TY - JOUR
T1 - One-pot synthesis of hierarchically structured ZSM-5 zeolites using single micropore-template
AU - Ge, Tongguang
AU - Hua, Zile
AU - He, Xiaoyun
AU - Zhu, Yan
AU - Ren, Wenchao
AU - Chen, Lisong
AU - Zhang, Lingxia
AU - Chen, Hangrong
AU - Lin, Chucheng
AU - Yao, Heliang
AU - Shi, Jianlin
N1 - Publisher Copyright:
© 2015, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
PY - 2015/6/20
Y1 - 2015/6/20
N2 - An easy one-step hydrothermal process has been developed for the first time for the synthesis of hierarchically structured zeolites (HSZs) using a single micropore template of tetrapropylammonium hydroxide. Compared with conventional constructive dual-templating synthesis and destructive post-demetallation methods, this two-in-one process reduces the mass of porogens required and consequent air pollution by combustion of the template, and simplifies the synthesis. The resultant HSZs were characterized by X-ray diffraction, N2 adsorption, scanning electron microscopy, transmission electron microscopy, X-ray fluorescence, 27Al nuclear magnetic resonance, and NH3 temperature programmed desorption. The resultant HSZs with uniform shuttle-type morphology showed high hydrothermal stability and excellent catalytic activity with prolonged life-time in the model reaction of 1,3,5-triisopropylbenzene cracking. A "nucleation/growth-demetallation/recrystallization" mechanism was proposed, which is featured with the integration of zeolite crystallization/growth and basic etching into one hydrothermal process for HSZs production.
AB - An easy one-step hydrothermal process has been developed for the first time for the synthesis of hierarchically structured zeolites (HSZs) using a single micropore template of tetrapropylammonium hydroxide. Compared with conventional constructive dual-templating synthesis and destructive post-demetallation methods, this two-in-one process reduces the mass of porogens required and consequent air pollution by combustion of the template, and simplifies the synthesis. The resultant HSZs were characterized by X-ray diffraction, N2 adsorption, scanning electron microscopy, transmission electron microscopy, X-ray fluorescence, 27Al nuclear magnetic resonance, and NH3 temperature programmed desorption. The resultant HSZs with uniform shuttle-type morphology showed high hydrothermal stability and excellent catalytic activity with prolonged life-time in the model reaction of 1,3,5-triisopropylbenzene cracking. A "nucleation/growth-demetallation/recrystallization" mechanism was proposed, which is featured with the integration of zeolite crystallization/growth and basic etching into one hydrothermal process for HSZs production.
KW - Base etching
KW - Catalysis
KW - Hierarchically structured zeolite
KW - Single template
KW - ZSM-5
UR - https://www.scopus.com/pages/publications/84932130741
U2 - 10.1016/S1872-2067(14)60263-1
DO - 10.1016/S1872-2067(14)60263-1
M3 - 文章
AN - SCOPUS:84932130741
SN - 1872-2067
VL - 36
SP - 866
EP - 873
JO - Chinese Journal of Catalysis
JF - Chinese Journal of Catalysis
IS - 6
ER -