Abstract
Zeolite materials play a significant role throughout the oil refining and petrochemical industry. Microporous ZSM-5 has a high degree of crystallinity but low mass transfer, while hierarchical ZSM-5 shows a low degree of crystallinity as well as acidity. In this work, we first report the synthesis of ZSM-5 with a new morphological structure, which has nanocrystalline ZSM-5 particles on the surface of an intact ZSM-5 zeolite. This not only improved the mass transfer in microporosity but also overcame disadvantages of hierarchical ZSM-5 including low degrees of crystallinity and acidity. This new and very efficient structure with both intracrystal microporosity and intercrystal macroporosity, formed by secondary crystallization after the intact ZSM-5 zeolite was synthesized, was verified by transmission electronic microscopy, N2 adsorption and desorption, and X-ray diffraction. The obtained ZSM-5 zeolite showed a uniform size (∼200 nm), high crystallinity acidity, and a suitable hierarchical structure that exhibited excellent properties in the catalytic fast pyrolysis of cellulose to produce aromatics.
| Original language | English |
|---|---|
| Pages (from-to) | 21178-21185 |
| Number of pages | 8 |
| Journal | Journal of Materials Chemistry A |
| Volume | 6 |
| Issue number | 42 |
| DOIs | |
| State | Published - 2018 |
Funding
This work was supported by the National Natural Science Foundation of China (No. 21436007, 21676243, 21706228) and the Zhejiang Provincial Natural Science Foundation of China (No. LR17B060002). SD was supported by the Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences, U.S. Department of Energy. Work at the Molecular Foundry was supported by the Office of Science, Office of Basic Energy Sciences of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. J. L. was partially supported by the National Heart, Lung, and Blood Institute of the National Institutes of Health (No. R01HL115153) and the National Institute of General Medical Sciences of the National Institutes of Health (No. R01GM104427).
