Agency of Industrial Science and Technology

Director-general of Agency of Industrial Science and Technology

Wakichi Kondo

Toshiya Kumagai

Susumu Mizuta

Kinjiro Fujii

Takaaki Manabe

Shigemitsu Shin

Iwao Yamaguchi

Hiroshi Yokota

Kenji Kawaguchi

Tsuyoshi Terayama

Tadao Shimizu

A process for forming a dense, epitaxial metal oxide film on a single crystal substrate, including cleaning the surface of the single crystal substrate, contacting the cleaned surface with a polar organic compound such as a small molecular weight alcohol, so that the cleaned surface adsorbs the polar organic compound, then applying a hydrocarbon solvent solution containing at least one organic group-containing metal compound on the polar organic compound-adsorbed surface, and then heating the substrate to decompose the organic group-containing metal compound and to form a dense epitaxial metal oxide film on the substrate.

Method for preparing dense, epitaxial metal oxide film

A superconductive material including a substrate and a superconductive layer of a double oxide of metals provided on the substrate is produced by a method which comprises the steps of:

Superconductive material and method of preparing same

A closed system for obtaining hydrogen from water is provided by combining a first step of obtaining hydrogen by reacting water and ferrous halide, a second step of converting triiron tetraoxide produced as a by-product in the first step to ferrous sulfate, a third step of obtaining oxygen and by-products by thermally decomposing said ferrous sulfate, and a fourth step of returning said by-products by thermally decomposing said ferrous sulfate, and a fourth step of returning said by-products obtained in the third step to any of the previous steps.

Thermochemical method for producing hydrogen from water

Calcium hydroxide and iodine are reacted with each other in the presence of water to produce calcium iodate and calcium iodide, the former of which precipitates from the reaction solution and is obtained by filtration and the latter of which is thereafter separated from the filtrate by evaporation separation. The calcium iodate is heated until it is converted into calcium oxide, whereafter there ensues generation of a mixed gas of iodine and oxygen. The mixed gas is cooled causing the iodine component thereof to solidify and pure oxygen gas is consequently liberated to be obtained as one product. The calcium iodide is solidified and subsequently heated under a current of steam to cause it to undergo conversion into calcium oxide with liberation of hydrogen iodide gas. The hydrogen iodide gas thus liberated is then separated by a known method into iodine and hydrogen which is obtained as another product. The calcium oxide and iodine remaining after separation of oxygen and hydrogen are recycled to serve again as starting reactants.

Thermochemical process for manufacture of hydrogen and oxygen from water

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Tsuchiura, Japan

Wakichi Kondo