TY - JOUR
T1 - Two-stage glucose-assisted crystallization of ZSM-5 to improve methanol to propylene (MTP)
AU - Feng, Rui
AU - Wang, Xixi
AU - Lin, Jiawei
AU - Li, Zheng
AU - Hou, Kun
AU - Yan, Xinlong
AU - Hu, Xiaoyan
AU - Yan, Zifeng
AU - Rood, Mark J.
N1 - Funding Information:
This work was supported by the Fundamental Research Funds for the Central Universities (No. 2018QNB04 ) and the Priority Academic Program Development of Jiangsu Higher Education Institutions . Appendix A
Publisher Copyright:
© 2018
PY - 2018/11/1
Y1 - 2018/11/1
N2 - Improving propylene selectivity and the lifetime of ZSM-5 catalyst is of great significance for methanol to propylene (MTP) reaction. Hierarchical ZSM-5 zeolites were synthesized by a two-stage crystallization method using glucose as a second template. The structural and surface properties and the morphologies of the prepared samples were characterized by low-temperature N2 sorption, XRD, 27Al and 29Si NMR, FTIR using pyridine probe molecule, NH3-TPD, SEM, and TEM analysis. The two-stage glucose-assisted crystallized ZSM-5 zeolites exhibited large prismatic crystallites, increased intracrystalline mesopores, and reduced acid amount and acid strength, compared with the conventional one-stage crystallized ZSM-5. Methanol to propylene (MTP) reaction at 450 °C and methanol WHSV of 3.8 h−1 revealed that the newly prepared ZSM-5 catalyst, such as ZSM-5-T3, exhibited highest propylene selectivity of 45.2%, propylene to ethylene ratio of 8.4, and C2 =-C4 = selectivity of 63.9%.
AB - Improving propylene selectivity and the lifetime of ZSM-5 catalyst is of great significance for methanol to propylene (MTP) reaction. Hierarchical ZSM-5 zeolites were synthesized by a two-stage crystallization method using glucose as a second template. The structural and surface properties and the morphologies of the prepared samples were characterized by low-temperature N2 sorption, XRD, 27Al and 29Si NMR, FTIR using pyridine probe molecule, NH3-TPD, SEM, and TEM analysis. The two-stage glucose-assisted crystallized ZSM-5 zeolites exhibited large prismatic crystallites, increased intracrystalline mesopores, and reduced acid amount and acid strength, compared with the conventional one-stage crystallized ZSM-5. Methanol to propylene (MTP) reaction at 450 °C and methanol WHSV of 3.8 h−1 revealed that the newly prepared ZSM-5 catalyst, such as ZSM-5-T3, exhibited highest propylene selectivity of 45.2%, propylene to ethylene ratio of 8.4, and C2 =-C4 = selectivity of 63.9%.
KW - Acid sites
KW - Glucose
KW - Methanol to propylene
KW - Two-stage crystallization
KW - ZSM-5
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U2 - 10.1016/j.micromeso.2018.05.003
DO - 10.1016/j.micromeso.2018.05.003
M3 - Article
AN - SCOPUS:85046778972
SN - 1387-1811
VL - 270
SP - 57
EP - 66
JO - Microporous Materials
JF - Microporous Materials
ER -