| Autors: Popova M., Dimitrov M., Boycheva, S. V., Dimitrov I., Ublekov F., Koseva N., Atanasova G., Karashanova D., Szegedi Á. Title: Ni-Cu and Ni-Co-Modified Fly Ash Zeolite Catalysts for Hydrodeoxygenation of Levulinic Acid to γ-Valerolactone Keywords: Co-Ni alloy; fly ash zeolite; levulinic acid Abstract: Monometallic (Ni, Co, Cu) and bimetallic (Ni-Co, Ni-Cu) 10–20 wt.% metal containing catalysts supported on fly ash zeolite were prepared by post-synthesis impregnation method. The catalysts were characterized by X-ray powder diffraction, N2 physisorption, XPS and H2-TPR methods. Finely dispersed metal oxides and mixed oxides were detected after the decomposition of the impregnating salt on the relevant zeolite support. Via reduction intermetallic, NiCo and NiCu phases were identified in the bimetallic catalysts. The catalysts were studied in hydrodeoxygenation of lignocellulosic biomass-derived levulinic acid to γ-valerolactone (GVL) in a batch system by water as a solvent. Bimetallic, 10 wt.% Ni, and 10 wt.% Cu or Co containing fly ash zeolite catalysts showed higher catalytic activity than monometallic ones. Their selectivity to GVL reached 70–85% at about 100% conversion. References Issue
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Цитирания (Citation/s):
1. Liang, Z., Liu, Z., Yu, L., Wang, W. Fly ash-based zeolites: from waste to value – A comprehensive overview of synthesis, properties, and applications (2024) Chemical Engineering Research and Design, 212, pp. 240-260. https://www.scopus.com/inward/record.uri?eid=2-s2.0-85208662222&doi=10.1016%2fj.cherd.2024.10.031&partnerID=40&md5=0948da471020d17374f59848b28ad36c DOI: 10.1016/j.cherd.2024.10.031 DOCUMENT TYPE: Review SOURCE: Scopus - 2024 - в издания, индексирани в Scopus или Web of Science
Вид: статия в списание, публикация в издание с импакт фактор, публикация в реферирано издание, индексирана в Scopus и Web of Science
