Showing papers in "International Journal of Hydrogen Energy in 1982"

TL;DR: In this article, the authors used metal plating to increase the adhesive strength of perfluorosulfonic acid polymer membranes (Dupont manufactured Nafion) for solid polymer electrolyte (SPE).

TL;DR: In this paper, the authors present the results of ongoing parametric studies to determine the operating characteristics, performance, and capacity limitations of major components of a thermochemical water-splitting cycle.

TL;DR: In this article, the hydrogen reduction of pure α-Fe 2 O 3 doped with foreign metal oxides employing a sensitive micro-gravimetric technique was carried out by a consecutive two-step mechanism via Fe 3 O 4, the overall rate being controlled by the topochemical reduction of Fe 3 o 4 while that of doped oxides and hematite ore takes place by a different mechanism involving the mixed ferrite formed.

TL;DR: In this article, an electrocatalyst for hydrogen evolving cathodes has been developed for use in alkaline media, which exhibits a low overvoltage for hydrogen evolution (70-90 mV at 70°C and 1A cm −2 in 5 N KOH).

TL;DR: The possibility of establishing a hydrogen-fuelled compression ignition engine has been investigated experimentally using a conventional swirl chamber diesel engine as discussed by the authors, and the results indicated that ignition and engine operation are satisfactory without any ignition aid.

TL;DR: In this article, the influence of temperature, partial pressure of oxygen and quenching speed on the decomposition rate of magnetite (Fe3O4) is presented, and it is shown that at atmospheric pressure, high yields are obtained from the condensed vapours in the temperature range 900-1500°C.

TL;DR: In this article, a summary of catalyst studies for H 2 SO 4 vapor decomposition is presented, and the importance of pressure to sulfation temperature is presented. And the decomposition of H 2SO 4 is investigated.

TL;DR: In this article, the reaction rate at various hydride compositions was measured by the pressure change in a constant volume, and the absorption/desorption rate was expressed by dn/dt = k′(p - peq)/t, where p is the pressure at time t.

TL;DR: In this paper, the use of ammonia as a multipurpose energy vector was proposed for energy storage and transmission via pipeline to remote demand centers where some of it serves as a clean-burning fuel for local cogeneration and process heat applications, while others are used for direct agricultural application or as feedstock for production of nitrogen-based fertilizers or other chemical processes.

TL;DR: In this paper, a concept for scaling up the system for technical applications is presented based upon laboratory high temperature electrolysis experiments with single cells and serial connected electrolysis cells and a scheme for the integration of electrolysis tubes into modules and large scale electrolysis plants is presented.

TL;DR: In this paper, a conventional single cylinder, four-stroke diesel engine has been converted to work on the dual-fuel principle with hydrogen as the inducted fuel and the main objectives of the investigation were to determine the optimum proportions between hydrogen and diesel oil under various engine operating conditions and to study the combustion process in the engine under these conditions.

TL;DR: Photoproduction of H2 from some organic acids by agar entrapped cells of Rhodopseudomonas palustris has been investigated andobilized cells retain their H2-producing activity much longer than the free cells kept in identical conditions.

TL;DR: In this article, the structure of hydride phases based on intermetallic compounds related to CaCu 5, MgCu 2, MgZn 2 and PuNi 3 was investigated using powder X-ray and neutron diffraction.

TL;DR: In this paper, the Norsk Hydro water electrolysis technology and ammonia production based on this technology is described and a brief review of other technologies for ammonia production (steam reforming of natural gas, partial oxidation of heavy fuel, partial oxidization of coal), and makes an economic and energy demand comparison of the various technologies.

TL;DR: In this article, the effects of temperature, electrolyte concentration, and electrode material on the maximum value of the electrical current density were studied for both electrodes, and the effect of the concentration of electrolyte was essential.

TL;DR: In this paper, preliminary results obtained in a theoretical and experimental study of direct thermal decomposition of water for the production of hydrogen were presented, showing that the amount of evolved hydrogen increases with the stirring flow rate and with quenching efficiency.

TL;DR: In this paper, a small experimental cell was used to study factors affecting the cathodic fouling of nickel electrodes during the electrolysis of recirculated synthetic sea water, and the electrolyte concentration ranged from 1 2 to 3 times that of normal sea water.

TL;DR: In this paper, the conditions for the thermal decomposition of hydrogen sulfide are described and a pressure swing adaption on zeolite or carbon molecular sieves is proposed.

TL;DR: It is my long-held belief that hydrogen has a possibility of becoming a substitute for coal gas as well as other industrial gases and that it should replace coal gas in the future.

TL;DR: In this article, an elliptical reflector chamber was used to irradiate, in the near-UV region, a catalyst fluidized in a laboratory reactor, and the main result was the production of ammonia over all the catalysts used.

TL;DR: A program plan to develop liquid hydrogen (LH2) technology on an international basis has been proposed which can provide for timely introduction of LH 2 as a fuel for transport aircraft as discussed by the authors.

TL;DR: In this paper, the properties of separator materials suitable for use in industrial alkaline water electrolysers are surveyed, including both inorganic and organic materials, and the properties which make asbestos diaphragms unsuitable for use above 100°C are also reviewed.

TL;DR: In this paper, a central refueling station will deliver pure hydrogen derived out of the town gas network, and high and low temperature hydride tanks will be tested in some vans and passenger cars in Stuttgart.

TL;DR: The photoproduction of molecular hydrogen by agar-entrapped cells of Rhodopseudomonas palustris and Rhodospirillum molischianum from sugar refinery wastes and straw paper mill effluent as electron donors attains a partial reclamation of the effluents.

TL;DR: In this article, a nonstationary hot-wire method was applied to measure the thermal conductivity of Mg, Mg/10wt%Ni and Mg2Ni hydride powder beds in high temperature and pressure hydrogen atmospheres up to 200°C and 40 atm for three levels of bulk density for each sample.

TL;DR: In this article, the results of a study devoted to the ammonia photoproduction from nitrogen and water over catalysts made up of titanium and iron oxides supported on γ-alumina were reported.

TL;DR: In this article, four promising approaches were pursued to improve electrolysis technology: (a) electrochemical study of catalysts, (b) development of electrode fabrication processes, (c) optimization of cell configuration and (d) selection and investigation of separator materials.

TL;DR: In this paper, two types of reactions were investigated for the recovery of hydrogen from hydrogen sulfide: Type 1 H 2 S → H 2 + S 0, Type 2 H 2S + O 2 →H 2 + SO 2 Each type of reaction is constructed by a two-step cycle.

TL;DR: In this article, the performance of catalysts in different forms was investigated for the design of a catalytic combustor with hydrogen fuel, which consisted of a ceramic honeycomb impregnated with Pt, two Ni metal foams with Pd powder which differed from each other in pore size, and a ceramic foam coated with Co-Mn-Ag oxide powder.

TL;DR: In this article, the authors developed a hydrogen car system consisting of a LH2-tank-LH2-pump-injector to inject high pressure and low temperature hydrogen gas into a two-stroke engine that is capable of meeting all the above-mentioned requirements except (ii).