The paper reviews the history and present understanding of protons in oxides; their defect chemistry, thermodynamics, transport. Focus is put on correlations between hydration thermodynamics other materials properties which may help to predict proton uptake conduction oxides. Also effects association particular problem high grain boundary resistance temperature conductors are addressed. In second part, a number experimental observations attributed presence hydride ions under mildly reducing...

Chemical-looping with oxygen uncoupling (CLOU) is a novel method to burn fuels in gas-phase without the need for an energy-intensive air separation unit. The carbon dioxide from combustion obtained separated nitrogen air. technique based on chemical-looping (CLC) but does not involve any direct reaction between fuel and carrier. Instead, CLOU process uses three steps two reactors, one reactor where metal oxide captures (step 1), releases 2) this reacts 3). This means that burns directly...

With the increased pressure to decarbonise power generation sector several gas turbine manufacturers are working towards increasing hydrogen-firing capabilities of their engines 100%. In this review, we discuss potential materials challenges turbines fuelled with hydrogen, provide an updated overview most promising alloys and coatings for application, highlight topics requiring further research development. Particular focus is given high-temperature oxidation exposed hydrogen steam at...

The degradation of the interface between Plansee Ducrolloy alloy (Cr‐5 wt % Fe‐1 ) (PD) and (LSM) ceramic was studied by means electrical resistance measurements at 900°C in air humidified with 2% a dc load scanning electron microscopy/energy‐dispersive spectroscopy cross sections samples. One sample PD plasma‐sprayed contacting layer exhibited little degradation, estimated to be after 10,000 h. Other samples were coated different spinel‐forming slurries pretreated mixtures 950 1000°C....

The world's largest Chemical Looping Combustion (CLC) demonstration unit is being built close to the city of Chengdu in China. design and construction unit, as well coming testing, done within CHEERS project, which a collaborative project between Europe funding (∼25M€) comes from several partners, addition EU's Horizon2020 China's Ministry Science Technology (MOST). TotalEnergies has been responsible for Front-End Engineering Design (FEED) study. investment decision December 2021 marks...

Perovskite type materials which can change oxygen content quickly under changing partial pressures are believed to be suitable for chemical looping of natural gas. In order investigate the oxidation/reduction these in-situ powder X-ray diffraction was used study La1−xSrxCo1−yFeyO3−δ system. It found that samples with high iron a hexagonal/orthorhombic cubic phase transition observed upon heating in reductive atmosphere and cationic lattice is maintained reduction. On other hand, cobalt were...

In coal-based chemical looping combustion (CLC) technology, relatively cheap metal oxides, referred to as oxygen carrier materials (OCMs), are required because some of the OCMs will be removed together with residual ashes after combustion. CLC technology have an estimated loss in efficiency around 2% compared standard without capture if a proper OCM is found that can give full combustion, removing need air separation unit (ASU). Materials uncoupling (CLOU) effect even further benefits faster...

A numeric scale of acidity and basicity, developed by D.W. Smith, allows for quantitative comparison between different oxides has been useful in explaining various oxide behaviors. In this study, we aim to predict on the Smith using a machine learning approach. Previous attempts linear fit based electronegativity showed clear trend but lacked precision due simplicity model multi-valent nature metal oxides. We propose multi-parameter incorporating four features: electronegativity, valence...

Abstract High temperature proton conducting solid oxide fuel cells (PC‐SOFCs) are in a developing state. Electrolytes these should exhibit conductivity with essentially no electronic and little other ionic conductivity, as well long‐term stability acidic atmospheres. Acceptor substituted rare‐earth ortho‐niobates ortho‐tantalates were recently demonstrated to wet atmospheres, maximum of ∼10 –3 S cm –1 for 1% Ca‐doped LaNbO 4 . This modest requires that the electrolyte thickness is micron...

The paper describes the development of a novel reactor concept for natural gas fueled chemical looping combustion (CLC). is best described as rotating bed in which doughnut shaped fixed containing an oxygen carrier material rotated between different sectors where air and methane are fed. gases fed radially outwards through bed. Between inert to avoid uncontrolled mixing methane. rationale choice discussed CuO/Al2O3 based has been selected initial evaluation. A major challenge with proposed...

The Nordic countries constitute a natural location for the development and deployment of Bio-Energy with Carbon Capture Storage (BECCS). Finland, Sweden Denmark are world-leading respect to heat power generation from sustainable biomass. Norway is (CCS). also have ambitious targets reductions their CO2 emissions, host leading technology providers, large biomass potential per capita. System studies suggest that bioenergy could be single largest energy carrier in by 2050. Negative Emissions...

Energy penalty is the primary economic challenge facing CO2 capture technology. This work aims to address this through a novel power plant configuration, capable of achieving 45.4% electric efficiency from coal with 95% efficiency. The COMPOSITE concept integrates chemical looping oxygen production (CLOP) and packed bed combustion (PBCLC) reactors into an integrated gasification combined cycle (IGCC) plant. Hot gas clean-up technology implemented boost When commercially available cold used,...

Ammonia (NH3) and methane (CH4) emission measurements that reflect local production conditions are required to track progress in national policies verify factors. The findings can also be used better understand key factors influencing emissions. This is especially important Norway, which has long cold winters, small cattle herds mechanically ventilated buildings. However, until now, NH3 CH4 emissions from Norwegian buildings have not been reported literature. Moreover, other climates, often...

Power generation using chemical looping combustion (CLC) technology has emerged as a promising CO2-capture-based alternative to conventional technology. In this study, the performance of Ca0.9Mn0.5Ti0.5O3−δ perovskite-type oxygen carrier material for use in fixed-bed CLC reactors is investigated. The main focus study on material's oxygen-carrying capacity and reactivity with conversion syngas reactor. Pressurized thermogravimetric analysis model gases indicates neither Boudouard coking nor...

Palladium (Pd) membranes are a promising enabling technology for power generation and hydrogen production with CO2 capture. SINTEF has developed patented flexible to produce Pd-alloy that significantly improves flux thereby reduces material costs. Reinertsen AS aim demonstrate the Pd membrane H2 separation on side stream of Statoil Methanol Plant at Tjeldbergodden, Norway. In present article, we upscaling manufacturing process, together module skid design construction.

Abstract In this study, the redox behavior and effect of presence sulfur on performance CaTi x Mn 0.9− Mg 0.1 O 3 perovskite‐type system were investigated. A detailed thermodynamic thermogravimetric approach combined with post‐characterization was utilized. Ti doping positively influenced reduction reaction rate broadened operation window oxygen carrier material (OCM) to lower temperatures. Although accumulation during chemical looping uncoupling conditions thermodynamically inevitable owing...