Catalytic supercritical water gasification: Interaction of sulfur with ZnO and the ruthenium catalyst

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Publications associées (31)

Biporous Metal-Organic Framework with Tunable CO2/CH4 Separation Performance Facilitated by Intrinsic Flexibility

Seyedmohamad Moosavi, Berend Smit, Kyriakos Stylianou, Daniele Ongari, Peter George Boyd, Andrzej Gladysiak, Arunraj Chidambaram, Kathryn Suzanne Deeg, Kaili Yee Ordiz

In this work, we report the synthesis of SION-8, a novel metal-organic framework (MOF) based on Ca(II) and a tetracarboxylate ligand TBAPy(4-) endowed with two chemically distinct types of pores characterized by their hydrophobic and hydrophilic properties ...

2018

Catalytic Supercritical Water Gasification: Continuous Methanization of Chlorella vulgaris

Christian Ludwig, Gaël Peng, Frédéric Vogel, Dominik Refardt

Continuous catalytic supercritical water gasification (CSCWG; 400 degrees C, 28 MPa) of microalgal biomass (Chlorella vulgaris) was carried out at the microalgae production site of ZHAW in Wadenswil (Switzerland) nonstop over a period of 100 h. Microalgae ...

American Chemical Society2017

The impact of sorbent geometry on the sulphur adsorption under supercritical water conditions: a numerical study

Andrea Testino, Christian Ludwig

A numerical model to show the impact of the adsorption bed geometry on the desulfurization process of wet biomass under supercritical water (SCW) gasification process has been developed. Three different geometries, straight channels (pipe), sharp-edged cha ...

Springer Heidelberg2017

Photocatalytic and Electrocatalytic Reduction of Carbon Dioxide in Pressurized Systems

Patrick Voyame

The depletion of carbon-based fossil fuels and the rise in atmospheric carbon dioxide concentration will force an inevitable change in the future global energy landscape. CO2 reduction presents the advantages of decreasing its atmospheric concentration and ...

EPFL2016

Computer modelling of the surface tension of the gas-liquid and liquid-liquid interface

Dominic John Tildesley

This review presents the state of the art in molecular simulations of interfacial systems and of the calculation of the surface tension from the underlying intermolecular potential. We provide a short account of different methodological factors (size-effec ...

Royal Society of Chemistry2016

Methane Production from Microalgae via Continuous Catalytic Supercritical Water Gasification: Development of Catalysts and Sulfur Removal Techniques

Gaël Peng

This doctoral thesis aims at demonstrating the technical feasibility of methane production from microalgae via continuous catalytic supercritical water gasification (CSCWG). This work focuses on three different research approaches: (i) assessment and impro ...

EPFL2015

Effect of carbon surface functional groups on the synthesis of Ru/C catalysts for supercritical water gasification

Christian Ludwig, Gaël Peng, Frédéric Vogel

A carbon support was treated with HNO3 to create surface functional groups (e.g. -COOH, -OH), which were then characterized by TGA, TPD, CNS elemental analysis, and Boehm titration. HNO3 modified the carbon surface properties by adding a high amount of car ...

Royal Soc Chemistry2015

Adsorption of Small Hydrocarbons on the Three-Fold PdGa Surfaces: The Road to Selective Hydrogenation

Harald Brune, Jan Prinz, Roland Widmer, Daniele Passerone

Intermetallic compounds are a promising class of materials as stable and selective heterogeneous catalysts. Here, the (111) and (-1-1-1) single crystal surfaces of the PdGa intermetallic compound were studied as model catalysts with regard to the selective ...

American Chemical Society2014

Continuous catalytic hydrothermal gasification of algal biomass and case study on toxicity of aluminum as a step toward effluents recycling

Martin Brandenberger, Christian Ludwig, Mariluz Bagnoud, Frédéric Vogel

A novel process named SunCHem has been proposed to produce methane via catalytic hydrothermal gasification of microalgae [1-3]. The process is innovative because it is designed as a closed-cycle system with respect to water, nutrients and some of the CO2, ...

Elsevier2014

Synthesis factors affecting the catalytic performance and stability of Ru/C catalysts for supercritical water gasification

Christian Ludwig, Gaël Peng, Frédéric Vogel

Catalytic supercritical water gasification of isopropanol (450 degrees C, 30 MPa) over Ru/C catalysts was carried out in a fixed-bed plug flow reactor. In the absence of Ru, isopropanol decomposed to solid carbon (coke), and H-2 over the carbon support. Th ...

Royal Society of Chemistry2014

An examination of catalyst deactivation in p-chloronitrobenzene hydrogenation over supported gold

Lioubov Kiwi, Fernando Cardenas Lizana, Daniel André Samuel Lamey, Xiaodong Wang

The stability of Au/Al2O3 in the continuous gas phase (423 K) hydrogenation of p-chloronitrobenzene (p-CNB) to p-chloroaniline (p-CAN) has been investigated over an inlet H-2/p-CNB = 4-390, i.e. from close to stoichiometry to H2 far in excess. The catalyst ...

Elsevier2014

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