摘要
以 XRD,H2 - TPR,NH3- TPD为手段 ,研究了 Pb O和 HZSM- 5沸石表面的相互作用并与探针反应甲苯甲醇烷基化反应的活性和选择性进行了关联 .实验结果表明 ,Pb O和 HZSM- 5沸石表面有一定的相互作用 ,HZSM- 5被 Pb O修饰后 ,表面强酸中心减少 ,从而使探针反应的活性下降而选择性提高 .
By XRD, NH 3-TPD and H 2-TPR,the interaction of PbO with HZSM\|5 and related the experimental results with the activity and selectivity of alkylation of toluene with methanol are studied. Results show that the activity of the reaction decreased while the selectivity increased because PbO occupied the centers of the acid of the HZSM\|5 surface.
出处
《郑州大学学报（自然科学版）》
CAS
2000年第2期84-86,共3页
Journal of Zhengzhou University (Natural Science)
