Stability of bimetallic Ni/CeO2–SiO2 catalysts during fuel grade bioethanol reforming in a fluidized bed reactor

Concetta Ruocco, Vincenzo Palma, Marta Cortese and Marco Martino

Renewable Energy, 2022, vol. 182, issue C, 913-922

Abstract: Oxidative steam reforming of bioethanol has been investigated in a fluidized bed reactor under atmospheric pressure at 500 °C over Pt–Ni/CeO2–SiO2 and Ru–Ni/CeO2–SiO2 catalysts, prepared with a noble metal content in the range 0–3 wt%. A preliminary investigation of the bimetallic catalysts performance was performed under a simulated bioethanol/oxygen stream (C2H5OH:H2O:O2:Ar = 10:40:5:45) at 500 °C and WHSV = 61.7 h−1. Poor stability was recorded over the low-loaded samples of both the series and the highest ethanol conversion as well as H2 yield after 25 h of time-on-stream were recorded over the 2 Pt–10Ni/CeO2–SiO2 catalyst. In fact, a growth in the content of the noble metal assured an improvement in terms of resistance towards deactivation. However, a further increase up to 2 wt% was detrimental for both Pt and Rh-based catalysts. The most durable catalyst (2 Pt–10Ni) was additionally tested under a raw bioethanol stream (commercial fuel grade bioethanol) for 100 h at 4.1 h−1: complete conversion and a stable H2 yield above 50% was obtained; the characterization of the spent catalyst mainly revealed the formation of filamentous coke, which is expected to cause a low extent of deactivation. As a result, no apparent activity loss was observed and the bimetallic catalyst appeared a promising candidate for reforming of crude ethanol.

Keywords: Hydrogen; Reforming; Bioethanol; Stability; Coke (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148121015238
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:182:y:2022:i:c:p:913-922

DOI: 10.1016/j.renene.2021.10.064

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().