The preparation method of linalyl acetate
A technology of linalyl acetate and linalool, applied in the field of preparation of linalyl acetate, can solve the problems of low yield of terpineol acetate, low catalyst activity and the like, and achieve the effect of improving yield
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Embodiment 1
[0018] The preparation method of this linalyl acetate comprises the following steps:
[0019] Put 1000g of linalool and 800g of acetic anhydride into a reactor, then add 6g of catalyst under a nitrogen atmosphere, and heat to 100°C for 2 hours, then distill and wash under reduced pressure to obtain;
[0020] Wherein, the intake rate of nitrogen is 10ml / min;
[0021] The preparation method of described catalyst is:
[0022] A. Put 150g of zinc oxide and 100g of rare earth carbonate into 25% ammonia solution, alkalinize for 2 hours at normal temperature, and then wash until neutral;
[0023] B. Put the zirconia and rare earth carbonate treated in step A into 60% nitric acid solution respectively, acidify for 1 hour at normal temperature, and then wash to neutrality;
[0024] C. Put the zirconia and rare earth carbonate obtained after the treatment in step B into the solution prepared by mixing 30% hydrogen peroxide solution and silicotungstic acid in a ratio of 5:2 by mass, im...
Embodiment 2
[0028] The preparation method of this linalyl acetate comprises the following steps:
[0029] Put 1000g of linalool and 850g of acetic anhydride into a reactor, then add 5g of catalyst under nitrogen atmosphere, and heat to 110°C, react for 3 hours, then distill and wash under reduced pressure to obtain;
[0030] Wherein, the intake rate of nitrogen is 12ml / min;
[0031] The preparation method of described catalyst is:
[0032] A. Put 150g of zinc oxide and 100g of rare earth carbonate into 25% ammonia solution, alkalinize for 2 hours at normal temperature, and then wash until neutral;
[0033] B. Put the zirconia and rare earth carbonate treated in step A into 60% nitric acid solution respectively, acidify for 1 hour at normal temperature, and then wash to neutrality;
[0034] C. Put the zirconia and rare earth carbonate obtained after the treatment in step B into the solution prepared by mixing 30% hydrogen peroxide solution and silicotungstic acid in a ratio of 5:2 by mas...
Embodiment 3
[0038] The preparation method of this linalyl acetate comprises the following steps:
[0039] Put 1000g of linalool and 820g of acetic anhydride into the reactor, then add 8g of catalyst under nitrogen atmosphere, and heat to 120°C, react for 1 hour, then distill and wash under reduced pressure to obtain;
[0040] Wherein, the intake rate of nitrogen is 15ml / min;
[0041] The preparation method of described catalyst is:
[0042] A. Put 150g of zinc oxide and 100g of rare earth carbonate into 25% ammonia solution, alkalinize for 2 hours at normal temperature, and then wash until neutral;
[0043] B. Put the zirconia and rare earth carbonate treated in step A into 60% nitric acid solution respectively, acidify for 1 hour at normal temperature, and then wash to neutrality;
[0044] C. Put the zirconia and rare earth carbonate obtained after the treatment in step B into the solution prepared by mixing 30% hydrogen peroxide solution and silicotungstic acid in a ratio of 5:2 by ma...
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