Hydrogen-rich gas production from ethanol steam-reforming reaction using NiZr-loaded MCM-48 catalysts at mild temperature

Abstract

SUMMARY The rich‐hydrogen generation from ethanol steam reforming over NiZr, which is used as an anode material in solid oxide fuel cells, ‐loaded MCM‐48 (NiZr/MCM‐48) catalyst was investigated in this study. We used an impregnation approach to synthesize an MCM‐48 (70.0 wt‐%) support loaded with bimetallic NiZr (30.0‐wt%, Ni:Zr atomic ratio = 4:6, 5:5, and 6:4), and the prepared catalysts were applied to the steam‐reforming reactions of ethanol. These three bimetallic NiZr/MCM‐48 catalysts exhibited significantly higher reforming reactivity than the mono‐metal, Ni‐loaded MCM‐48 (Ni/MCM‐48) catalyst. The hydrogen production was started from 350°C over the three NiZr/MCM‐48 catalysts, compared to above 550°C over the Ni/MCM‐48 catalyst. The catalytic performance was affected by the Zr content. The H2 production and ethanol conversion were maximized at 85% and 95%, respectively, over Ni4Zr6/MCM‐48 at 750°C for 1 h at CH3CH2OH:H2O = 1:1 and a gas hourly space velocity of 4000 h‐1. This high performance was maintained for up to 60 h. Copyright © 2013 John Wiley & Sons, Ltd.

Synthesis and Catalytic Performance of Al-MCM-48 and Ti-MCM-48

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Dynamic hydrogen production from ethanol steam-reforming reaction on NixMoy/SBA-15 catalytic system

“…Most ethanol SR (ESR) studies evaluated nickel-based catalysts supported on Al 2 O 3 , SiO 2 , and various zeolites containing alkali metals [9,10]. On the other hand, the Ni-based Al 2 O 3 support catalysts are susceptible to deactivation, resulting from carbon deposition, even when operating at steam-to-carbon ratios predicted to be thermodynamically outside of the carbon-forming regime.…”

Hydrogen production by partial oxidation of ethanol over Pt/CNT catalysts

“…In comparison with other possible hydrogen source in liquid form, such as methanol or dimethyl ether, ethanol is not only easier to handle, store, and transport, but also has lower toxicity and volatility. Therefore, this high energy density compound is a key candidate for hydrogen production .…”

“…There are three different catalytic routes that can be used to convert ethanol into hydrogen, i.e. steam reforming , partial oxidation , and oxidative steam reforming , which combine steam reforming and partial oxidation. On the other hand, hydrogen can also be generated by the other methods such as photocatalytic reaction with modified TiO 2 , water gas shift reaction of synthesis gas , and reaction with sodium borohydride solution .…”