Hydrogen production: Perspectives, separation with special emphasis on kinetics of WGS reaction: A state-of-the-art review

Saeidi, Samrand; Fazlollahi, Farhad; Najari, Sara; Iranshahi, Davood; Klemeš, Ji rí Jaromír; Baxter, Larry

doi:10.1016/j.jiec.2016.12.003

Cited by 111 publications

(51 citation statements)

References 222 publications

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“…has reviewed the micro and macro kinetics and reactor design of WGS and FT‐synthesis reactors. It also covers the integration of reaction and separation in catalytic membrane reactors for the production of ultrapure hydrogen from hydrogen containing gas mixtures using palladium‐based membranes . In another work, the authors have reviewed the development of WGS catalysts based on the nature of support and inferred that CeO 2 is a potential candidate due to its high OSC property .…”

Section: Introductionmentioning

confidence: 99%

Nickel‐based Catalysts for High‐temperature Water Gas Shift Reaction‐Methane Suppression

2018

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This article provides a critical review of Ni-based catalysts employed in high temperature and ultra-high temperature water gas shift reaction (WGS) for hydrogen production and methane suppression. The promotional role of nature and type of active metal and support for WGS reaction is discussed with respect to activity and selectivity. This review mainly covers the recent strategic catalytic formulations like promotion with alkali metals, alloying with another metal and core@-shell-like structures for suppressing methanation during WGS reaction. The change in nature and strength of CO adsorption over modified Ni-surfaces is discussed using available in situ CO-DRIFTS results. The various WGS reaction and CO methanation pathways are also presented together with insights gained from computational DFT studies.[a] Dr.

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Section: Introductionmentioning

confidence: 99%

Nickel‐based Catalysts for High‐temperature Water Gas Shift Reaction‐Methane Suppression

2018

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“…As indicated in Figure 1, in chemical looping steam methane reforming (CL-SMR) process, methane is converted to synthesis gas in contact with oxygen carriers in the fuel reactor while the reduced oxygen carriers is reoxidized in the air reactor [14,15]. The principle reactions that occur in the fuel reactor of CL-SMR process are as follows [16][17][18]:…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Application of Cerium-Incorporated SBA-16 Supported Ni-Based Oxygen Carrier in Cyclic Chemical Looping Steam Methane Reforming

et al. 2018

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Hydrogen, as a clean energy carrier, could be produced aided by cyclic oxidation-reduction of oxygen carriers (OCs) in contact with carbonaceous fuel in chemical looping steam methane reforming (CL-SMR) process. In this study, the cerium was incorporated into the SBA-16 support structure to synthesize the Ni/Ce-SBA-16 OC. The supports were synthesized using hydrothermal method followed by impregnation of Ni and characterized via low and wide angle X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), scanning electron microscopy (SEM), coupled with energy dispersive X-ray (EDX) spectroscopy, and transmission electron micrograph (TEM) techniques. In addition, the effect of various Si/Ce molar ratios (20-60) in the support structure, Ni loading (10-30 wt %), reaction temperature (500-750 • C), and life time of optimal oxygen carrier over 16 cycles were investigated. The results of wide angle XRD and SEM revealed that the incorporation of CeO 2 in the channels of SBA-16 caused the formation of nickel metallic particles with smaller size and prevents the coke formation. The results showed that OC with 15 wt % Ni and Si/Ce molar ratio of 40 (15Ni/Ce-SBA-16(40)) has the best performance when compared with other OCs in terms of catalytic activity and structural properties. The methane conversion of about 99.7% was achieved at 700 • C using 15Ni/Ce-SBA-16(40) OC. We anticipate that the strategy can be extended to investigate a variety of novel modified mesoporous silica as the supporting material for the Ni based OCs.

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“…The WGSR is used in the production of ammonia, methanol, hydrogen, and hydrocarbons (Ratnasamy & Wagner, 2009). Recently, there is a renewed industrial interest due to the development of fuel cell technology (Ayastuy et al, 2004;Choi & Stenger, 2003;Saeidi et al, 2016). The process is a reversible, moderately exothermic, equilibrium limited reaction, Eq.…”

Section: Introductionmentioning

confidence: 99%

PRODUCTION OF HYDROGEN BY WATER-GAS SHIFT REACTION ON Ru/C CATALYST

Queiroz

Barbosa

Abreu

2018

BJPG

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This work explores the catalytic performance of a 2% ruthenium carbon (Ru/C) catalyst in the low temperature water-gas shift reaction (WGSR). The catalyst synthetized was characterized with X-ray diffraction (XRD) and specific surface area (BET) methods. The gas mixture of 15% carbon monoxide + argon and water were used as reagents. The operations catalytic were performed in a fixed bed reactor over a temperature range of 453-553 K. A numerical fitting algorithm was developed for the estimation of the kinetic parameters in a power-law model for the rate velocity. At 553K, 80% CO conversion was achieved, under steady state. For the empirical rate equation, the activation energy determined from the experimental data, was 190 kJ/mol.

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Hydrogen production: Perspectives, separation with special emphasis on kinetics of WGS reaction: A state-of-the-art review

Cited by 111 publications

References 222 publications

Nickel‐based Catalysts for High‐temperature Water Gas Shift Reaction‐Methane Suppression

Nickel‐based Catalysts for High‐temperature Water Gas Shift Reaction‐Methane Suppression

Synthesis and Application of Cerium-Incorporated SBA-16 Supported Ni-Based Oxygen Carrier in Cyclic Chemical Looping Steam Methane Reforming

PRODUCTION OF HYDROGEN BY WATER-GAS SHIFT REACTION ON Ru/C CATALYST

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