Antonio Vita

Antonio Vita
Italian National Research Council | CNR · Institute for Advanced Energy Technologies "Nicola Giordano" ITAE

Chemistry

About

83
Publications
11,626
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2,290
Citations
Introduction
PRIN 2010 - 2011 (IFOAMS) Intensification of Catalytic Processes for Clean Energy, Low-Emission Transport and Sustainable Chemistry using Open-Cell Foams as Novel Advanced Structured Materials Role: Head of the ITAE Operative Unit PON (TESEO, Proj. REMA) Development and characterization of a diesel reforming unit properly sized to feeding a solid oxide (SOFC) fuel cells system (0.5-1 kW) Role: Head of the ITAE Operative Unit
Additional affiliations
January 2013 - present
Italian National Research Council
Position
  • Researcher , Head of the Fuel Processing Materials And Technologies for Energetic and Environmental applications (FPMaTEE) Research Team
January 2000 - December 2012
Italian National Research Council
Position
  • Researcher

Publications

Publications (83)
Article
Onboard diesel reformer integrated with solid oxide fuel cell (SOFC) unit offers potential for high energy conversion efficiency and low emission levels on seagoing transport, avoiding cost associated with hydrogen storage and infrastructure. However, the development of active and stable liquid hydrocarbon-reforming catalyst still remains one of th...
Article
Ni(7.5 wt.%)/CeO2 and Ni(7.5 wt.%)-Rh(0.5 wt.%)/CeO2 powders (previously prepared by solution combustion synthesis) were washcoated on cordierite monolith and alumina open-cell foam by means of support dip-coating into acid-free catalyst dispersion. Catalytic performances toward the steam reforming (SR) and the oxy-steam reforming (OSR) of biogas w...
Article
A series of nanosized Ni/CeO2 catalysts were prepared by Solution Combustion Synthesis (SCS) varying the fuel (oxalyldihydrazide, urea, carbohydrazide and glycerol), the cerium precursor (cerium nitrate and cerium ammonium nitrate) and the nickel loading (ranging between 3.1 and 15.6 wt%). The obtained powders were characterized by X-ray Diffractio...
Article
Production of CH4 by methanation of biogas provides a promising route towards sustainable energy production for the future. Utilization of biogas from biomass as CO2 source combines the advantage of reduction of greenhouse gas emissions producing a fuel with high energy density. In this study we apply a dip-spin coating method for washcoating Ni(7....
Article
Full-text available
A complete thermo-economic analysis on a cutting-edge Power-to-Gas system that comprises innovative technologies (a Solid Oxide Electrolyte Cell co-electrolyzer and an experimental methanator) and coupled with a renewable generator is provided in this study. The conducted economic analysis (which has never been applied to this typology of system) i...
Article
This work investigates and compares the performances over the CO2 methanation reaction of two structured catalysts based on high thermal conductivity silicon carbide (SiC) and low thermal conductivity alumina (Al2O3) 40 PPI Open Cell Foams. The active phase (25wt%Ni/20wt%CeO2-55wt%ZrO2) was coated by the In Situ-Solution Combustion Deposition (IS-S...
Preprint
Full-text available
The scope of this Special Issue is to explore the potential of ammonia as a clean carrier that could be used for energy. With the global transition from fossil fuels to intermittent renewable energy sources, there is a need for the long-term storage and long-range transmission of energy, for which ammonia is a perfect fit. Specifically, this Specia...
Article
The glycerol steam reforming (GSR) reaction for hydrogen production was investigated over Rh-based catalysts supported on γ-Al2O3 modified with CeO2, MgO or La2O3. High specific surface area mesoporous supports (Al2O3, CeO2–Al2O3, MgO–Al2O3 and La2O3–Al2O3) were synthesized by the surfactant-assisted co-precipitation method using cetyltrimethylammo...
Article
Full-text available
Hydrogen production from dry reforming of methane (DRM) was investigated on different Nickel based catalysts deposited on MgAl2O4. MgAl2O4 spinel was prepared using γ-Alumina supplied from different manufacturers (Sigma Aldrich, Alfa Aesar and Degussa) with low and high specific surface area. Moreover, the influence of different parameters on the c...
Article
Full-text available
Among the metal-oxides, ceria represents one of the most promising materials for chemical transformations mainly for environmental applications and energy conversion systems [...]
Article
The techno-economic feasibility of three biogas utilization processes was assessed through computer simulations on commercial process simulator Aspen HYSYS: HPC (biogas to methanol), BioCH4 (biogas to biomethane) and CHP (biogas to heat & electricity). The last two processes are already used commercially with the aid of subsidy policies. The econom...
Article
The kinetic behaviour of Ce0.70La0.20Ni0.10O2-δ catalyst during methane dry reforming reaction was investigated in a fixed bed reactor in the temperature range of 923-1023K with the partial pressure of CH4 and CO2 ranging between 5 to 50 kPa. The experimental data were fitted using the empirical Power-Law rate equation and Langmuir-Hinshelwood kine...
Article
This paper investigates the performance of 25 wt% Ni/GDC catalyst supported on ceramic monolith (MO) and open-cell foam (FO) towards the conversion of CO 2 to CH 4 at bench-scale level (CO 2 flow rate = 78-319 NL·h −1). Both structured catalysts were prepared by the In Situ-Solution Combustion Deposition (IS-SCD) method to coat thin, uniform and hi...
Article
Methanation of carbon oxides (CO and CO2) was studied over Ni-based catalysts supported on CeO2, Al2O3, and Y2O3 oxides. Catalysts were synthesized by solution combustion synthesis and characterized by N2-physisorption, XRD, H2-TPR, TEM, CO-chemisorption, UV–vis DRS, XPS, and CO2-TPD. The effect of reaction temperature (250−500 °C) was investigated...
Article
Full-text available
An environmentally friendly Auxiliary Power Unit (APU) requires catalysts operating in cyclic mode, producing H2 at a steady rate with high CO2 selectivity and minimum CO clean-up. Here, the catalyst 1% Pt/CeO2 was synthesized using the method of solution combustion synthesis (SCS) method, and investigated towards methane steam reforming (MSR) reac...
Article
Full-text available
In this work, monometallic (1 wt% of Ru or 5 wt% of Ni) and bimetallic catalysts (1 wt% Ru-5 wt.% Ni) deposited on alumina (Al2O3), magnesium aluminate spinel (MgAl2O4), and yttria-stabilized zirconia (YSZ) were prepared by wet impregnation. The synthesis method of MgAl2O4 was optimized and a well crystallized phase with high specific surface area...
Article
The production of hydrogen via steam reforming (SR) of simulated bio-oil (glycerol, syringol, n-butanol, m-xylene, m-cresol, and furfural) was investigated over Ni/CeO 2 -Al 2 O 3 and Me-Ni/CeO 2 -Al 2 O 3 (Me = Rh, Ru) catalysts. Monometallic (Ni) and bimetallic (Rh-Ni and Ru-Ni) catalysts were prepared by the wetness impregnation technique of the...
Article
Performance of an innovative storage system for renewable energy, based on the Power-to-Gas concept are numerically predicted. The investigated system is composed by a high temperature co-electrolyzer of Solid Oxide Electrolyte Cell technology and an experimental methanation section, based on structured catalyst, suitable for high temperature opera...
Article
Full-text available
: The application of ceramic foams as structured catalyst supports is clearly expanding due to faster mass/heat transfer and higher contact efficiency than honeycomb monoliths and, mainly, packed beds. In this paper, alumina open-cell foams (OCFs) with different pore density (20, 30 and 40 ppi) were coated with Rh/CeO2 catalyst via a two steps synt...
Article
In this work, the Me/CeO2 (Me = Rh, Ni) catalytic phase was in-situ deposited by the Solution Combustion Synthesis (SCS) on commercial cordierite monolith (500 cpsi) and alumina open-cell foams (20,30,40 ppi). All the coated structures were characterized by SEM/EDX to analyze the morphological characteristics of the coated films; the mechanical sta...
Conference Paper
Although the biodiesel industry has grown at a phenomenal 23% per annum during the past decade, its sustainable use is threatened by the production of increasing amounts of the main by-product of the transesterification reaction, i.e., unrefined glycerol (10 wt.% of the oil undergoing the reaction). However, glycerol could also be used for the prod...
Article
Today biogas produced from anaerobic digestion is used mainly for thermic and electric energy production. Its use as raw material for syngas production and further upgrading to chemical products like methanol (MeOH), dimethyl ether (DME) or acetic acid could be an interesting option as process intensification. In this work the sustainability of a B...
Article
The methanation of CO2 via the Sabatier process is gaining interest for power-to-gas (P2G) application. In this work, CO2 methanation activity and stability were investigated over Ni/GDC (gadolinium-doped-ceria) catalysts at atmospheric pressure varying reaction temperature (TSET = 300–600 °C) and space velocity (GHSV = 10,000–50,000 h⁻¹). Powder c...
Article
A series of high specific surface area mesoporous supports (CeO2, CeO2-Al2O3, and Al2O3) were synthesized by the surfactant-assisted precipitation method using cetyltrimethylammonium bromide (CTAB) as template. Highly dispersed Rh-based catalysts were prepared by the wetness impregnation technique. The physico-chemical properties of the as-prepared...
Article
In this study, the syngas production by steam reforming (SR) and oxy-steam reforming (OSR) of clean biogas over cordierite monoliths (400 cpsi) lined with Ni, Rh, or Pt on CeO2 catalyst was deeply investigated. Structured catalysts were prepared by using an alternative method to traditional washcoating based on the combination of the solution combu...
Article
In this work Ru (1.5 wt%)/La (3 wt%)-modified-Al2O3 coated α-alumina monoliths of different geometries (100 cpsi square channel, 170 cpsi hexagonal channel, diameter 9 mm, length 30 mm) were prepared by in-situ catalyst washcoating technique with catalyst loadings in the range 100–250 mg. The powder and structured catalysts were characterized by va...
Article
A new approach for the direct conversion of syngas into methanol has been proposed as alternative to the conventional process requiring WGS and/or PSA clean-up steps for syngas upgrading. A comparative thermodynamic equilibrium analysis of biogas reforming processes (dry reforming, steam reforming and oxy-steam reforming) has been performed using t...
Article
The influence of reduction temperature (450–900 °C) on the catalytic activity of Ce0.70La0.20Ni0.10O2-δ sample during methane dry reforming reaction to synthesis gas has been studied. The activity of the sample, prepared by combustion synthesis, has been evaluated at 750 °C under increasing gas hourly space velocity (from 26400 to 105600 h⁻¹) for 5...
Article
Solution combustion synthesis (SCS) is a preparation technique that can be used to synthesize a variety of inorganic nanomaterials and structured catalysts. It is based on a self-propagating exothermic redox reaction between organic salts and a fuel mixed together in an aqueous solution, which results in the formation of nanocrystalline and highly...
Chapter
The distributed hydrogen production from different biomass-derived fuels (bioethanol, biobutanol, glycerol, and biomethane) by conventional steam reforming (SR) process was investigated. An overview of the main feedstocks and the current technologies employed for the biofuels generation, purification, and upgrading is provided. The SR process is an...
Article
In this paper, 0.6 wt.% Rh/CeO2 catalyst was synthesized by the Solution Combustion Synthesis (SCS) method, producing a low-cost noble metal-based system due to the simultaneous high dispersion and low metal phase content. The catalyst was characterized by the XRD, N2-physisorption, CO-chemisorption, TPR, TPO and TEM measurements. Deactivation by c...
Chapter
Biogas is one of the energy sources that are gaining more and more importance in Europe and, in particular, in Italy and Germany. Nowadays, it is used for the combined production of heat and power. Here we propose to use all of its major components (CO2 and CH4) to produce methanol. A feasibility study of this process is reported, where we optimize...
Article
Ni-CeO2 catalysts (metals load equal to 7.5 wt.%) as thin oxide layers on ceramic monoliths have been obtained by support dip-coating into acid-free stable catalyst dispersion. Ni-based catalysts were prepared by precipitation-dry-impregnation method or solution combustion synthesis and characterized by XRD, BET, CO-Chemisorption, TPR, TEM and SEM-...
Article
Liquid hydrocarbons conversion into hydrogen rich gas is a central process step in fuel processors for auxiliary power units (APUs) for naval applications. Diesel, together with gasoline, is the preferred fuel for these applications. The CNR-ITAE has developed an hydrogen generator based on steam reforming (SR) of n-dodecane (n-C12H26) as surrogate...
Article
Full-text available
The electrochemical behaviour of a Solid Oxide Fuel Cell (SOFC) fed with n-dodecane reformate is investigated. Experiments are carried out at 800 °C by using a cell consisting of a supporting Ni anode, a thin double layer yttria-stabilised zirconia/yttria-doped ceria electrolyte and a perovskite cathode. A catalytic steam reformer (SR) is used for...
Article
Sorbents for CO2 capture have been prepared by wet impregnation of a commercial active carbon (Ketjen-black, Akzo Nobel) with two CO2-philic compounds, polyethylenimine (PEI) and tetraethylenepentamine (TEPA), respectively. The effects of amine amount (from 10 to 70 wt.%), CO2 concentration in the feed, sorption temperature and gas hourly space vel...
Article
Full-text available
The electrochemical behaviour of a Solid Oxide Fuel Cell (SOFC) was investigated by feeding a reformate of n-dodecane. Experiments were carried out at 800 °C by using a commercial-type cell with a composition Ni-YSZ/YSZ/YDC/LSFC and a chemical processor operating under Steam Reforming (SR) conditions at 800 °C, S/C equal to 2.5, and GHSV equal to 1...
Article
Full-text available
The present work deals with the modelling, simulation and model validation of a biogas-fed tri-reformer followed by a solid oxide fuel cell (SOFC) for power generation, and a furnace for pre-heating of the stream entering the system. In order to predict results on a micro-scale plant, the PRO/II® software was used for the simulation of the tri-refo...
Article
Full-text available
Two synthetic mixtures simulating biogas (CH4 /CO2 = 66.2/33.8) and bioethanol (H2O/EtOH = 13/1) have been used for producing hydrogen by steam reforming reaction in a commercial dense self-supported Pd-Ag membrane reactor. The experimental campaign was subdivided into two parts. Firstly, we studied biogas steam reforming reaction, evaluating the r...
Conference Paper
Today there is a worldwide interest in the use of biofuel as an environmental friendly renewable energy source [1]. Biogas can be considered as one of the most widespread renewable fuel obtained from biomass produced from a variety of organic raw materials in various sectors ranging from zootechnical to agro-industrial [2-3]. Biogas, basically, it...
Article
A series of nanosized Ni/CeO2 catalysts were prepared by Solution Combustion Synthesis (SCS) varying the fuel (oxalyldihydrazide, urea, carbohydrazide and glycerol), the cerium precursor (cerium nitrate and cerium ammonium nitrate) and the nickel loading (ranging between 3.1 and 15.6wt%). The obtained powders were characterized by X-ray Diffraction...
Article
A model bioethanol steam reforming reaction is performed in a thin composite Pd membrane reactor by using Ni/CeO2 catalyst. A 7.5 wt.% Ni/CeO2 catalyst was prepared by Solution Combustion Synthesis using urea as fuel. The obtained powder was characterized by X-ray diffraction (XRD), N2-physisorption, CO-chemisorption and temperature programmed redu...
Article
This study focuses on the synthesis of nanocrystalline Ni/CeO2 catalysts for the biogas oxy-steam-reforming (OSR) process. The solution combustion synthesis (SCS) has been studied varying the fuel (oxalyldihydrazide, urea, carbohydrazide) and the cerium precursor (cerium nitrate and ammonium cerium nitrate). The physical-chemical characterizations...
Article
This paper covers the research activities performed at the CNR Institute for Advanced Energy Technologies "Nicola Giordano", aimed at developing and testing a biogas steam reforming reactor. A mathematical model has been developed in order to describe, the performance of the above-cited steam reforming reactor (packed bed). To study the effects on...
Conference Paper
Biogas, a renewable source of CH4 and CO2, is used for hydrogen generation by tri-reforming reaction; the reaction is a combination of CO2 reforming, steam reforming and partial oxidation of CH4 in a single catalytic step. Several Ni/La-Ce-O mixed oxides, prepared by combustion synthesis, were used as catalysts. The experimental tests, carried out...
Conference Paper
Full-text available
This paper covers the current activities at the CNR-ITAE aimed to developing a diesel steam reforming (SR) Hydrogen Generator based unit, dedicated to a Solid Oxide Fuel Cell (SOFC) in a power range until 1 kWe, to support auxiliary power units (APUs) for naval applications. The unit will is able to convert n-dodecane, as a diesel surrogate, with a...
Conference Paper
Biogas, a renewable source of CH4 and CO2, is used for hydrogen generation by tri-reforming reaction; the reaction is a combination of CO2 reforming, steam reforming and partial oxidation of CH4 in a single catalytic step. Several Ni/La-Ce-O mixed oxides, prepared by combustion synthesis, were used as catalysts. The experimental tests, carried out...
Article
The in situ deposition of 1.5 wt.% Ru/γ-Al2O3 catalytic layers on cordierite monoliths (400 cpsi, diameter 1 cm, length 1.5 cm), combining Solution Combustion Synthesis (SCS) with Wet Impregnation (WI), was addressed. First of all, the physicochemical properties of the catalyst at powder level were investigated by X-ray Diffraction (XRD), N2 adsorp...
Article
This study deals with an investigation of the performance of a biogas-fed Solid Oxide Fuel Cell (SOFC) operating in combination with an external tri-reforming system. The tri-reforming process is carried out using a ceria supported Ni catalyst (1.75 wt % Ni / CeO2), prepared by combustion synthesis. The catalytic tests were carried out at 800 degre...
Article
Methane steam reforming (SR) and oxidative steam reforming (OSR) are two catalytic processes for generating syngas. Catalysts based on Ru, Rh, and Pt noble metals deposited over CeO2 and Al2O3 carriers were prepared by solution combustion synthesis and tested towards the methane SR reaction. The best catalysts were further tested towards the methan...
Article
This study presents experimental study on a novel methane fuel processing system for hydrogen (H2) production. The unit includes into a single package the autothermal reformer, the CO shift converter, the preferential oxidation reactor and the internal heat exchangers. Effects of operative conditions, related to the H2 productivity, on the performa...
Article
The objective of the present work is the study of CH4 tri-reforming process (simultaneous carbon dioxide reforming, steam reforming and oxygen reforming) that can contribute to the CO2 abatement producing synthesis gas with the desiderate H2/CO ratio.A series of Ni–CeO2 catalysts with different La loadings is prepared by combustion synthesis and te...
Article
The performance of a Pt/CeO2 catalyst as packed bed, coated on monolith and as self-structured bed has been evaluated during C3H8 oxidative steam reforming. Structured bed, prepared by a new aqueous tape casting method, combining high total porosity (80%) with a self-supported channel structure, offers a better and more efficient control of heat an...
Article
Modeling studies have been conducted on Preferential Oxidation (PROX) Reaction, covering chemical kinetics and heat/mass transfer phenomena that occur in a shell and tube system, to be used in a beta 5 kWe hydrogen generator for Polymer Electrolyte Fuel Cells (PEFCs). The critical issue in the PROX reactor design is to achieve temperature control a...
Article
This paper covers the research activities performed at the CNR Institute for Advanced Energy Technologies “Nicola Giordano”, aimed at developing, assembling and testing a hydrogen generator HYGen II, to integrate with a polymer electrolyte fuel cell (PEFC) for stationary applications. The unit can convert light hydrocarbons (methane, propane, LPG,...
Article
Full-text available
This paper presents the experimental activities on a pre-commercial hydrogen generator unit HYGen II, for Polymer Electrolyte Fuel Cell (PEFC) in residential applications. The unit is able to convert light hydrocarbons (methane, propane, LPG, butane) with a nominal hydrogen production of 5 Nm3h-1 and a maximum hydrogen production of 8.5 Nm3h-1. Sta...
Article
This paper deals with a two-dimensional model of a preferential oxidation (PROX) reactor to be used in a beta 5 kWe hydrogen generator, named HYGen II, to integrate with polymer electrolyte fuel cells (PEFCs) for residential applications. The reactor geometrical configuration developed is a single-stage multi-tube configuration, in which a cocurren...
Article
This paper presents a two-dimensional model to describe the gas flow in an integrated reactor, developed at the CNR-ITAE Institute, and aimed to design a βeta 5 kWe hydrogen generator, named HYGen II, to integrate with polymer electrolyte fuel cells (PEFCs) for residential applications. The model is able to simulate velocity profiles in order to in...
Article
Full-text available
The catalytic activity of Ce1−x Ni x O2 samples (x=0.05; 0.10; 0.20) prepared by combustion synthesis have been evaluated in the Oxidative Steam Reforming of C3H8. The high activity and stability of Ce0.95Ni0.05O2 and Ce0.90Ni0.10O2 samples was ascribed to the co-existence of different Ni species: metallic, NiO highly dispersed and Ni2+ ions incorp...
Article
The paper describes the research activities carried out at the CNR Institute for Advanced Energy Technologies “Nicola Giordano”, aimed to develop, assemble and test a hydrogen generator, named HYGen I, to integrate with a PEFC (polymer electrolyte fuel cell) for residential applications. The unit, capable to convert light hydrocarbons (methane, pro...
Article
Catalytic autothermal reforming of hydrocarbons to hydrogen rich reformate represents an important step in fuel processor development for fuel cell systems. As a part of a larger research program aimed at developing and testing of such system based on autothermal reforming of light hydrocarbons, like liquefied petroleum gas (LPG), to be integrated...