Samsung Engineering Co., Ltd.

Samsung Corning Co., Ltd.

Neoenbiz

Tae Hee Park

Myong Hoon Lim

Jae Hoi Gu

Yongho Yu

Byung C Lim

Jung Suk Lee

Kyu Il Lee

Yong Ho Yu

Kyu Tae Lee

Yoo S Hong

Jae-Hun Rho

Ki Y Lee

The present invention relates to a nano-diamond dispersion solution and a method of preparing the same. The method of preparing a nano-diamond dispersion solution comprises the following steps: providing a nano-diamond aggregation; mixing the nano-diamond aggregation with a metal hydroxide solution and stirring the mixture such that the nano-diamond aggregation is separated, to obtain a mixture solution; stabilizing the mixture solution such that the mixture solution is separated into a supernatant and precipitates; and extracting the supernatant and precipitates.

Nano-diamond dispersion solution and method for preparing same

Provided are a thermal siphon reactor and a hydrogen generator including the same. The hydrogen generator including the thermal siphon reactor includes: a housing; a reaction source container disposed in the housing; a reactor tube connected to the reaction source container in which a catalytic reaction of a reaction source provided from the reaction source container occurs; a catalyst layer which is porous, facilitates gas generation by being contacted with the reaction source, and is disposed in the reactor tube; and a product container which is connected to the reactor tube and collects a reaction product generated in the reactor tube, wherein in the reactor tube, a convection channel through which the reaction product is discharged passes through the reactor tube in the lengthwise direction of the reactor tube. The thermal siphon reactor and the hydrogen generator including the same have a self-operating ability, operate at low costs, and have small installment volume.

Thermal siphon reactor and hydrogen generator having the same

Provided is a method of preparing hydrogen using an amino acid. The method of preparing hydrogen using an amino acid includes: (a) mixing a metal borohydride and a zwitterionic material; (b) adding a solvent thereto to dissolve the mixture; and (c) generating hydrogen from the solution. The provided method of preparing hydrogen using an amino acid can reduce manufacturing costs, reduce a heating value of hydrogen during hydrolysis, increase a hydrogen generation rate, and allow a hydrogen generating apparatus to be small in size.

Method of producing hydrogen using amino acids

The present invention provides metal oxide catalysts and preparation method thereof, and its application for hydrogen generation from a metal borohydride solution. More particularly, provided are an activation method of a newly prepared catalyst and a regeneration method of a deactivated metal oxide catalyst.

Metal oxide catalysts

The present invention provides unsupported and supported cobalt oxide catalysts and preparation method thereof, and its application for hydrogen generation from a metal borohydride solution. More particularly, provided are an activation method of a newly prepared catalyst and a regeneration method of a deactivated cobalt oxide catalyst.

Cobalt oxide catalysts

The present invention relates to a novel sealing glass composition, in particular, one which comprises solid PbO--ZnO--B.sub.2 O.sub.3 glass and natural garnet as a filler component. This composition has the advantage that thermal strain does not occur at the interface between the crystalline glass and filler because of the excellent chemical affinity. This prevents cracks from propagating at the interface between the main glass and filler, thereby improving the mechanical strength of the glass.

Sealing glass composition and method of making and of using

The present invention relates to low temperature sealing glass compositions using ceramic composite filler useful for sealing alumina ceramic package, in particular, to compositions for hermetic-sealing cap and base of alumina package which consists of a solid PbO-B.sub.2 O.sub.3 glass powder and a filler selected from zinc zirconium silicate composite or magnesium aluminum zirconium silicate composite as a low thermal expansion ceramic composite. The used composite filler composes of zircon and willemite crystal phase or zircon and cordierite crystal phase uniformly mixed on the filler and has the low thermal expansion coefficient of 20.degree..about.40.degree..times.10.sup.-7 /.degree.C.

Growing community of inventors

Seoul, South Korea

Tae Hee Park