MCM-41掺杂Cr对正己醇催化活性的影响  

INFLUENCE OF Cr CONTENT IN MCM-41 ON CATALYTIC OXIDATION ACTIVE OF n-HEXANOL

作　　者：庄红[1] 张铁华[1] 林松毅[1] 刘静波[1] 甄开吉[2] 

机构地区：[1]吉林大学军需科技学院,吉林长春130062 [2]吉林大学化学学院,吉林长春130023

出　　处：《石油学报（石油加工）》2006年第B10期165-167,共3页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金项目（29873018）资助

摘　　要：合成了掺杂不同Cr含量的Cr-MCM-41分子筛，采用XRD、FT—IR等手段对催化剂进行了表征，并考察了它们对正己醇催化氧化性能的影响。结果表明，掺杂适量的Cr，可使正己醇的转化率达到48％，正己酸的选择性达到83％。Cr的掺杂量、反应温度、催化剂用量等条件对该催化反应均有-定影响。适量杂原子的掺杂不会破坏MCM-41分子筛的结构。Mesoporous molecular sieves MCM-41 with different content of Cr were prepared, and the factors influencing the catalytic properties for n-hexanol oxidation to hexanoic acid were investigated. ;The catalysts were characterized by means of XRD and FT-IR. The experimental results indicated that 48% conversion of octadecanol and 83% selectivity of hexanoic acid over Cr-MCM-41 catalyst were achieved. The catalytic efficiency and selectivity of these Cr-MCM-41 catalysts were influenced by many factors, such as the amount of Cr doped, reaction temperature and the amount of catalysts employed, Ordered mesoporous structure of MCM-41 was well preserved when doped with appropriate amount of heteroatom.

关 键 词：Cr—MCM-41分子筛 正己醇 催化活性 

分 类 号：O064[理学]