◾ Recent Advancements in Biodiesel from Nonedible Oils Using Packed Bed Membrane Reactors

Methanol is considered to be a potential energy carrier. Currently, its synthesis from CO2 is performed in conventional reactors, although its yield can be improved if a packed bed membrane reactor (PBMR) is used instead. The objective of this work is to select potential PBMRs as an alternative to the conventional ones.

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Packed-Bed Membrane Reactors

Membrane Reactors ◽

10.1002/9783527629725.ch5 ◽

2010 ◽

pp. 133-165 ◽

Cited By ~ 4

Author(s):

Christof Hamel ◽

Ákos Tóta ◽

Frank Klose ◽

Evangelos Tsotsas ◽

Andreas Seidel-Morgenstern

Keyword(s):

Packed Bed ◽

Membrane Reactors

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Recent advances in membrane reactors for hydrogen production by steam reforming of ethanol as a renewable resource

Reviews in Chemical Engineering ◽

10.1515/revce-2017-0083 ◽

2019 ◽

Vol 35 (3) ◽

pp. 377-392 ◽

Cited By ~ 6

Author(s):

Majid Taghizadeh ◽

Fatemeh Aghili

Keyword(s):

Noble Metal ◽

Steam Reforming ◽

Membrane Reactor ◽

Renewable Resource ◽

Packed Bed ◽

Membrane Reactors ◽

Hydrogen Yield ◽

Recent Advances ◽

Steam Reforming Of Ethanol ◽

The Impact

AbstractDuring the last decade, hydrogen has attracted lots of interest due to its potential as an energy carrier. Ethanol is one of the renewable resources that can be considered as a sustainable candidate for hydrogen generation. In this regard, producing hydrogen from ethanol steam reforming (ESR) would be an environmentally friendly process. Commonly, ESR is performed in packed bed reactors; however, this process needs several stages for hydrogen separation with desired purity. Recently, the concept of a membrane reactor, an attractive device integrating catalytic reactions and separation processes in a single unit, has allowed obtaining a smaller reactor volume, higher conversion degrees, and higher hydrogen yield in comparison to conventional reactors. This paper deals with recent advances in ESR in terms of catalyst utilization and the fundamental of membranes. The main part of this paper discusses the performance of different membrane reactor configurations, mainly packed bed membrane reactors, fluidized bed membrane reactors, and micro-membrane reactors. In addition, a short overview is given about the impact of ESR via different catalysts such as noble metal, non-noble metal, and bi-metallic catalysts.

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Experimental Investigation of the Oxidative Coupling of Methane in a Porous Membrane Reactor: Relevance of Back-Permeation

Membranes ◽

10.3390/membranes10070152 ◽

2020 ◽

Vol 10 (7) ◽

pp. 152 ◽

Cited By ~ 2

Author(s):

Aitor Cruellas ◽

Wout Ververs ◽

Martin van Sint Annaland ◽

Fausto Gallucci

Keyword(s):

Oxidative Coupling ◽

Membrane Reactor ◽

Effective Diffusion ◽

Packed Bed ◽

Porous Membrane ◽

Oxidative Coupling Of Methane ◽

Membrane Reactors ◽

Packed Bed Reactor ◽

Membrane Properties ◽

Beneficial Effects

Novel reactor configurations for the oxidative coupling of methane (OCM), and in particular membrane reactors, contribute toward reaching the yield required to make the process competitive at the industrial scale. Therefore, in this work, the conventional OCM packed bed reactor using a Mn-Na2WO4/SiO2 catalyst was experimentally compared with a membrane reactor, in which a symmetric MgO porous membrane was integrated. The beneficial effects of distributive feeding of oxygen along the membrane, which is the main advantage of the porous membrane reactor, were demonstrated, although no significant differences in terms of performance were observed because of the adverse effects of back-permeation prevailing in the experiments. A sensitivity analysis carried out on the effective diffusion coefficient also indicated the necessity of properly tuning the membrane properties to achieve the expected promising results, highlighting how this tuning could be addressed.

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