NDLI: A fast hybrid start-up process for thermally self-sustained catalytic <i>n</i>-butane reforming in micro-SOFC power plants

Content Provider	Royal Society of Chemistry (RSC)
Author	Stark, Wendelin J. Nabavi, Majid Santis-Alvarez, Alejandro J. Poulikakos, Dimos Hild, Nora
Copyright Year	2011
Abstract	This work aims at the investigation and optimization of a hybrid start-up process for a self-sustained reactor for n-butane to syngas conversion in intermediate temperature, micro-solid oxide fuel cell (micro-SOFC) power plants. The catalytic reaction is carried out in the presence of Rh-doped Ce0.5Zr0.5O2nanoparticles in a disk-shaped reactor. For the start-up, a resistance heater is embedded inside the catalytic bed and is activated until the exothermic oxidative reaction is initiated. The self-sustained temperature and reforming performance are demonstrated to be highly dependent on the fuel to oxygen (C/O) ratio and the catalytic activity at different space times. It is shown that a C/O ratio of 0.8 is a very good choice in terms of achieved steady-state temperature, syngas selectivity and start-up time. At a reactor inlet temperature of 809 °C for a C/O ratio of 0.8 and a space time as low as 8 ms, a syngas selectivity of 69.6% and a temperature of 529 °C at the simulated micro-SOFC membrane are demonstrated. After only 15 s from ignition, a temperature of 600 °C at the reactor inlet is reached. The hybrid start-up process is optimized with respect to a specific setup as an example, but is of general nature and utility to similar systems.
Starting Page	3041
Ending Page	3050
Page Count	10
File Format	HTM / HTML PDF
ISSN	17545692
Volume Number	4
Issue Number	8
Journal	Energy & Environmental Science
DOI	10.1039/c1ee01330k
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Program optimization Butane Syngas Fuel cell Exothermic process Oxygen
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Pollution Renewable Energy, Sustainability and the Environment Nuclear Energy and Engineering

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