【摘要】 考察了钛硅分子筛(TS-1)以及硅烷化钛硅分子筛(TS-1-S)上环烷酸钴(Co-nap)催化环己烷氧化反应性能.结果表明,TS-1和TS-1-S对该反应均具有显著的促进作用,环己烷转化率由无TS-1时的3.6%分别提高至6.4%和7.9%,产物选择性保持在80%左右,反应时间由300min可缩短为130min.进一步的研究表明,随着TS-1的加入,Co-nap在其表面发生了吸附,使得均相反应变成了"类多相催化反应",这是反应性能显著提高的主要原因.更多还原

【Abstract】 The promoting effect of titanium silicate(TS-1)molecular sieve and silanized TS-1(TS-1-S)on the homogeneous liquid oxidation of cyclohexane catalyzed by cobalt naphthenate(Co-nap)with oxygen as oxidant was investigated.Both TS-1 zeolites were efficient promoters.The conversion of cyclohexane was 7.9%with a selectivity of 83.7%when it was catalyzed by Co-nap/TS-1-S,and the reaction time was reduced to 130 min as compared to 300 min with Co-nap as the catalyst.The adsorption of Co-nap on TS-1-S,which transformed a homogeneous reaction into a"quasi-heterogeneous"reaction,was the reason for the better catalytic performance.更多还原