Korea Research Institute of Chemical Technology

Cqv Co., Ltd.

Samsung Total Petrochemicals Co., Ltd.

Zeobuilder Co., Ltd.

Nf Co.,ltd

Jeong Kwon Suh

Jung Min Lee

Beom Sik Kim

Byung Ki Park

Tae Sun Chang

Soon Yong Jeong

Yun Ho Jeong

Kwang Su Lim

Kwang Choong Kang

Sung Yun Jo

Ji Hoon Park

Iljeong Heo

Young Woo You

Gil Wan Chang

Dong Uk Choe

Ji Sook Hong

Chun Hee Park

Jeong Hwan Park

Ji Hye Lee

Won Young Kim

Hak Jun Kim

Jin Suk Lee

Soo Min Kim

Ho Sik Chang

Jung Hyun Park

You In Park

Hang Kyo Jin

Ji Na Choi

Jong An Kim

Oh Yun Kwon

Won Young Lee

Jong Ah Kim

Kil Wan Chang

Hyo Sang Yun

Hong Chan Ahn

Beon Sik Kim

Hongchan Ahn

Il Jeong Heo

Disclosed herein are an activated carbon catalyst for hydrogen peroxide decomposition, a preparation method thereof and a hydrogen peroxide decomposition method using the same. The activated carbon catalyst for hydrogen peroxide decomposition, provided in an aspect of the present invention may be easily prepared through the carbonization and activation of an ion exchange resin, and safer and higher decomposition efficiency of hydrogen peroxide may be achieved than the conventional catalyst for hydrogen peroxide decomposition through the control of the manganese content and pore properties in the catalyst.

Activated carbon catalyst for hydrogen peroxide decomposition, method for producing same, and method for decomposing hydrogen peroxide by using same

The present invention provides a solid-phase catalyst for decomposing hydrogen peroxide comprising a permanganate salt and a manganese (II) salt. The solid-phase catalyst stays a solid state in the form of nanoparticles at the time of hydrogen peroxide decomposition, and thus can be recovered for reuse and also has an excellent decomposition rate. In the method for producing a solid-phase catalyst for decomposing hydrogen peroxide according to the present invention, a solid-phase catalyst is produced from a solution containing a permanganate salt, a manganese (II) salt, and an organic acid, so that the produced solid-phase catalyst is precipitated as a solid component even after a catalytic reaction, and thus is reusable and environmentally friendly, and cost reduction can be achieved through the simplification of a catalyst production technique.

Solid-phase catalyst for decomposing hydrogen peroxide and method for producing same

The present invention relates to a monolith catalyst for reforming reaction, and more particularly, to a thermally stable (i.e. thermal resistance-improved) monolith catalyst for reforming reaction having a novel construction such that any one of Group 1A to Group 5A metals are used as a barrier component in the existing catalyst particles to inhibit carbon deposition occurring during the reforming reaction in a process for formation of a reforming monolith catalyst while improving thermal durability as well as non-activation of the catalyst due to a degradation.

Thermally stable monolith catalyst for reforming reaction

The present invention relates to a monolith catalyst for a carbon dioxide reforming reaction and to a preparation method for same, and more specifically the invention provides a preparation method for a monolith catalyst for a methane reforming reaction using carbon dioxide, the method comprising a step of mixing and impregnating a support in a metal precursor solution, coating a monolith substrate with the solution resulting from the mixing and impregnating, drying same and then calcining the monolith substrate coated with the solution resulting from the mixing and impregnating.

Monolith catalyst for carbon dioxide reforming reaction, preparation method for same, and preparation method for synthesis gas using same

The present invention provides a method for preparing a BaX type zeolite granules comprising: adding a carbohydrate-based molding promoter to NaX type zeolite powder and thereto subsequently spraying and blending alumina sol and silica sol to form granules of the mixture; heating the formed granules to convert the alumina and silica component to aluminosilica so as to generate pores inside the formed granules; hydrothermally treating the resulted granules in a sodium hydroxide aqueous solution under the conditions for zeolite synthesis, thereby converting a portion of the aluminosilica to zeolite; and carrying out ion-exchanging by Ba ions. The present invention also provides BaX type zeolite granules which have excellent strength and can be suitably used as an adsorbent in simulated moving bed (SMB) application.

BaX type Zeolite granule and process for preparing the same

The present invention relates to a method for preparing a porous alumina which may be suitably used as a catalyst carrier, an adsorbent, and various surface coating agents and has a boehmite or pseudoboehmite structure having a fine and uniform particle size distribution and a large pore volume.

Method for preparing porous alumina

The present invention relates to a pearlescent pigment with large aspect ratio and a method of their preparation, and particularly to pearlescent pigments prepared by coating a metal or metal precursor on the flaky alpha-alumina crystals obtained by using an aluminum precursor aqueous solution and a zinc precursor aqueous solution as main ingredients. The crystals herein has an average particle thickness of 0.5 &#x3bc;m or less, an average particle diameter of 15 &#x3bc;m or higher and a large aspect ratio of 50 or higher, thereby being superior in gloss. The crystals show metal colors and interference colors of silver, gold, red, purple, blue and green.

Pearlescent pigments with large aspect ratio and a method of their preparation

The present invention relates to flaky alpha-alumina crystals with large aspect ratio and its preparation method, and particularly to flaky alpha-alumina crystals comprising aluminum oxide, zinc oxide and tin oxide, which are prepared by obtaining a mixed gel which are prepared by obtaining a mixed gel by means of hydrolysis of an aqueous aluminum precursor solution comprising aqueous flux, aqueous zinc precursor solution and tin precursor aqueous solution, followed by aging, drying and crystallization processes. The crystals herein have an average particle thickness of 0.5 &#x3bc;m or less, an average particle diameter of 30 &#x3bc;m or higher and an aspect ratio of 100 or higher, thus being useful as a substrate of high quality pearlescent pigments, an abrasive, ceramic material and a filling material.

Flaky alpha-alumina crystals with large aspect ratio and a preparation method of the same

The present invention relates to a flaky &#x3b1;-alumina crystal and a preparation method thereof. More particularly, the present invention relates to a flaky &#x3b1;-alumina crystal comprising aluminum oxide and zinc oxide, which is prepared by hydrolyzing an aluminum precursor solution containing a water-soluble flux and a zinc precursor solution to obtain a gel mixture and aging, drying, calcining and crystallizing it under a specific reaction condition, and a preparation method thereof. Since the flaky &#x3b1;-alumina crystal of the present invention has a thickness of less than 0.5 &#x3bc;m, an average particle diameter of at least 15 &#x3bc;m and an aspect ratio of at least 50, it is useful as high-quality pearlescent pigment material and filler for ceramic materials.

Flaky alpha-alumina crystal and a method of its preparation

The present invention relates to an improved method for manufacturing a crystalline layered sodium disilicate and more particularly, to the improved method for manufacturing the crystalline layered sodium disilicate comprising the steps including the preparation of granules in a certain ratio of anhydrous sodium silicate cullet, a starting material, in the presence of some binders such as water and an aqueous solution of sodium silicate, followed by a crystallization step of the granules, thus ensuring that a small amount of final product is recycled to the prior crystallization step in order to prevent the attachment of granules to an inner crystallization device, which occurs due to local sintering in a high-temperature crystallization condition of continual process and also to further enhance the unit productivity during the mass production of crystalline layered sodium disilicate.

Method for manufacturing crystalline layered sodium disilicate

Manufacturing method of complex molecular sieve compound

Process for preparing mesoporous crystalline material

Growing community of inventors

Daejeon, South Korea

Jeong Kwon Suh