Trimetallic Ni-Based Catalysts over Gadolinia-Doped Ceria for Green Fuel Production

Frontera, Patrizia; Macario, Anastasia; Malara, Angela; Santangelo, S.; Triolo, Claudia; Crea, F.; Antonucci, P.L.

doi:10.3390/catal8100435

Cited by 22 publications

(11 citation statements)

References 58 publications

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“…Modern biorefineries already use cellulose, hemicellulose and lignin (the three-key components of lignocellulose) as starting feedstocks for the preparation of furans, polyols, acids and aromatics [3][4][5]. However, other important platform chemicals can be easily extracted from biomass-derived wastes and residues and used as biobased building blocks for the preparation of value-added intermediates, products, renewable energy and biofuels, supporting and slowly replacing the well-assessed technologies that gave a great contribution to these fields [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

The Limonene Biorefinery: From Extractive Technologies to Its Catalytic Upgrading into p-Cymene

et al. 2021

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Limonene is a renewable cyclic monoterpene that is easily obtainable from citrus peel and it is commonly used as a nutraceutical ingredient, antibacterial, biopesticide and green extraction solvent as well as additive in healthcare, fragrance and food and beverage industries for its characteristic lemon-like smell. Indeed, the lack of toxicity makes limonene a promising bio-alternative for the development of a wide range of effective products in modern biorefineries. As a consequence, industrial demand largely exceeds supply by now. Limonene can be also used as starting substrate for the preparation of building block chemicals, including p-cymene that is an important intermediate in several industrial catalytic processes. In this contribution, after reviewing recent advances in the recovery of limonene from citrus peel and residues with particular attention to benign-by-design extractive processes, we focus on the latest results in its dehydrogenation to p-cymene via heterogeneous catalysis. Indeed, the latest reports evidence that the selective production of p-cymene still remains a scientific and technological challenge since, in order to drive the isomerization and dehydrogenation of limonene, an optimal balance between the catalyst nature/content and the reaction conditions is needed.

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Section: Introductionmentioning

confidence: 99%

The Limonene Biorefinery: From Extractive Technologies to Its Catalytic Upgrading into p-Cymene

et al. 2021

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“…Using biofuels to produce hydrogen means reducing net carbon dioxide emissions in energy production: hydrogen derived by biomass can be used in the solid oxide fuel cells (SOFCs) to the direct conversion of fuels into electricity [21,22]. Ethanol, glycerol, and biodiesel are the most promising candidates for hydrogen production due to their low toxicity and safety in handling, while the most efficient processes are the catalytic ones [23][24][25]. The most active species in these processes are noble metals and nickel-based catalysts, which are the typical catalysts for reforming reactions [26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

“…The presence of Mo, Re, or Pd as additional active species is the main solution to improve the sulfur resistance of the catalyst [23,27,[42][43][44][45].…”

Section: Introductionmentioning

confidence: 99%

Focus on Materials for Sulfur-Resistant Catalysts in the Reforming of Biofuels

2021

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The reforming of biofuels represents a promising technology for low carbon and renewable hydrogen production today. The core of the process is an active and stable catalyst, which can help to improve this technology and its efficiency. With this review, we aim to survey the more relevant literature on heterogeneous catalysts for the reforming of biofuels with improved sulfur tolerance. The review is structured into four main sections. Following the introduction, the fundamental aspects of sulfur poisoning are discussed. In the third section, the basic principles of the reforming of biofuels are reported, and finally, in the fourth section—the core of the review—recent progresses in the development of sulfur resistant catalysts are discussed, distinguishing the role of the metal (noble and non-noble) from that of the support.

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“…The carbon dioxide methanation reaction provides a solution for the storage and the transportation of low-grade energies. Moreover, it can potentially promote the abatement of polluting gas emissions since methane can be produced by simultaneously recycling carbon dioxide, CO 2 [1][2][3][4][5]. Indeed, carbon oxides are regarded the major pollutants in the atmosphere, and their decrement represents a pressing challenge necessary to detect and limit their harmful effects [6,7].…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Suitability of Engelhard Titanium Silicate as a Support for Ni-Catalysts in the Methanation Reaction

et al. 2021

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Methanation reaction of carbon dioxide is currently envisaged as a facile solution for the storage and transportation of low-grade energies, contributing at the same time to the mitigation of CO2 emissions. In this work, a nickel catalyst impregnated onto a new support, Engelhard Titanium Silicates (ETS), is proposed, and its catalytic performance was tested toward the CO2 methanation reaction. Two types of ETS material were investigated, ETS-4 and ETS-10, that differ from each other in the titanium content, with Si/Ti around 2 and 3% by weight, respectively. Catalysts, loaded with 5% of nickel, were tested in the CO2 methanation reaction in the temperature range of 300–500 °C and were characterized by XRD, SEM–EDX, N2 adsorption–desorption and H2-TPR. Results showed an interesting catalytic activity of the Ni/ETS catalysts. Particularly, the best catalytic performances are showed by Ni/ETS-10: 68% CO2 conversion and 98% CH4 selectivity at T = 400 °C. The comparison of catalytic performance of Ni/ETS-10 with those obtained by other Ni-zeolites catalysts confirms that Ni/ETS-10 catalyst is a promising one for the CO2 methanation reaction.

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Trimetallic Ni-Based Catalysts over Gadolinia-Doped Ceria for Green Fuel Production

Cited by 22 publications

References 58 publications

The Limonene Biorefinery: From Extractive Technologies to Its Catalytic Upgrading into p-Cymene

The Limonene Biorefinery: From Extractive Technologies to Its Catalytic Upgrading into p-Cymene

Focus on Materials for Sulfur-Resistant Catalysts in the Reforming of Biofuels

Investigation on the Suitability of Engelhard Titanium Silicate as a Support for Ni-Catalysts in the Methanation Reaction

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