst, carry out hydrolysis reaction test in the same manner as Example 1, and record the result in Table 3.
[0050] table 3
[0051]
[0052] The experimental results in Table 3 show that the addition amount of metal oxide can affect the overall MnO 2 / MO x Catalyst reactivity.
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