摘要
采用水热一步法合成了复合型Mo O3-Zr O2固体超强酸,运用X射线衍射(XRD)、N2吸附脱附(BET)、红外光谱(FTIR)和扫描电镜(SEM)对催化剂进行表征,研究Mo O3质量分数对Mo O3-Zr O2结构的影响。以正己烷为原料在小型固定床反应器上考察Mo O3-Zr O2催化剂的异构化性能。结果表明,Mo O3的引入促进了Zr O2由单斜晶相向四方晶相的转变,增加了Mo O3-Zr O2的比表面积。当Mo O3含量为20%时,Mo O3在Zr O2表面达到单层分散,形成了大量的超强酸位,其正己烷的转化率和异构体的收率分别为48.6%和34.1%。
MoO3-ZrO2 composite solid super acid was synthesized by hydrothermal one-step method. The MoOa-ZrO2 were characterized by XRD,N2 adsorption-desorption（BET）, FTIR and SEM to research on the influence of MoO3 content on MoO3-ZrO2 structure. The isomerization performance investigation of MoO3-ZrO2 catalyst was＇carried out in a small fixed bed reactor with n-hexane as raw material. The results showed that the introduction of MoO3 promoted the ZrO2 by monoelinic crystal phase into tetragonal phase and increased the specific surface area of MoOa- ZrO2. When the content of MoO3 is 20%, MoO3 reaches to the monolayer dispersion of the surface of ZrO2, there is a large number of super acid forming. The conversion rate of n-hexane and yield of isomer is 48.6% and 34.1% respectively.
出处
《应用化工》
CAS
CSCD
北大核心
2015年第8期1499-1502,共4页
Applied Chemical Industry
