Camilla Galletti

Camilla Galletti
Politecnico di Torino | polito

About

40
Publications
5,337
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1,180
Citations
Citations since 2016
11 Research Items
590 Citations
2016201720182019202020212022020406080
2016201720182019202020212022020406080
2016201720182019202020212022020406080
2016201720182019202020212022020406080
Introduction
Skills and Expertise

Publications

Publications (40)
Article
Full-text available
In recent decades, several abatement techniques have been proposed for organic dyes and metal cations. In this scenario, adsorption is the most known and studied. Clinoptilolite was considered, since it is a zeolite with a relatively low cost (100–600 $ tons−1) compared to the most well-known adsorbent used in wastewater treatment. In this work, Cl...
Article
Full-text available
Many industries discharge wastewater from processing into surface and underground waterways, and then, these waste waters must therefore be treated in order to remove heavy metals. The most common treatment used is the activated carbon adsorption, a particularly competitive and effective process; however, the use of activated carbon is not suitable...
Article
Full-text available
Electrochemical CO2 reduction is a promising carbon capture and utilisation technology. Herein, a continuous flow gas diffusion electrode (GDE)-cell configuration has been studied to convert CO2 via electrochemical reduction under atmospheric conditions. To this purpose, Cu-based electrocatalysts immobilised on a porous and conductive GDE have been...
Article
Full-text available
The water fraction derived from the hydrothermal liquefaction of a lignin-rich feedstock was subjected to aqueous phase reforming to produce hydrogen. Deactivation of the catalyst was observed, and it was ascribed to fouling phenomena caused by phenolic oligomers. Simple aromatics like guaiacol and phenol, as well as inorganics, were proved not to...
Article
The catalytic conversion of CO2 to CH4 (Sabatier reaction) has been studied to develop an after-treatment process at vehicles exhausts. Three different formulations of Ru commercial catalysts, two in powder and one in pellets shape, were tested and characterized by means of X-ray powder diffraction, scanning electron microscopy (SEM-EDX), N2 adsorp...
Poster
One of the most persistent and abundant types of marine pollution is represented by microplastics, small plastic debris less than 5 mm in size. Plastics are cheap, lightweight, strong, durable and corrosion resistant. All these features together arose the investment in plastic manufacture, leading to massive production and application. Therefore, t...
Article
Rice husk, an agricultural waste, is abundantly available in many countries such as China, India, Brazil, US, and South East Asia. Despite the massive production of rice husk, it is mainly disposed to landfill. In this work, utilization of rice husk for a potential waste‐water treatment is evaluated, along with subsequent encapsulation of the adsor...
Article
Full-text available
The aim of this work is to study the activity of novel TiO2-based photocatalysts doped with either phosphorus or zirconium under a UV-Vis source. A set of mesoporous catalysts was prepared by the direct synthesis: TiO2_A and TiO2_B (titanium oxide synthesized by two different procedures), P-TiO2 and Zr-TiO2 (binary oxides with either nonmetal or me...
Article
The interesterification of rapeseed oil was performed in a batch reactor using for the first time low surface area massive tin(II) oxide as heterogeneous catalyst and methyl acetate as acyl acceptor. The effect of reaction temperature, methyl acetate to oil molar ratio and catalyst loading on the performances of the process were investigated. Yield...
Article
Full-text available
More and more attention has recently been paid to the electrochemical treatment of wastewater for the degradation of refractory organics, such as phenol and its derivatives. The electrodeposition of different types of manganese oxides (MnOx) over two substrates, namely metallic titanium and titania nanotubes (TiO2-NTs), is reported herein. X-Ray Di...
Article
Manganese oxides with different structures and morphologies have been investigated as catalysts for low temperature SCR by preparing a series of samples by both SCS (Solution Combustion Synthesis) and co-precipitation methods. The samples have been characterized by XRD, BET, H2-TPR, NH3-TPD, FESEM and their catalytic activity tested for NOx removal...
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
The present paper deals with the study concerning the CO removal from reforming H2-rich gas stream through WGS reaction over Rh-based catalysts supported on CeO2 carriers. CeO2 was prepared by two different methods: solution combustion synthesis (SCS) and hard template (HT); incipient wetness impregnation method was used to deposit the active metal...
Article
The selective CO methanation (CO-SMET) process via Ru–Al2O3 catalysts was investigated as a tool for complete CO removal in fuel processors, when the H2-rich gas so produced is employed for PEM-FCs applications to vehicles, boats, yachts and residential co-generators. CO-SMET seems, in fact, to be a good alternative to the most widely used CO prefe...
Article
Gold-supported catalysts on alumina and ceria were prepared by means of deposition-precipitation method at different pH and molarity of the precursor solution. The screening at the powder level in a fixed bed micro-reactor of the catalytic activity of the 3% Au prepared catalysts, in terms of CO conversion for the WGS reaction, highlighted that the...
Article
Even traces of CO in the hydrogen-rich gas fed to PEM-FCs can poison the platinum anode electro-catalyst and dramatically decrease the stack power. The CO selective methanation (CO-SMET) process seems to be a good alternative to the CO preferential oxidation (CO-PROX) one for PEM-FCs applications to vehicles, boats, yachts and residential co-genera...
Conference Paper
Thanks to their characteristics of high energy efficiency and low emissions, Polymer Electrolyte Fuel Cells (PEM-FCs) are the most promising candidates for electric power generator in transportation applications. At present, the most probable fuel is H2-rich gas coming from reformed or partially oxidized hydrocarbon fuels, which downstream the Wate...
Article
The present paper deals with the study on complete removal of CO in H2-rich gas stream through CO-SMET over Ru-based catalysts supported on γ-Al2O3 and CeO2 carriers. All the catalysts, loaded with 3% Ru, were prepared by a conventional impregnation method and their CO removal performance was determined at the powder level in a fixed bed micro reac...
Article
Solution Combustion Synthesis (SCS) is becoming one of the most important ways to produce a wide range of advanced porous ceramic or metallic materials. These include ceramic oxide like nanostructured catalysts. SCS is an attractive alternative for the production of smart materials of high value compared to the more conventional and expensive prepa...
Article
Selective CO methanation (CO-SMET) as a strategy for complete CO removal in fuel processing applications was investigated over Ru-based catalysts. The CO-SMET, in fact, seems to be a good alternative to the CO preferential oxidation (CO-PROX) for the applications on polymer electrolyte membrane fuel cells (PEM FCs) to transportation vehicles, boats...
Article
Full-text available
The effect of synthesis parameters on Au dispersion on ceria, used as a support, and the activity of the obtained catalysts toward the water-gas shift reaction was studied. Catalytic activity tests were carried out on 3% Au-CeO2 catalysts, prepared at different pH and Au precursor solution molarity M. The best catalytic activity in terms of CO abat...
Article
The last CO clean-up step based on the preferential oxidation (CO-PROX) can lead to a reduction of the CO concentration in the hydrogen-rich gas derived from hydrocarbons reforming down to at least 10 ppmv or below, so as to enable its direct feeding to standard PEM fuel cells. In this paper, a screening of powder Pt-based catalysts for CO preferen...
Article
Water gas shift (WGS) reaction can lead to a reduction of the CO content in the H2-rich gas derived from HCs reforming to about 0.5–1%. Au-based catalysts supported on CeO2 and CeO2-based mixed oxides were prepared, characterized and tested for a potential application in a medium temperature WGS stage. In particular, catalytic activity tests perfor...
Article
CO preferential oxidation (CO-PROX) can lead to a reduction of the CO content in the hydrogen-rich gas derived from hydrocarbon re-forming down to at least 10 ppmv or below, so as to enable its direct feed to standard polymer electrolyte membrane fuel cells (PEM FCs). Rh-based catalysts supported on A zeolites (3A, 4A, and 5A), alumina, titania, an...
Article
Selective CO methanation (CO-SMET) over Ru-based catalysts was investigated as a strategy for complete CO removal in fuel processing applications. The CO-SMET seems to be a good alternative to the CO preferential oxidation (CO-PROX) for the applications on PEM-FCs to transportation vehicles, boats, yachts and residential co-generators, as a CO-SMET...
Article
Even traces of CO in the hydrogen-rich gas fed to PEMFC can poison the platinum anode and dramatically decrease the cell power output.Micro-chemical technology (MCT) is a new direction of chemical engineering originated in the early 1990s. The application of MCT can greatly improve the efficiency of systems and diminish their volumes and weights. T...
Article
Microstructured reactors for water–gas shift and the preferential oxidation of carbon monoxide were developed for a fuel processing/fuel cell system running on iso-octane and designed for an electrical power output of 5 kWel. The target application was an automotive auxiliary power unit (APU). The work covered both catalyst and reactor development....
Article
CO preferential oxidation (CO-PROX) can lead to a reduction of the CO content in the hydrogen-rich gas derived from hydrocarbon reforming down to at least 10 ppmv or below, so as to enable its direct feeding to standard PEM fuel cells. Au-based catalysts supported on titania were prepared and tested as potential applications in CO-PROX operating ov...
Article
Even traces of CO in the hydrogen-rich gas fed to proton exchange membrane fuel cells (PEMFC) poison the platinum anode electrode and dramatically decrease the cell power output. In this work, several 1%Pt catalysts, all on 3A-type zeolite support, were prepared starting from different precursors and employing different methods: cation exchange (CE...
Article
The CO-PROX process can reduce CO concentration in hydrogen rich gases down to 10 ppmv, to avoid poisoning of PEM fuel cells electrocatalysts. Rh–based catalysts on mixed alumina + 3A zeolite support were prepared and tested in temperature range compatible with that of PEMFCs (80-100°C). In order to determine the catalyst highest oxygen selectivity...
Article
The CO preferential oxidation (CO-PROX) process can lead to a reduction of the CO concentration in the hydrogen-rich gas from WGS process of hydrocarbons reformate down to at least 10ppmv or below, so as to enable its direct feeding to standard PEM fuel cells. Rh-based catalysts supported on 3A zeolite, alumina, titania or ceria were prepared and t...
Article
Fuel Cell (FC) technology promises to be a viable alternative for small scale electric heat and power generation (combined heat and power units, CHP). Moreover, the polymer electrolyte membrane FC (PEM-FC) is currently considered the most suitable technology for vehicles, both for traction and as auxiliary power unit APU; the latter is used on boat...
Article
Theoretically, there are several methods that can be used to remove CO from H 2-rich gases. As for the applications of PEM-FCs to vehicles, boats and yachts and residential co-generators, however, the feasible choice may be only between the preferential CO oxidation (CO-PROX) and the selective CO methanation (CO-SMET) because of the limited availab...
Article
Theoretically, there are several methods that can be used to remove CO from H2-rich gases. As for the applications of PEM-FCs to vehicles, boats and yachts and residential co-generators, however, the feasible choice may be only between the preferential CO oxidation (CO-PROX) and the selective CO methanation (COSMET) because of the limited available...
Article
Fuel Cell (FC) technology promises to be a viable alternative for small scale electric heat and power generation (combined heat and power units, CHP). Moreover, the polymer electrolyte membrane FC (PEM-FC) is currently considered the most suitable technology for vehicles, both for traction and as auxiliary power unit APU; the latter is used on boat...
Article
Ru-based catalysts supported on A zeolites and alumina were synthesised, characterised (XRD, SEM-EDS, TPR) and tested under realistic conditions for the preferential oxidation of CO (CO-PROX) from the hydrogen-rich gas streams produced by fossil fuels reforming. Comparative tests with a commercial catalyst were also carried out with special attenti...
Article
Even traces of CO in the hydrogen-rich feed gas to proton exchange membrane fuel cells (PEMFC) poison the platinum anode electrode and dramatically decrease the power output. In this work, a variety of catalytic materials consisting of noble metals supported on A zeolites were synthesised, characterised and tested under realistic conditions in the...
Article
Several pure zinc oxide materials, prepared with different methods (combustion synthesis and a modified version of the citrates method) and calcined at different temperatures, were investigated as low-temperature desulfurizing sorbents from gaseous streams (syngas, in particular). Comparative tests with a commercial sorbent were also carried out. T...

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