Experimental and simulation studies of the production of renewable hydrogen through ethanol steam reforming in a large-scale catalytic membrane reactor

Ma, Rui; Castro-Dominguez, Bernardo; Mardilovich, Ivan P.; Dixon, Anthony G.; Hua, Yi

doi:10.1016/j.cej.2016.06.021

Cited by 64 publications

(18 citation statements)

References 44 publications

(63 reference statements)

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“…Today,n early 95 %o fh ydrogen generated is produced by thermalc racking of fossil fuels. [217,218] As such suitable catalytic systemsa re required to allow its reliable low-cost synthesis from water.…”

Section: Hydrogene Volution and Consumption-[fefe]-and [Nife]-hydrogementioning

confidence: 99%

From Enzymes to Functional Materials—Towards Activation of Small Molecules

Möller

Piontek

Miller

et al. 2017

Chemistry A European J

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The design of non-noble metal-containing heterogeneous catalysts for the activation of small molecules is of utmost importance for our society. While nature possesses very sophisticated machineries to perform such conversions, rationally designed catalytic materials are rare. Herein, we aim to raise the awareness of the overall common design and working principles of catalysts incorporating aspects of biology, chemistry, and material sciences.

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Section: Hydrogene Volution and Consumption-[fefe]-and [Nife]-hydrogementioning

confidence: 99%

From Enzymes to Functional Materials—Towards Activation of Small Molecules

Möller

Piontek

Miller

et al. 2017

Chemistry A European J

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“…Additionally, the flux across the membrane (

) was based on Sieverts’ law as follows [ 2 , 29 ]:

where

and

represent the hydrogen partial pressure at the retentate side and the permeate side, respectively, and

is the permeance of the membrane obtained experimentally. Furthermore, the calculation of binary fluid diffusion coefficients (

) was estimated according to standard engineering procedures [ 30 ]:

where

is the molecular weight of component i, P is the pressure of the system,

denotes the parameters of the Lennard–Jones potential between molecules A and B and

represents the collision integral for diffusion.…”

Section: Methodsmentioning

confidence: 99%

Integration of Methane Steam Reforming and Water Gas Shift Reaction in a Pd/Au/Pd-Based Catalytic Membrane Reactor for Process Intensification

Castro-Dominguez

Mardilovich

et al. 2016

Membranes

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Palladium-based catalytic membrane reactors (CMRs) effectively remove H2 to induce higher conversions in methane steam reforming (MSR) and water-gas-shift reactions (WGS). Within such a context, this work evaluates the technical performance of a novel CMR, which utilizes two catalysts in series, rather than one. In the process system under consideration, the first catalyst, confined within the shell side of the reactor, reforms methane with water yielding H2, CO and CO2. After reforming is completed, a second catalyst, positioned in series, reacts with CO and water through the WGS reaction yielding pure H2O, CO2 and H2. A tubular composite asymmetric Pd/Au/Pd membrane is situated throughout the reactor to continuously remove the produced H2 and induce higher methane and CO conversions while yielding ultrapure H2 and compressed CO2 ready for dehydration. Experimental results involving (i) a conventional packed bed reactor packed (PBR) for MSR, (ii) a PBR with five layers of two catalysts in series and (iii) a CMR with two layers of two catalysts in series are comparatively assessed and thoroughly characterized. Furthermore, a comprehensive 2D computational fluid dynamics (CFD) model was developed to explore further the features of the proposed configuration. The reaction was studied at different process intensification-relevant conditions, such as space velocities, temperatures, pressures and initial feed gas composition. Finally, it is demonstrated that the above CMR module, which was operated for 600 h, displays quite high H2 permeance and purity, high CH4 conversion levels and reduced CO yields.

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“…In some cases, 1D models have been used either as a preliminary step towards the development of more complete 2D models, or as simplified descriptions, to be used when the operating conditions fall within a pre-determined range [ 24 , 64 , 68 , 69 ]. More commonly, they have been employed to describe experimental results [ 5 , 6 , 23 ].…”

Section: 1d Modelsmentioning

confidence: 99%

“…Membrane reactors (MRs) have received significant attention for their potential use in decentralized hydrogen production systems, allowed by the integrated production and separation of hydrogen [ 1 , 2 , 3 ]. The reactions most commonly carried out are those of steam reforming of different carbon-based feeds such as methane [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ], methanol [ 15 , 16 , 17 , 18 , 19 , 20 , 21 ], ethanol [ 22 , 23 , 24 , 25 , 26 , 27 ], biogas [ 28 , 29 ], and glycerol [ 30 , 31 , 32 ]; water-gas shift [ 33 , 34 , 35 , 36 , 37 , 38 ]; ammonia decomposition [ 39 , 40 ]; and the dehydrogenation of alkanes [ 41 , 42 , 43 , 44 ]. In all cases the equilibrium of the reaction is shifted by removing hydrogen through a membrane.…”

Section: Introductionmentioning

confidence: 99%

Modeling Fixed Bed Membrane Reactors for Hydrogen Production through Steam Reforming Reactions: A Critical Analysis

2018

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Membrane reactors for hydrogen production have been extensively studied in the past years due to the interest in developing systems that are adequate for the decentralized production of high-purity hydrogen. Research in this field has been both experimental and theoretical. The aim of this work is two-fold. On the one hand, modeling work on membrane reactors that has been carried out in the past is presented and discussed, along with the constitutive equations used to describe the different phenomena characterizing the behavior of the system. On the other hand, an attempt is made to shed some light on the meaning and usefulness of models developed with different degrees of complexity. The motivation has been that, given the different ways and degrees in which transport models can be simplified, the process is not always straightforward and, in some cases, leads to conceptual inconsistencies that are not easily identifiable or identified.

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Experimental and simulation studies of the production of renewable hydrogen through ethanol steam reforming in a large-scale catalytic membrane reactor

Cited by 64 publications

References 44 publications

From Enzymes to Functional Materials—Towards Activation of Small Molecules

From Enzymes to Functional Materials—Towards Activation of Small Molecules

Integration of Methane Steam Reforming and Water Gas Shift Reaction in a Pd/Au/Pd-Based Catalytic Membrane Reactor for Process Intensification

Modeling Fixed Bed Membrane Reactors for Hydrogen Production through Steam Reforming Reactions: A Critical Analysis

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