Showing papers by "Baldur Eliasson published in 1997"
TL;DR: In this article, the traditional application for large-scale ozone generation is discussed together with novel applications in excimer UV lamps, high power CO 2 lasers and plasma display panels, as well as additional applications for surface treatment and pollution control.
Abstract: Dielectric-barrier discharges (silent discharges) are non-equilibrium discharges that can be conveniently operated over a wide temperature and pressure range. At about atmospheric pressure electrical breakdown occurs in many independent thin current filaments. These short-lived microdischarges have properties of transient high pressure glow discharges with electron energies ideally suited for exciting or dissociating background gas atoms and molecules. The traditional application for large-scale ozone generation is discussed together with novel applications in excimer UV lamps, high power CO 2 lasers and plasma display panels. Additional applications for surface treatment and pollution control are rapidly emerging technologies. Recent results on greenhouse gas recycling and utilisation in dielectric-barrier discharges are also discussed.
486 citations
TL;DR: In this paper, the authors reported on carbon dioxide and methane recycling with other chemicals, especially with hydrogen and oxygen, to produce liquid fuels such as methanol and showed that the equilibrium yields per pass over the catalysts are already reached at temperatures above 250 °C.
20 citations
Patent•
11 Feb 1997TL;DR: In this paper, the first reaction chamber is replaced by two reaction chambers parallel to each other, with a relief valve connecting the reaction chambers and the first and second reaction chambers connected downstream.
Abstract: To produce combustibles or fuels from an undesirable greenhouse gas, said gas along with a catalytic gas, preferably consisting of nitrogen or nitrous oxide, and a hydrogen-containing gas or vapour is subjected to a silent electrical discharge in a first reactor (4). The result of this operation is excited or ionised atoms and/or molecules, which are converted in a catalytic reactor (8) with a copper-containing first catalytist (8') to H2 and, optionally, CO. A liquid (13) consisting of a combustible or fuel separates via a relief valve (9) into a liquid container (11). Gases escaping from the liquid container (11) are conveyed through a thermal reactor (14) provided with a second catalytist (15) and released via a relief valve (16). CH3OH for example as the desired fluid fuel (13') separates off in a fluid container (11') connected downstream. The first reactor (4) and the thermal reactor (14) can be combined in one container with a plurality of reaction chambers parallel to each other.
15 citations
Patent•
27 Dec 1997TL;DR: In this paper, the percentage fraction of CO2 in the feed gas is adjusted according to a predetermined function (f) for a predetermined volume ratio in the synthesis gas and does not vary by more than \! 20%.
Abstract: In the production of synthesis gas containing a hydrogen-carbon monoxide gas mixture by passing a methane-carbon dioxide gas mixture through a low-current discharge reactor, the percentage of in the feed gas is adjusted according to a predetermined function (f) for a predetermined volume ratio in the synthesis gas and does not vary by more than \! 20%. In the production of synthesis gas containing a hydrogen-carbon monoxide gas mixture by passing a methane-carbon dioxide gas mixture through a discharge reactor with a low-current gas discharge operated by an alternating voltage source through a dielectric, the percentage fraction V of CO2 in the feed gas is adjusted according to a predetermined function (f) for a predetermined volume ratio R = H2/CO in the synthesis gas and does not vary by more than \! 20%. The percentage fraction is given by V = (CO2/(CO2 + CH4)) \* 100.
8 citations