Membrane Reactor Engineering by unknow

Author:unknow
Language: eng
Format: epub
ISBN: 9781118906811
Publisher: John Wiley & Sons, Inc.
Published: 2016-09-26T00:00:00+00:00

MR Type Catalyst T (°C) Conversion Selectivity CO Ref.

La0.4Ba0.6Fe0.8Zn0.2O3–δ Ni–Ca 900 100% 95% [75]

SrFeCo0.5Ox Ru‐based 850 99% 98% [79]

Sm0.4Ba0.6Co0.2Fe0.8O3−δ Rh/MgO 900 90% 98% [80]

Ba0.5Sr0.5Co0.8Fe0.2O3−δ LiLaNiO/Al2O3 875 94% 95% [81]

YSZ–SrCo0.4Fe0.6O3−δ NiO/Al2O3 850 64% 100% [82]

Ca0.8Sr0.2Ti0.7Fe0.3O3‐α Ni–Ca0.8Sr0.2Ti0.9Fe0.1O3–α 900 13.7% 98% [83]

In most cases the membrane functions mainly as an oxygen supplier and distributor, while its catalytic properties are less important due to the high activity of the reforming catalyst.

Concerning to the theoretical results, the reactor with smaller diameter (D) and greater length‐to‐diameter ratio (L/D) may present better performance in terms of high methane conversion and high hydrogen concentration [79]. In addition, the feed contact time and the amount of catalyst packed have major effects on the methane conversion, oxygen permeation rate and CO selectivity [84, 85]. In order to obtain better production, the catalyst loading should match well with the available membrane area. Nevertheless, it is generally considered that the methane conversion is controlled mainly by the oxygen permeation rate rather than the reaction rate at the catalyst.

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