New low cost mesoporous silica (MSN) as a promising support of Ni-catalysts for high-hydrogen generation via dry reforming of methane (DRM)

Mourhly, Asmaa; Kacimi, Mohammed; Halim, Mohammed; Arsalane, Saı̈d

doi:10.1016/j.ijhydene.2018.05.093

Cited by 39 publications

(8 citation statements)

References 60 publications

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“…From the comparative analysis, case 2 was found to be an attractive approach for hydrogen production with lower costs and shows potential to resolve the global plastic waste issue. The catalytic plastic gasification could also further reduce the hydrogen production cost because it is usually performed at a lower temperature [ 58 ]. Dan et al [ 59 ] performed a study converting plastic wastes and biomass to hydrogen using Ni/γ-Al 2 O 3 as a catalyst with a temperature of 800 °C.…”

Section: Resultsmentioning

confidence: 99%

Simulation and Modelling of Hydrogen Production from Waste Plastics: Technoeconomic Analysis

et al. 2022

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The global energy demand is expected to increase by 30% within the next two decades. Plastic thermochemical recycling is a potential alternative to meet this tremendous demand because of its availability and high heating value. Polypropylene (PP) and polyethylene (PE) are considered in this study because of their substantial worldwide availability in the category of plastic wastes. Two cases were modeled to produce hydrogen from the waste plastics using Aspen Plus®. Case 1 is the base design containing three main processes (plastic gasification, syngas conversion, and acid gas removal), where the results were validated with the literature. On the other hand, case 2 integrates the plastic gasification with steam methane reforming (SMR) to enhance the overall hydrogen production. The two cases were then analyzed in terms of syngas heating values, hydrogen production rates, energy efficiency, greenhouse gas emissions, and process economics. The results reveal that case 2 produces 5.6% more hydrogen than case 1. The overall process efficiency was enhanced by 4.13%. Case 2 reduces the CO2 specific emissions by 4.0% and lowers the hydrogen production cost by 29%. This substantial reduction in the H2 production cost confirms the dominance of the integrated model over the standalone plastic gasification model.

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Section: Resultsmentioning

confidence: 99%

Simulation and Modelling of Hydrogen Production from Waste Plastics: Technoeconomic Analysis

et al. 2022

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“…The catalytic activity of the above-discussed DRM catalysts and the other set of 54 DRM catalysts − in terms of the H 2 yield, H 2 formation rate, and CO formation is shown in Table S3. The calculation details for hydrogen and CO formation rates are described in Supporting Information S2.…”

Section: Discussionmentioning

confidence: 99%

Barium-Promoted Yttria–Zirconia-Supported Ni Catalyst for Hydrogen Production via the Dry Reforming of Methane: Role of Barium in the Phase Stabilization of Cubic ZrO₂

Al‐Fatesh

Patel²,

Srivastava

et al. 2022

ACS Omega

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Developing cost-effective nonprecious active metal-based catalysts for syngas (H 2 /CO) production via the dry reforming of methane (DRM) for industrial applications has remained a challenge. Herein, we utilized a facile and scalable mechanochemical method to develop Ba-promoted (1–5 wt %) zirconia and yttria–zirconia-supported Ni-based DRM catalysts. BET surface area and porosity measurements, infrared, ultraviolet–visible, and Raman spectroscopy, transmission electron microscopy, and temperature-programmed cyclic (reduction–oxidation–reduction) experiments were performed to characterize and elucidate the catalytic performance of the synthesized materials. Among different catalysts tested, the inferior catalytic performance of 5Ni/Zr was attributed to the unstable monoclinic ZrO 2 support and weakly interacting NiO species whereas the 5Ni/YZr system performed better because of the stable cubic ZrO 2 phase and stronger metal–support interaction. It is established that the addition of Ba to the catalysts improves the oxygen-endowing capacity and stabilization of the cubic ZrO 2 and BaZrO 3 phases. Among the Ba-promoted catalysts, owing to the optimal active metal particle size and excess ionic CO 3 2– species, the 5Ni4Ba/YZr catalyst demonstrated a high, stable H 2 yield (i.e., 79% with a 0.94 H 2 /CO ratio) for up to 7 h of time on stream. The 5Ni4Ba/YZr catalyst had the highest H 2 formation rate, 1.14 mol g –1 h –1 and lowest apparent activation energy, 20.07 kJ/mol, among all zirconia-supported Ni catalyst systems.

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“…One of the most important properties of foundry sand is stability at high temperatures [29][30][31]. e chemical composition of the foundry sand is mainly SiO 2 , indicating that the foundry sand is stable at high temperatures.…”

Section: Chemical Composition Analysismentioning

confidence: 99%

Thermal Decomposition Behaviour of Foundry Sand for Cast Steel in Nitrogen and Air Atmospheres

Chen

Zhang

et al. 2020

Mathematical Problems in Engineering

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Sand casting is the most widely used casting technique, known for ages, even since ancient times. The main goal of this study was to determine the thermal decomposition behaviour of foundry sand for cast steel. We first tested the basic properties of foundry sand, including its proximate analysis, chemical composition, and particle size characteristics; we next monitored the thermal decomposition behaviour of foundry sand for cast steel via simultaneous thermal analysis. We focused on the mass loss of foundry sand for cast steel at different heating rates in nitrogen and air atmospheres. We adopted a novel method to calculate the volatile release characteristic index of foundry sand. The volatile content of foundry sand for cast steel was very low, so the volatile release characteristic index of the sand could not be strictly calculated according to this concept. We calculated the thermal decomposition kinetics parameters of foundry sand, namely, the activation energy and preexponential factor, under kinetics theory. To thoroughly test the fitting effect, we conducted a single-factor analysis of variance on the source of error. The results showed that the independent variable has a significant influence on the dependent variable and that the fitting equation we selected is feasible and effective.

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New low cost mesoporous silica (MSN) as a promising support of Ni-catalysts for high-hydrogen generation via dry reforming of methane (DRM)

Cited by 39 publications

References 60 publications

Simulation and Modelling of Hydrogen Production from Waste Plastics: Technoeconomic Analysis

Simulation and Modelling of Hydrogen Production from Waste Plastics: Technoeconomic Analysis

Barium-Promoted Yttria–Zirconia-Supported Ni Catalyst for Hydrogen Production via the Dry Reforming of Methane: Role of Barium in the Phase Stabilization of Cubic ZrO₂

Thermal Decomposition Behaviour of Foundry Sand for Cast Steel in Nitrogen and Air Atmospheres

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New low cost mesoporous silica (MSN) as a promising support of Ni-catalysts for high-hydrogen generation via dry reforming of methane (DRM)

Cited by 39 publications

References 60 publications

Simulation and Modelling of Hydrogen Production from Waste Plastics: Technoeconomic Analysis

Simulation and Modelling of Hydrogen Production from Waste Plastics: Technoeconomic Analysis

Barium-Promoted Yttria–Zirconia-Supported Ni Catalyst for Hydrogen Production via the Dry Reforming of Methane: Role of Barium in the Phase Stabilization of Cubic ZrO2

Thermal Decomposition Behaviour of Foundry Sand for Cast Steel in Nitrogen and Air Atmospheres

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Barium-Promoted Yttria–Zirconia-Supported Ni Catalyst for Hydrogen Production via the Dry Reforming of Methane: Role of Barium in the Phase Stabilization of Cubic ZrO₂