Development of a Pt/stainless steel mesh catalyst and its application in catalytic hydrogen combustion

Preez, S.P. du; Jones, Daniel R.; Bessarabov, Dmitri; Falch, Anzel; Quaresma, C. Mota das Neves; Dunnill, Charles W.

doi:10.1016/j.ijhydene.2019.08.168

Cited by 38 publications

(39 citation statements)

References 70 publications

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“…Catalysts containing dispersed nano-sized Pt particles are typically highly active and are used in various hydrogen-based technologies, e.g., electrochemical hydrogen compression, PEMFCs, PEM water electrolysis, and LOHC dehydrogenation [73,[128][129][130][131][132][133][134][135][136][137][138][139][140]. In general, reducing reactive metal loadings has been a primary research focus, and catalyst development (e.g., catalyst stability and durability) has received relatively limited attention.…”

Section: Chcmentioning

confidence: 99%

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Catalytic Hydrogen Combustion for Domestic and Safety Applications: A Critical Review of Catalyst Materials and Technologies

2021

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Spatial heating and cooking account for a significant fraction of global domestic energy consumption. It is therefore likely that hydrogen combustion will form part of a hydrogen-based energy economy. Catalytic hydrogen combustion (CHC) is considered a promising technology for this purpose. CHC is an exothermic reaction, with water as the only by-product. Compared to direct flame-based hydrogen combustion, CHC is relatively safe as it foregoes COx, CH4, and under certain conditions NOx formation. More so, the risk of blow-off (flame extinguished due to the high fuel flow speed required for H2 combustion) is adverted. CHC is, however, perplexed by the occurrence of hotspots, which are defined as areas where the localized surface temperature is higher than the average surface temperature over the catalyst surface. Hotspots may result in hydrogen’s autoignition and accelerated catalyst degradation. In this review, catalyst materials along with the hydrogen technologies investigated for CHC applications were discussed. We showed that although significant research has been dedicated to CHC, relatively limited commercial applications have been identified up to date. We further showed the effect of catalyst support selection on the performance and durability of CHC catalysts, as well as a holistic summary of existing catalysts used for various CHC applications and catalytic burners. Lastly, the relevance of CHC applications for safety purposes was demonstrated.

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Section: Chcmentioning

confidence: 99%

“…In a study by du Preez et al, a stainless-steel mesh (SSM) was used as catalyst support for Pt-assisted CHC [129]. The authors found that the SSM support did not stabilize Pt during CHC that resulted in Pt aggregation.…”

Section: Materials For Chcmentioning

confidence: 99%

Catalytic Hydrogen Combustion for Domestic and Safety Applications: A Critical Review of Catalyst Materials and Technologies

2021

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“…The dependence of combustible gas's concentration on the catalyst's stationary temperature is determined from the condition of stationary temperature (1) Fig. 1b illustrates that admixture critical ratio ai Y provoking catalytic self-ignition of gaseous admixture depends on efficient temperature value of gaseous mixture.…”

Section: The Resistance Of the Platinum Threadmentioning

confidence: 99%

“…The use of wire meshes, which is coated with a thin layer of platinum or metal oxide [1][2][3], has an advantage over powder catalysts primarily due to the ease of removing them from the reaction zone and the need for filtration. They are convenient to use in the heterogeneous catalysis's oxidation reactions of various gaseous substances.…”

Section: Introductionmentioning

confidence: 99%

Electric resistence hysteresis of platinum filament in chilled air/hydrogen mixtures

Калінчак

Черненко

Fedorenko

2020

Phys. Chem. Solid St.

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Ignition of gaseous combustible mixtures on catalytically active hot solid surfaces has numerous applications in many industrial processes and is a complex process that involves close interaction between surface processes and transfer processes in the gas mixture. In this paper, stable and critical states catalytic oxidation of hydrogen impurities in air on a platinum filament are considered. It is shown that filament temperature and its resistance depending on the mixture temperature and hydrogen concentration are of the hysteresis features. Within this hysteresis region, it is possible to achieve the catalytic combustion mode of hydrogen as a result preheating the catalyst filament above a certain critical value. The dependence of the limiting hydrogen's concentration on catalyst filament's diameter, above which is observed in the cold gas mixture self-sustaining catalytic combustion without electric current.

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“…This year, Scotland is also planning for its first ever hydrogen-powered homes; as a part of a pilot scheme (Sampson, 2020), a few homes will be incorporated with micro-CHP fuel cell technology. Interestingly, hydrogen can also be burnt as a flame or catalytically (du Preez, Jones et al, 2019;du Preez, Jones et al, 2020).…”

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confidence: 99%

From Renewable Energy to Renewable Fuel: A Sustainable Hydrogen Production

Mulla¹,

Dunnill²

2020

EES

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Hydrogen, a zero-emission fuel and the universal energy vector, can be easily produced from many different energy sources. It is a storable, transportable product that can be used on demand to overcome supply and demand imbalances. As of today, most of the hydrogen produced comes from natural gas; the production process itself is in fact not so pollution free. As the world is looking for a low carbon future, researchers have therefore been looking for more sustainable, environmentally friendly pathways of hydrogen production by using renewable energy sources such as solar and wind. Among the different methods, water electrolysis is a conventional and promising method of hydrogen production if renewable energy sources are to be employed in the process. Lots of progress has been made over the past few years in extending the use of hydrogen in different sectors. This perspective article briefly covers the recent developments in the hydrogen fuel-based projects and technologies and provides a description of the advantages of employing renewable energy sources for sustainable hydrogen production.

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Development of a Pt/stainless steel mesh catalyst and its application in catalytic hydrogen combustion

Cited by 38 publications

References 70 publications

Catalytic Hydrogen Combustion for Domestic and Safety Applications: A Critical Review of Catalyst Materials and Technologies

Catalytic Hydrogen Combustion for Domestic and Safety Applications: A Critical Review of Catalyst Materials and Technologies

Electric resistence hysteresis of platinum filament in chilled air/hydrogen mixtures

From Renewable Energy to Renewable Fuel: A Sustainable Hydrogen Production

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