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de Falco M.,Biomedical University of Rome | Giansante S.,Biomedical University of Rome | Iaquaniello G.,KT Kinetics Technology | Barbato L.,Processi Innovativi s.r.l
Green Energy and Technology | Year: 2013

An innovative process scheme to produce methanol from carbon dioxide is here presented and assessed via simulation. In this configuration, the syngas stream, composed by CO, CO2, and H2 and fed to the methanol synthesis reactor, is produced by means of a reverse-water-gas-shift by which a CO2 stream is partially converted in carbon monoxide. In the chapter, the best catalyst to support the reverse reaction is selected; then a simulation model is applied to define the proper operating conditions to achieve syngas composition targets. The simulation results show that the plant configuration represents a feasible way to produce methanol using carbon dioxide, competitively with the traditional process in which the syngas is produced by a natural gas steam reforming unit. © Springer-Verlag London 2013.


Centi G.,Messina University | de Falco M.,Biomedical University of Rome | Iaquaniello G.,KT Kinetics Technology | Perathoner S.,Messina University
Green Energy and Technology | Year: 2013

The utilization of CO2 as a feedstock for producing chemicals is an interesting challenge to explore new concepts and new opportunities for catalysis and industrial chemistry. It is an excellent possibility to inject renewable energy in the energy and chemical production chains, but a major current hurdle for a largescale use is the need to further improve production routes for renewable H2 by improving electrocatalysts and device technology in current electrolyzers. However, when cheap electrical energy from renewable sources is available, the use of CO2 could be already economic. In the organic synthesis and polymer chemistry, new routes for activating CO2 and producing valuable chemicals and/or materials are being developed. Electrocatalysis is also offering new possibilities, either to produce small organic molecules (fuels) to be used in conjunction or integrated with solar devices (for artificial leaf type systems), or as a valuable synthetic procedure. The main relevant aspects of these routes are summarized to present the status and outlooks, as well as the strategies, for carbon dioxide (re)use. © Springer-Verlag London 2013.


Palma V.,University of Salerno | Vaiano V.,University of Salerno | Barba D.,University of Salerno | Colozzi M.,KT Kinetics Technology | And 3 more authors.
International Journal of Hydrogen Energy | Year: 2015

Hydrogen production by thermal decomposition of H2S in the presence of oxygen has been investigated at different operating conditions. It was studied the influence of the main operating parameters like temperature, O2/H2S ratio and residence time on H2S conversion, H2 yield and SO2 selectivity. Experimental results allowed to identify the best values of operating parameters able to assure a high H2S conversion and a good hydrogen yield, minimizing the SO2 selectivity. A kinetic model was developed through the identification of the main reactions that occur in the system. The accuracy of the model was tested under different experimental conditions to evidence the predictive capability of the model. A very good agreement between the mathematical model calculations and the experimental data by varying the feeding molar ratio (O2/H2S) was achieved. © 2014 Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.


Barbato L.,Processi Innovativi srl | Iaquaniello G.,Processi Innovativi srl | Mangiapane A.,KT Kinetics Technology
Green Energy and Technology | Year: 2013

The basics of the process architecture to produce methanol from CO2 using renewable hydrogen are discussed and integrated within a process scheme to analyse the effects of variables such as capital investment (CI), variable operating and CO2 at site costs, electric power need for Nm3 of produced H2. These estimations are used to provide a comparison of the overall production cost with conventional hydrocarbon-based technology. © Springer-Verlag London 2013.


Centi G.,Messina University | Iaquaniello G.,KT Kinetics Technology | Mangiapane A.,KT Kinetics Technology | Perathoner S.,Messina University
Energy Technology | Year: 2014

The utilization of carbon dioxide (CO2) to produce methanol (to be used as energy vector and raw material for chemical production) in remote areas, where cheap renewable H2 could be produced from renewable sources, is a technology with a potential impact estimated to be more than 7Gt CO2 equivalents. By using a techno-economic analysis, it is possible to evidence that methanol can be produced at competitive costs with respect to deriving energy from fossil fuels. This result, together with an analysis of the potential unexploited sources of renewable energy that are too far from users and grids, shows that the impact on the mitigation of climate change by this route is large, up to potentially 7Gt CO2 equivalents, and at least comparable with that of carbon capture and storage (CCS). There are also advantages in terms of i)lower costs, ii)reduced impact on the environment, and iii)enhanced energy security. Further benefits are in terms of effective integration with the actual energy and chemical production value chains. The technology may be also used to store energy to solve the issue of generation intermittency present in most of the renewable energy sources. These aspects make this CO2 conversion path using renewable energy a potentially valuable approach to mitigate climate change and increase the use of renewable energy. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Centi G.,Messina University | Perathoner S.,Messina University | Iaquaniello G.,KT Kinetics Technology
Green Energy and Technology | Year: 2013

A competitive and sustainable chemical industry requires developing new strategies for resource and energy efficiency. We present here the concept that the use of CO2 offers innovative possibilities to achieve this objective. The routes, opportunities, and barriers in converting CO2 using renewable energy and their impact on the chemical and energy value chains are discussed after introducing the general aspects of this topic evidencing the tight integration between the CO2 use and renewable energy insertion in the value chain of process industry. The specific challenge of using CO2 for the production of light olefins (ethylene, propylene), as specific example of value of carbon dioxide as carbon source to meet both resource and energy efficiency, is discussed. The conversion of CO2 back to fuels using sunlight (solar fuels) is also discussed to evidence how is a relevant opportunity to develop effective energy vectors for the storage of solar energy which integrates into existing energy infrastructure and allow a smooth, but fast transition to amore sustainable energy in future. © Springer-Verlag London 2013.

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