Anchoring Effect of Organosilanes on Hierarchical ZSM-5 Zeolite for Catalytic Fast Pyrolysis of Cellulose to Aromatics.

Content Provider	Europe PMC
Author	Zhou, Huan Lin, Wenwen Chen, Chao Liu, Chuang Wu, Jianghua Wang, Jianghao Fu, Jie
Copyright Year	2022
Abstract	As an essential chemicalfeedstock, aromatics can be obtained frombiomass by catalytic fast pyrolysis (CFP) technology, in which diffusionlimitation is still a problem. In this study, several ZSM-5 zeoliteswith intercrystal stacking macropores were synthesized by adding organosilanes(OSAs) with different alkyl chain groups. Due to the structure-directingeffect of the OSA, the prepared ZSM-5 zeolites possess a larger externalsurface area and pore volume than Blank-Z5. Moreover, the pore sizeis related to the extent of anchoring of the OSA and silicon–aluminumspecies in the zeolite precursor. Pyridine Fourier transform infrared(Py-FTIR) and NH3-temperature-programmed desorption (TPD)analyses show that the obtained ZSM-5 zeolites have a higher Brønstedacidity and total number of acid sites. In addition, excessive additionof OSA is not conducive to the growth of ZSM-5 zeolites. The catalyticperformance of the synthesized ZSM-5 zeolites was evaluated by Py-GC/MS.The larger external surface area and pore volume improve the accessibilityof the acid sites and thus promote the conversion of biomass intoaromatics.
Journal	ACS Omega
Volume Number	7
PubMed Central reference number	PMC9097197
Issue Number	18
PubMed reference number	35571774
e-ISSN	24701343
DOI	10.1021/acsomega.2c00983
Language	English
Publisher	American Chemical Society
Publisher Date	2022-04-25
Access Restriction	Open
Rights License	Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). © 2022 The Authors. Published by American Chemical Society
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering