Experimental and numerical investigations on structured catalysts for methane steam reforming intensification

Palma, Vincenzo; Ricca, Antonio; Meloni, Eugenio; Martino, Marco; Miccio, Marino; Ciambelli, Paolo

doi:10.1016/j.jclepro.2015.09.004

Cited by 40 publications

(14 citation statements)

References 28 publications

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“…In particular, the results highlighted that the preliminary deposition of a ceria-based washcoat on the support increases the specific surface area, thus allowing a better dispersion of the active species and consequently better catalytic activity, particularly at lower temperatures. Numerical models, which were developed and implemented by the software COMSOL Multiphysics, were used to compare these two geometries, and the results were in a quite good agreement with the kinetic analysis and experimental results, thus confirming the better performances of the WF configuration with respect to the FT [94]. These preliminary results demonstrated that the use of high thermal conductivity monolithic catalyst in wall flow configuration allowed to overcome the energy and mass limitations, which are the main bottlenecks of the commercial steam reforming catalysts.…”

Section: Ceramic Carrierssupporting

confidence: 56%

“…The research group of the University of Salerno very deeply investigated the possibility to intensify the MSR by using Ni based catalysts supported on silicon carbide (SiC) and cordierite monoliths. The authors, by setting-up an advanced experimental reaction system, preliminarily studied the influence of the geometric configuration of the monoliths, as well as the Ni loading and the washcoat presence [94]. The experimental tests showed that the monolith with "wall flow" (WF, the parallel channels are alternatively plugged at each end in order to force the reaction stream to flow through the inner porous walls) configuration had better performance in terms of hydrogen yields at the same temperature and GHSV with respect to the "flow through" (FT, the channels are open on both sides) configuration.…”

Section: Ceramic Carriersmentioning

confidence: 99%

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A Short Review on Ni Based Catalysts and Related Engineering Issues for Methane Steam Reforming

2020

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Hydrogen is an important raw material in chemical industries, and the steam reforming of light hydrocarbons (such as methane) is the most used process for its production. In this process, the use of a catalyst is mandatory and, if compared to precious metal-based catalysts, Ni-based catalysts assure an acceptable high activity and a lower cost. The aim of a distributed hydrogen production, for example, through an on-site type hydrogen station, is only reachable if a novel reforming system is developed, with some unique properties that are not present in the large-scale reforming system. These properties include, among the others, (i) daily startup and shutdown (DSS) operation ability, (ii) rapid response to load fluctuation, (iii) compactness of device, and (iv) excellent thermal exchange. In this sense, the catalyst has an important role. There is vast amount of information in the literature regarding the performance of catalysts in methane steam reforming. In this short review, an overview on the most recent advances in Ni based catalysts for methane steam reforming is given, also regarding the use of innovative structured catalysts.

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Section: Ceramic Carrierssupporting

confidence: 56%

Section: Ceramic Carriersmentioning

confidence: 99%

A Short Review on Ni Based Catalysts and Related Engineering Issues for Methane Steam Reforming

2020

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“…A number of studies focusing on noble metal catalysts for methane reforming are available in the literature, including evaluation of bimetallic catalysts prepared by adding a small portion of rhodium, the most active ingredient for activating methane, to another noble metal [25][26][27][28][29][30][31][32][33][34][35][36]. Our previous publications detailed the performance of substrate-coated Pd-Rh catalysts developed for the SBR process [2,[9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Effects of CeZrO2–Al2O3 support composition of metal-foam-coated Pd–Rh catalysts for the steam-biogas reforming reaction

Roy

Song

Kim

et al. 2018

Journal of Industrial and Engineering Chemistry

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Biogas conversion to syngas by steam reforming was studied over metal-foam-coated Pd-Rh catalysts with variable CeZrO 2-Al 2 O 3 support compositions. Catalysts with a higher CeZrO 2 /Al 2 O 3 ratio exhibited greater CH 4 and CO 2 conversions and higher H 2 /CH 4 yields, while displaying lower H 2 /CO ratios and reduced coke formation. Catalytic stability tests over 200 h showed CH 4 and CO 2 conversion rates of 93-97% and 0-5%, respectively. CeZrO 2-modification of the catalyst leads to reduction in the BET area and metal dispersion. Sintering was observed in used catalysts; however there was no clear correlation between the extent of morphological deterioration and the CeZrO 2 /Al 2 O 3 ratio of the catalyst support.

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“…17 SMR is a matured technology used commercially for hydrogen production. 21 An comprehensive review by Iulianelli et al 22 revealed that several catalysts have been developed and utilized for SMR to produce H 2 . 19 CH 4 The SMR is highly temperature-dependent that occurs at a temperature range of 800 to 1000°C over Nickel catalysts.…”

Section: Introductionmentioning

confidence: 99%

“…20 Hence, catalyst deactivation has been the major challenges that have been confronting the SMR process. 21 An comprehensive review by Iulianelli et al 22 revealed that several catalysts have been developed and utilized for SMR to produce H 2 . 19 These catalysts are mainly supported Ni catalysts, and few noble metals such as Ru, Rh, Pd, Pt, and Ir.…”

Section: Introductionmentioning

confidence: 99%

Experimental and optimization studies of hydrogen production by steam methane reforming over lanthanum strontium cobalt ferrite supported Ni catalyst

et al. 2019

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Summary Over the years, research focused has been on the development of active and stable catalysts for hydrogen (H2) production by steam methane reforming (SMR). However, there is less attention on the individual and interaction effect of key process parameters that influence the catalytic performance of such catalysts and how to optimize them. The main objective of this study is to investigate the individual and interaction effects of key parameters such as methane partial pressure ( PCH4true) (10‐30 kPa), steam partial pressure ( PH2normalO()gtrue) (10‐30 kPa), and reaction temperature (T) (750‐850°C) on H2 yield and methane (CH4) conversion during SMR using Box‐Behnken experimental design (BBD) and response surface methodology. The H2 production was catalyzed using Ni/LSCF prepared by wet impregnation method. The evaluation of the Ni/LSCF using different instrument techniques revealed that the catalyst exhibited excellent physicochemical properties suitable for SMR. Response surface models showing the individual and interaction effect of each of the parameters on the H2 yield and CH4 conversion were obtained using the set of data obtained from the BBD matrix. The three parameters were found to have significant effects on the H2 yield and CH4 conversion. At the highest desirability of 0.8994, maximum H2 yield and CH4 conversion of 89.77% and 89.01%, respectively, were obtained at optimum conditions of 30 kPa, 28.86 kPa, and 850°C for PCH4, PH2normalO()g, and temperature, respectively. The predicted values of the responses from the response surface models were found to be in good agreement with the experimental values. At optimum conditions, the catalyst was found to be stable up to 390 minutes with time on stream. The characterization of the used catalyst using thermogravimetric analysis, scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, and transmission electron microscopy showed some evidence deposition of a small amount of carbon on the catalyst surface.

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Experimental and numerical investigations on structured catalysts for methane steam reforming intensification

Cited by 40 publications

References 28 publications

A Short Review on Ni Based Catalysts and Related Engineering Issues for Methane Steam Reforming

A Short Review on Ni Based Catalysts and Related Engineering Issues for Methane Steam Reforming

Effects of CeZrO2–Al2O3 support composition of metal-foam-coated Pd–Rh catalysts for the steam-biogas reforming reaction

Experimental and optimization studies of hydrogen production by steam methane reforming over lanthanum strontium cobalt ferrite supported Ni catalyst

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