Efficient one-pot production of γ-valerolactone from xylose over Zr-Al-Beta zeolite: rational optimization of catalyst synthesis and reaction conditions


The one-pot conversion of xylose into γ-gammavalerolactone in 2-propanol over bifunctional Zr-Al-Beta zeolites, prepared via a post-synthetic route, was optimized in terms of both catalyst synthesis and reaction conditions. In the catalyst preparation, the use of Zr(NO3)4 as zirconium source as well as the tuning of the amount of water used during the impregnation had a strong impact on the activity of the Zr species due to an improved dispersion of Zr species. As for the aluminium to zirconium exchange, an optimal Al/Zr ratio of 0.20 was identified to provide a catalyst with better activity. The modelization of the catalytic system through experimental design methodology allowed to identify the optimal values of the most influential reaction conditions: temperature 190 °C, catalyst loading 15 g L−1, and starting xylose concentration 30.5 g L−1. Under these optimized reaction conditions, Zr-Al-Beta catalyst provides a GVL yield from xylose (ca. 34%) after only 10 h. The catalysts are stable and reusable after thermal regeneration at 550 °C.

Publication DOI: https://doi.org/10.1039/C7GC01969F
Divisions: College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Chemical Engineering & Applied Chemistry
College of Engineering & Physical Sciences > Energy and Bioproducts Research Institute (EBRI)
College of Engineering & Physical Sciences
Additional Information: © Royal Society of Chemistry, 2017. Funding: Spanish Ministry of Economy and Competitiveness - projects CTQ2014‐52907‐R and CTQ2015‐68844‐REDT; Regional Government of Madrid - project S2013‐MAE‐2882; Spanish Ministry of Economy and Competitiveness - FPI grant (BES‐2015‐072709).
Publication ISSN: 1463-9270
Last Modified: 20 May 2024 07:21
Date Deposited: 27 Nov 2017 15:10
Full Text Link:
Related URLs: http://xlink.rs ... ?DOI=C7GC01969F (Publisher URL)
PURE Output Type: Article
Published Date: 2017-09-27
Accepted Date: 2017-09-27
Authors: Melero, Juan A.
Morales, Gabriel
Iglesias, Jose
Paniagua, Marta
López-aguado, Clara
Wilson, Karen (ORCID Profile 0000-0003-4873-708X)
Osatiashtiani, Amin (ORCID Profile 0000-0003-1334-127X)



Version: Accepted Version

| Preview

Export / Share Citation


Additional statistics for this record