Solid oxide cell technology development at TNO

Use Co- and Ni-free Air Electrode In Solid Oxide Cell Manufacturing For Electrolysis And Fuel Cell Applications

Solid Oxide Cell Technology Development at TNO

Novel components in Proton Exchange Membrane (PEM) Water Electrolyzers (PEMWE): Status, Challenges and Future Needs. A mini review

This mini-review presents an overall opinion of the technological challenges associated with each component of PEMWE at the cell level. State-of-the-art and a selection of novel advances in PEMWE technology are presented in order to put the performance and limitations of each component in the context followed by our perspective for strategies in...

Reversible deactivation of γ-alumina by steam in the gas-phase dehydration of methanol to dimethyl ether

Acidic γ-Al2O3 is an active catalyst for the dehydration of methanol to dimethyl ether (DME). However, the produced steam reduces the activity. In this work, the influence of the exposure of γ-Al2O3 to steam on the catalytic activity for methanol dehydration has been determined. At 250 °C and increasing stream partial pressure the conversion of...

Steam separation enhanced reactions: Review and outlook

Enhancement by steam separation is a promising process intensification for many types of reactions in which water is formed as a byproduct. For this, two main technologies are reactive vapor permeation (membrane technology) and reactive adsorption. Both can achieve significant conversion enhancement of equilibrium limited reactions by in situ...

Steam separation enhanced reactions: review and outlook

Enhancement by steam separation is a promising process intensification for many types of reactions in which water is formed as a byproduct. For this, two main technologies are reactive vapor permeation (membrane technology) and reactive adsorption. Both can achieve significant conversion enhancement of equilibrium limited reactions by in situ...

Evaluating lifetime of electrolyzers managing fluctuating supply of renewable energy

Grootschalige inzet van duurzame bronnen zoals wind en zon is alleen mogelijk als tijdelijke overschotten opgeslagen kunnen worden of omgezet in andere energiedragers. In Europese scenario’s wordt het omzetten van elektriciteit in waterstofgas via elektrolyse gezien als één van de meest kansrijke mogelijkheid om grote...

Leakage evolution and atomic-scale changes in Pd-based membranes induced by long-term hydrogen permeation

The long-term operation of a ceramic-supported 5 μm-thick Pd membrane at 450 °C and 27 bar with a feed representing steam-methane-reforming conditions has been monitored over a period of 100 days. Subsequently, a thorough characterisation of the exposed membrane has been performed to investigate leakage behavior and microstructural changes to...

Regeneration conditions as the key to sorption enhanced dimethyl ether synthesis

Highlights SEDMES: direct synthesis of DME from syngas by in situ H2O adsorption; Steam adsorbent easily regenerated by pressure swing, without temperature swing; Catalytic conversion and activity improve by temperature swing regeneration.

Separation Enhanced Dimethyl Ether Synthesis

A novel sorption enhanced dimethyl ether synthesis (SEDMES) process is presented using a solid adsorbent to remove produced water in situ. SEDMES experiments from feed mixtures of H2, CO, and CO2 have shown an increased yield of DME, an improved selectivity to DME over methanol, and a strongly reduced CO2 content in the product. Consequently,...

Hydrogen permeation through palladium membranes

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Long term testing of Pd-membranes under methane steam reforming conditions

Pd-membranes on their way towards application for CO2- capture

Pd-membranes in combination with water gas shift (WGS) reactors are considered as a cost and energy efficient technology for CO2 capture in natural gas or coal-fired power stations. An important step towards realization of a full-scale membrane reactor is the demonstration of a scaled-down version. This paper describes the realization of a...

Cr-poisoning of a LaNi0.6Fe0.4O3 cathode under current load

This study demonstrates the significant impact of Cr-poisoning on the performance of the LaNi0.6Fe0.4O3 (LNF) SOFC cathode under current load. Volatile Cr-species, originating from a porous metallic foam, enter the working electrode and modify both the LNF cathode layer and the Gd0.4Ce0.6O1.8 (GDC) barrier layer, causing increasing overpotential...

CACHET II WP1: Pd membrane engineering, development and PDU testing

CACHET II WP1, Pd membrane engineering, development and PDU testing

CACHET II WP1: Pd membrane engineering, development and PDU testing