The system W Ⅵ H 2O 2 has good selectivity for methoxyacetone in oxidation of 1 methoxy 2 propanol. The effects of acid and base additives on selectivity for methoxyacetone were studied. The results showed that the a...The system W Ⅵ H 2O 2 has good selectivity for methoxyacetone in oxidation of 1 methoxy 2 propanol. The effects of acid and base additives on selectivity for methoxyacetone were studied. The results showed that the acid additive, i.e. NaHSO 4, was favorable to Na 2WO 4 H 2O 2 system, while the base additive NEt 3 was favorable to other tungsten compounds. A 71 2% of yield of methoxyacetone with 98 9% of selectivity for methoxyacetone was obtained in Na 2WO 4 H 2O 2 NaHSO 4 MeCOMe oxidation system.展开更多
采用水热法制备混合价态的钒磷氧催化剂,并对其进行x射线衍射仪表征。以H2O2为氧化剂,考察该催化剂对1-甲氧基-2-丙醇催化氧化合成1-甲氧基-2-丙酮的催化活性,通过实验,确定了最佳反应条件:反应温度70℃,反应时间7 h,1-甲氧基-2-丙醇1 m...采用水热法制备混合价态的钒磷氧催化剂,并对其进行x射线衍射仪表征。以H2O2为氧化剂,考察该催化剂对1-甲氧基-2-丙醇催化氧化合成1-甲氧基-2-丙酮的催化活性,通过实验,确定了最佳反应条件:反应温度70℃,反应时间7 h,1-甲氧基-2-丙醇1 m L,催化剂0.1 g,H2O2 15.2 m L时,1-甲氧基-2-丙醇转化率为86.9%,1-甲氧基-2-丙酮选择性为33.2%及收率为20.7%。展开更多
文摘The system W Ⅵ H 2O 2 has good selectivity for methoxyacetone in oxidation of 1 methoxy 2 propanol. The effects of acid and base additives on selectivity for methoxyacetone were studied. The results showed that the acid additive, i.e. NaHSO 4, was favorable to Na 2WO 4 H 2O 2 system, while the base additive NEt 3 was favorable to other tungsten compounds. A 71 2% of yield of methoxyacetone with 98 9% of selectivity for methoxyacetone was obtained in Na 2WO 4 H 2O 2 NaHSO 4 MeCOMe oxidation system.
文摘采用水热法制备混合价态的钒磷氧催化剂,并对其进行x射线衍射仪表征。以H2O2为氧化剂,考察该催化剂对1-甲氧基-2-丙醇催化氧化合成1-甲氧基-2-丙酮的催化活性,通过实验,确定了最佳反应条件:反应温度70℃,反应时间7 h,1-甲氧基-2-丙醇1 m L,催化剂0.1 g,H2O2 15.2 m L时,1-甲氧基-2-丙醇转化率为86.9%,1-甲氧基-2-丙酮选择性为33.2%及收率为20.7%。