authors |
Antunes, MM; Neves, P; Fernandes, A; Lima, S; Silva, AF; Ribeiro, MF; Silva, CM; Pillinger, M; Valente, AA |
nationality |
International |
journal |
CATALYSIS SCIENCE & TECHNOLOGY |
keywords |
LEWIS-ACID SITES; PONNDORF-VERLEY REDUCTION; SILICA ZEOLITE-BETA; MQ MAS NMR; GAMMA-VALEROLACTONE; ETHYL LEVULINATE; MICRO/MESOPOROUS COMPOSITES; SI/AL RATIO; TRANSFER HYDROGENATION; MOLECULAR-SIEVES |
abstract |
The sustainable conversion of biomass and biomass-derived platform chemicals demands efficient catalytic processes for which modified versions of zeolites can be strategically important. The catalytic potential of bulk and composite catalysts which simultaneously feature zeolite crystallinity, mesoporosity and Zr and Al sites were explored for the valorisation of furfural (Fur; industrially produced from hemicelluloses) via integrated reduction and acid reactions in alcohol media, to give useful bio-products (bioP), namely, furanic ethers, levulinate esters and angelica lactones. Different synthetic strategies were used starting from zeolite microcrystals or nanocrystals. A composite consisting of nanocrystals of Zr,Al-Beta embedded in a mesoporous matrix is reported for the first time. In a different synthesis approach, a bulk mesoporous zeotype material was prepared by post-synthesis alkaline/acid/impregnation treatments, and explored for the first time as a catalyst for a one-pot reduction/acid reaction system. Characterisation studies of the morphology, structure, texture and nature of the Al and Zr sites (Al-27 MAS NMR spectroscopy, FT- IR spectroscopy of adsorbed pyridine or deuterated acetonitrile) helped understand the influence of material properties on catalytic performance. These types of materials are active and stable catalysts for the integrated conversion of Fur to bioP. |
publisher |
ROYAL SOC CHEMISTRY |
issn |
2044-4753 |
year published |
2016 |
volume |
6 |
issue |
21 |
beginning page |
7812 |
ending page |
7829 |
digital object identifier (doi) |
10.1039/c6cy00223d |
web of science category |
Chemistry, Physical |
subject category |
Chemistry |
unique article identifier |
WOS:000386424200018
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ciceco authors
impact metrics
journal analysis (jcr 2019):
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journal impact factor |
5.721 |
5 year journal impact factor |
5.863 |
category normalized journal impact factor percentile |
74.528 |
dimensions (citation analysis):
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altmetrics (social interaction):
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