Abstract Hydrogen (H2) fuel for gas turbines is a promising approach long duration storage and dispatchable utilization of intermittent renewable power. A major global discussion point, however, the potential air quality impact hydrogen combustion associated with nitrogen oxide (NOX) emissions. Indeed, several studies in literature have reported elevated NOX concentrations terms dry ppmv at 15%...

There is considerable interest in developing fuel-flexible, low emissions turbines for power generation. One approach is based on burning a variety of lean premixed fuels with relatively low flame temperatures. Such flames can be stabilized in a low swirl burner configuration, for example, using a variety of fuels such as pure hydrogen and hydrogen-seeded hydrocarbon mixtures. However, many hyd...

Fuel cells are receiving widespread attention as an alternate source for clean energy, and one of the most important developments are proton-exchange membrane fuel cells (PEMFC) which operate using hydrogen at low temperatures. In the U.S., there is a considerable effort underway to develop H2 as the preferred fuel due to the potential for decreasing our dependence on imported oil, and the envi...

In this contribution we report on the electrocatalytic reduction of CO2 for the production of liquid fuels by using two different approaches under i) liquid and ii) gas phase conditions. The main aim of the work is the comparison of these two experimental setups, in terms of productivity, kinds of liquid compounds produced and efficiencies, due to the differences in the mechanism which underlay...

hydrocarbons are prone to bacterial and fungal contamination. bacteria and fungi live and proliferate in water droplets within the fuels and on surfaces surrounding them. this can cause corrosion in oil exploration and production, clogging of fuel lines in aviation and higher emissions in diesel combustion engines to state few examples. state-of-the-art is the addition of biocides to fuels, whi...

Nature's photosynthesis uses the sun's energy with chlorophyll in plants as a catalyst to recycle carbon dioxide and water into new plant life. Only given sufficient geological time can new fossil fuels be formed naturally. In contrast, chemical recycling of carbon dioxide from natural and industrial sources as well as varied human activities or even from the air itself to methanol or dimethyl ...

In recent years, concerns over the impact of internal combustion engine hydrocarbon emissions on the environment have prompted tighter regulation on allowable emission levels. While much work has been done on reducing hydrocarbon emissions after they have entered the exhaust stream, less direct monitoring of the emission sources has been performed. An optically accessible four-stroke internal c...