Method for producing carbonyl compounds
A technology for carbonyl compounds and ruthenium compounds, applied in the field of preparation of carbonyl compounds, can solve the problems of low catalyst activity and inability to obtain reactions, etc.
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Embodiment 1
[0044] Into a SUS autoclave with a capacity of 500 mL, 40.6 g of ruthenium tris(acetylacetonate) and 225.1 g of trioctylphosphine 6 times the mole were charged, hydrogen gas was introduced at a hydrogen pressure of 0.8 MPa, and the mixture was heated at 150° C. for 3 hours. Preparation of ruthenium complex catalyst.
[0045] Add 70.31 g of 1,4-butanediol and 30.1 g of γ-butyrolactone to a 300-mL four-neck flask equipped with a stirrer, a condenser, a temperature measuring instrument and a sampling port, and raise the temperature to 205°C. Then, 2.65 g of the aforementioned ruthenium complex catalyst (concentration of ruthenium metal: 1000 ppm by weight) was added, followed by heating and stirring at 203° C. for 5 hours. Measure the 1,4-butanediol conversion rate of the reaction solution, the selectivity of γ-butyrolactone, the amount of addition product of trioctylphosphine and γ-butyrolactone, and the weight ratio of the addition product in the reaction solution . The resul...
Embodiment 2
[0047] Except that the trioctylphosphine of 6 times of moles is changed into 4 times of moles to prepare the catalyst, and the ruthenium complex catalyst 2.65g used in the reaction is changed into 1.78g, other operations are the same as in Example 1, and the ruthenium complex catalyst is prepared Catalyst and dehydrogenation reaction. Measure the 1,4-butanediol conversion rate of the obtained reaction solution, the selectivity of γ-butyrolactone, the amount of addition product of trioctylphosphine and γ-butyrolactone, and the weight ratio of the addition product in the reaction solution . The results are shown in Table 1.
Embodiment 3
[0049] Except that the trioctylphosphine of 6 times of moles is changed into 2 times of moles to prepare the catalyst, and the ruthenium complex catalyst 2.65g used in the reaction is changed into 0.90g, other operations are the same as in Example 1, and the ruthenium complex catalyst is prepared Catalyst and dehydrogenation reaction. Measure the 1,4-butanediol conversion rate of the obtained reaction solution, the selectivity of γ-butyrolactone, the amount of addition product of trioctylphosphine and γ-butyrolactone, and the weight ratio of the addition product in the reaction solution . The results are shown in Table 1.
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