摘要
The four heteropoly isomers K6[α-,βi-SiW11ZrO40]·XH2O（βi=β1,β2,β3） were prepared and characterized by elemental analysis,IR and UV spectroscopy,polargraphy and cyclic voitarnmetry,and183WNMR.The order of polarographic half-wave:β2>β1>β3>α,and these compounds can catalyze epoxidation reaction of olefine.The catalytic activity of β isomer is higher than α.
The four heteropoly isomers K_6[α-,βi-SiW_(11)ZrO_(40)]·XH_2O(β_i=β_1,β_2,β_3) were prepared and characterized by elemental analysis,IR and UV spectroscopy,polargraphy and cyclic voitarnmetry,and^(183)WNMR.The order of polarographic half-wave:β_2>β_1>β_3>α,and these compounds can catalyze epoxidation reaction of olefine.The catalytic activity of β isomer is higher than α.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2004年第4期502-504,共3页
Chemical Research and Application
基金
国家自然科学资金资助项目
黑龙江省骨干教师基金资助
关键词
十一钨锆杂多酸盐
异构体
催化活性
undecatungstozircoheteropoly compounds
heteropoly isomer
catalytic activity
