A novel UiO-66 encapsulated 12-silicotungstic acid catalyst for dimethyl ether synthesis from syngas

Li, Fuping; Ao, Min; Pham, Gia Hung; Jin, Yun; Nguyen, Hoang M.; Alawi, Nabil Majd; Tadé, Moses O.; Liu, Shaomin

doi:10.1016/j.cattod.2019.07.057

Cited by 17 publications

(6 citation statements)

References 52 publications

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“…As evident from the above reported equations, SRM and DRM are highly endothermic reactions, while POM is a slightly exothermic one [57]. Each of the three mentioned reforming processes has its peculiarities, resulting in pros and cons in the adoption of a process with respect to the others.…”

Section: Mw-assisted Reformingmentioning

confidence: 93%

Electrified Hydrogen Production from Methane for PEM Fuel Cells Feeding: A Review

et al. 2022

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The greatest challenge of our times is to identify low cost and environmentally friendly alternative energy sources to fossil fuels. From this point of view, the decarbonization of industrial chemical processes is fundamental and the use of hydrogen as an energy vector, usable by fuel cells, is strategic. It is possible to tackle the decarbonization of industrial chemical processes with the electrification of systems. The purpose of this review is to provide an overview of the latest research on the electrification of endothermic industrial chemical processes aimed at the production of H2 from methane and its use for energy production through proton exchange membrane fuel cells (PEMFC). In particular, two main electrification methods are examined, microwave heating (MW) and resistive heating (Joule), aimed at transferring heat directly on the surface of the catalyst. For cases, the catalyst formulation and reactor configuration were analyzed and compared. The key aspects of the use of H2 through PEM were also analyzed, highlighting the most used catalysts and their performance. With the information contained in this review, we want to give scientists and researchers the opportunity to compare, both in terms of reactor and energy efficiency, the different solutions proposed for the electrification of chemical processes available in the recent literature. In particular, through this review it is possible to identify the solutions that allow a possible scale-up of the electrified chemical process, imagining a distributed production of hydrogen and its consequent use with PEMs. As for PEMs, in the review it is possible to find interesting alternative solutions to platinum with the PGM (Platinum Group Metal) free-based catalysts, proposing the use of Fe or Co for PEM application.

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Section: Mw-assisted Reformingmentioning

confidence: 93%

Electrified Hydrogen Production from Methane for PEM Fuel Cells Feeding: A Review

et al. 2022

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“…The high-pressure experimental unit used in catalytic experiments [8]; see Figure 1. The three main subsystems of this apparatus were the gas feeding mechanism, the reaction mechanism, and the separation and analysis mechanism.…”

Section: Fisher-tropsch Reactionmentioning

confidence: 99%

“…In this method, a syngas combination of CO and H₂ is converted using a variety of catalysts [4][5][6]. In the Fischer-Tropsch procedure, reaction factors such as temperature and the hydrogen-to-carbon monoxide ratio are important; Pressure and space velocity are all important, in addition to catalyst type and their physical properties, primarily determine the distribution of products [7,8]. Catalysts for this reaction can be different metals like Fe, Co, Ni, and Ru [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Kinetic estimation of Fischer–Tropsch synthesis using biogas-derived feedstocks over Ni/Al2O3 catalyst

Alawi,

AL-Zuhairi,

Nguyen

et al. 2023

Chem. Pap.

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In this study, the kinetics of the Fischer-Tropsch process (also known as FTS) were investigated using feedstocks produced from biogas. For the kinetic testing, a differential fixed-bed reactor was utilized to operate the Ni/Al2O3 catalyst produced using precipitation procedures. Experiments were carried out with a variety of settings for the working circumstances, such as reaction temperatures ranging from 543 to 563 °K, H2:CO ratios ranging from 0.5 to 3, a pressure of 3.0 megapascals, with (GHSV) a gas hourly space velocity of 3500 (1/h). The reaction kinetics within this range of conditions can be modelled in a precise and accurate way thanks to the derived kinetic parameters. The FT reaction hypothesized mechanism uses the Langmuir-Hinshelwood-Hougen-Watson theory, which predicts that carbon monoxide and hydrogen will have an adsorption behaviour. The kinetic data obtained in this investigation were effectively modelled using a straightforward equation, which is as follows:This model implies that essential kinetic processes, such as CO dissociation by contact with adsorbed hydrogen, have already occurred. The first stage in the hydrogenation process is presumed to be fast and reversible, whereas the second step is presumed to be sluggish and rate-determining.

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“… Ideally, DRM can produce high purity syngas with a H 2 /CO ratio of 1 . Such syngas composition is favorable for the production of long-chain hydrocarbon via the FT process . However, DRM struggles with the long-standing challenge related to the catalyst decay that is caused by coke deposition .…”

Section: Introductionmentioning

confidence: 99%

“…3 Such syngas composition is favorable for the production of long-chain hydrocarbon via the FT process. 4 However, DRM struggles with the long-standing challenge related to the catalyst decay that is caused by coke deposition. 5 The addition of steam (H 2 O) as a co-reactant into the DRM feed mixture, which is so-called bi-reforming, has been proved as an industrial practice to achieve the desired syngas ratio effectively.…”

Section: Introductionmentioning

confidence: 99%

Microwave-Assisted Dry and Bi-reforming of Methane over M–Mo/TiO₂ (M = Co, Cu) Bimetallic Catalysts

et al. 2020

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Microwave (MW) methodology has opened up new opportunities for chemical reactions by providing novel routes that are not practical by conventional heating. This paper reports on M–Mo bimetallic catalysts (M = Co or Cu) supported on TiO2 for methane reforming, i.e., dry reforming of methane (DRM) and bi-reforming of methane under MW irradiation. Experimental results displayed outstanding activity of such M–Mo/TiO2 catalysts, on which high reaction efficiency of methane reforming can be sustained at a much lower MW power of 100 W compared to literature results of 200 W. The molar ratio of M/Mo at 1.0 (CoMo1 and CuMo1) displayed the highest catalytic activity for MW-assisted methane reforming under all tested conditions. For DRM, about 81% CH4 and 86% CO2 were converted to syngas with a H2/CO ratio of 0.9 over the CoMo1 catalyst while the CuMo1 catalyst translated 76% CH4 and 62% CO2 into syngas with a H2/CO ratio of 0.8. In the presence of H2O (steam), the H2/CO ratio higher than 2, i.e., 2.2, could be obtained over the Co–Mo catalyst with an input steam-to-methane (S/C) molar ratio of 0.1, while the CuMo1 counterpart required an S/C of 0.2 introduced into the feed to produce such a syngas ratio (H2/CO) of 2.1. The reason behind the excellent performance of the Co–Mo/TiO2 catalyst is the good exposure of the well-defined hexagonal MW absorber. Meanwhile, the formation of a high dielectric layer of MoO2 surrounding active Cu0 can promote the MW absorption of the Cu–Mo/TiO2 catalyst and thereby enhance its catalytic performance. The Co–Mo catalyst exhibited better activity than the Cu–Mo samples given that the magnetic properties of Co particles led to a higher MW absorption ability. Both M–Mo/TiO2 catalysts exhibited brilliant stability under MW irradiation.

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A novel UiO-66 encapsulated 12-silicotungstic acid catalyst for dimethyl ether synthesis from syngas

Cited by 17 publications

References 52 publications

Electrified Hydrogen Production from Methane for PEM Fuel Cells Feeding: A Review

Electrified Hydrogen Production from Methane for PEM Fuel Cells Feeding: A Review

Kinetic estimation of Fischer–Tropsch synthesis using biogas-derived feedstocks over Ni/Al2O3 catalyst

Microwave-Assisted Dry and Bi-reforming of Methane over M–Mo/TiO₂ (M = Co, Cu) Bimetallic Catalysts

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A novel UiO-66 encapsulated 12-silicotungstic acid catalyst for dimethyl ether synthesis from syngas

Cited by 17 publications

References 52 publications

Electrified Hydrogen Production from Methane for PEM Fuel Cells Feeding: A Review

Electrified Hydrogen Production from Methane for PEM Fuel Cells Feeding: A Review

Kinetic estimation of Fischer–Tropsch synthesis using biogas-derived feedstocks over Ni/Al2O3 catalyst

Microwave-Assisted Dry and Bi-reforming of Methane over M–Mo/TiO2 (M = Co, Cu) Bimetallic Catalysts

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Product

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Microwave-Assisted Dry and Bi-reforming of Methane over M–Mo/TiO₂ (M = Co, Cu) Bimetallic Catalysts