The effect of crystal sizes of HZSM-5 zeolites in ethanol conversion to propylene

详细信息	查看全文 | 推荐本文 |

• 作者：Tao Meng ; Dongsen Mao ; ^{dsmao@sit.edu.cn} ; Qiangsheng Guo ; Guanzhong Lu
• 关键词：HZSM-5 zeolite ; Crystal size ; Ethanol to propylene
• 刊名：Catalysis Communications
• 出版年：2012
• 期刊代码：12_15667367
• 类别：ce
• 出版时间：5 May, 2012
• 卷：21
• 期：Complete
• 页码：52-57
• 文件大小：823 K

摘要

Three ZSM-5 zeolites with different crystal sizes were prepared and characterized by SEM, XRD, adsorption/desorption of N₂, NH₃-TPD, Py-IR and TG-DTA techniques. The results show that the acidic properties of HZSM-5 catalysts are very similar, but their textual properties are strongly influenced by crystal size. Their catalytic performances for the ethanol conversion to propylene were investigated in a continuous flow fixed-bed micro-reactor. In comparison with the large-sized HZSM-5, the small-sized HZSM-5 shows higher propylene selectivity and better stability, which reveals that decreasing the crystal size of zeolite is of benefit to ethanol conversion to propylene.