Hierarchically Porous Materials Built of Fe-Ssilicalite Nanobeads Full article
| Journal |
Journal of Materials Chemistry A, Materials for Energy and Sustainability
ISSN: 2050-7488 , E-ISSN: 2050-7496 |
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| Output data | Year: 2014, Volume: 2, Number: 38, Pages: 16061-16070 Pages count : 10 DOI: 10.1039/c4ta02904f | ||||||
| Tags | PHARMACEUTICALLY ACTIVE COMPOUNDS; ARGON ADSORPTION; WASTE-WATER; TAP WATER; CATALYSTS; ZEOLITES; IRON; OXIDATION; NITROGEN; Fe-ZSM-5 | ||||||
| Authors |
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| Affiliations |
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Funding (3)
| 1 | Russian Foundation for Basic Research | 12-03-93116 |
| 2 | Russian Science Foundation | 14-13-01155 |
| 3 | Skolkovo Foundation | 1 от 28.11.2013 |
Abstract:
Hierarchically porous zeolite materials built of closely and randomly packed uniform Fe-silicalite nanobeads were synthesized. The desired assembly of nanobeads was achieved by the centrifugation and sedimentation of nanozeolite suspension followed by drying and calcination. A micro/meso/macroporous Fe-silicalite material with spongy texture built of closely packed nanocrystals was designed using polystyrene latex as a supramolecular template. Large Fe-silicalite microbeads were synthesized to compare their structure with the nanocrystalline materials. The synthesized samples were characterized by laser diffraction analysis, X-ray diffraction, scanning and transmission electron microscopy, energy-dispersive X-ray spectroscopy, argon and nitrogen adsorption measurements, inductively coupled plasma optical emission spectrometry, UV visible diffuse reflectance spectroscopy and temperature-programmed desorption of ammonia. Fe-silicalite nanozeolite materials have shown high crystallinity, and possess micro- and meso/macropore surface areas and high specific pore volumes. Pellets built of closely packed nanocrystals have exhibited good mechanical stability in benzene and water. Calcined Fe-silicalite materials built of nanobeads were observed to contain highly dispersed ferric clusters no more than 1 nm in size. The 3 nm ferric clusters in the zeolitic microbeads resulted in the appearance of Lewis acid sites with medium strength, which are absent in the nanobeads. Catalytic performance of hierarchically porous Fe-silicalites was studied in the total oxidation of clarithromycin lactobionate by H2O2at 323 K compared with Fe-silicalite microbeads. Hierarchical Fe-silicalites are more efficient catalysts vs. Fe-silicalite microbeads due to increased catalytic site accessibility.
Cite:
Sashkina K.S.
, Rudina N.A.
, Lysikov A.I.
, Ayupov A.B.
, Parkhomchuk E.V.
Hierarchically Porous Materials Built of Fe-Ssilicalite Nanobeads
Journal of Materials Chemistry A, Materials for Energy and Sustainability. 2014. V.2. N38. P.16061-16070. DOI: 10.1039/c4ta02904f WOS Scopus РИНЦ ANCAN OpenAlex
Hierarchically Porous Materials Built of Fe-Ssilicalite Nanobeads
Journal of Materials Chemistry A, Materials for Energy and Sustainability. 2014. V.2. N38. P.16061-16070. DOI: 10.1039/c4ta02904f WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Jun 9, 2014 |
| Accepted: | Jul 25, 2014 |
| Published online: | Jul 28, 2014 |
Identifiers:
| Web of science: | WOS:000342079200050 |
| Scopus: | 2-s2.0-84907158096 |
| Elibrary: | 23988732 |
| Chemical Abstracts: | 2014:1221823 |
| Chemical Abstracts (print): | 161:425318 |
| OpenAlex: | W1969456025 |