| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 73413 | Microporous and Mesoporous Materials | 2013 | 14 Pages |
•A quasi solid state crystallization transformation process was developed.•Micro-meso-macroporous catalysts are constructed from zeolite nanocrystals.•The crystallization transformation process was investigated in detail.•The resultant hierarchically porous materials show superior catalytic activity.
The design, preparation and application of novel hierarchically interconnected micro-meso-macroporous solid-acid catalysts constructed from zeolite nanocrystals via a chemically crystallization process in a quasi solid state system using glycerin medium have been described. These hierarchical solid-acid catalysts possess well-defined macrochannels and interconnected mesopores in the walls which have been constructed from various zeolite microporous units including Zr-silicalite-1, ZSM-5 and Beta nanocrystals, respectively. Meanwhile, the hierarchically micro-, meso-, macro-pore systems are homogeneously distributed throughout the final catalysts. The quasi solid state chemically crystallization processes to generate hierarchical solid-acid catalysts have been investigated in detail. Different hierarchical solid-acid catalysts with microporous MFI or Beta architectures can be obtained by varying crystallization conditions. The resultant hierarchically micro-meso-macroporous solid-acid catalysts show strong acidities and superior catalytic properties for esterification reaction of high free fatty acid (FFA) oils. The hierarchical zeolitic materials with micro-meso-macroporous structure should be advantageous candidates for the application in solid-acid catalysis.
Graphical abstractA series of hierarchically micro-meso-macroporous solid-acid catalysts constructed from zeolite nanocrystals via a chemically crystallization process in a quasi solid state system using glycerin medium have been fabricated for highly efficient biodiesel production.Figure optionsDownload full-size imageDownload as PowerPoint slide
