Abstract:
본 발명은 촉매 및 이를 포함하는 전극에 관한 것으로서, 촉매는, 비정질 합금부를 포함하고, 비정질 합금부는, Cu, Ag, Au 중 어느 하나를 35at% 내지 65at% 포함하고, 잔부가 Ti, Zr 또는 Hf이며, 이산화탄소를 환원하여 탄화수소로 전환하는 것을 특징으로 한다.
Abstract:
Animal and seed based triglycerides are oils used in cosmetics, pharmaceuticals, animal feed, energy generation, etc. These triglycerides or glycerol esters are a mixture of triglycerides and free fatty esters (FFA) along with unsaponifiables and gums (MIU). FFA may range from very low, 1% or less, to more than 40% in some rendered animal oils. Corn oil from the wet or dry process of ethanol production may have from 7 to 15% FFA. The varying amount of FFA presents numerous process issues for downstream users of these oils especially in the production of biodiesel, fatty acid methyl ester (FAME). FFA about 1 or 2 % requires esterification as well as transesterification for the production of FAME. What is needed is a method to perform Glycerolysis. This disclosure describes an improved catalyst system as well as process equipment and operating conditions to allow economical commercialization of Glycerolysis.
Abstract:
The subject of the invention is preparation of self-supporting, self-cleaning open-cell metal foams containing one or more transition metals of the following transition metals: Ag, Au, Co, Ni, Cr, Cu, Fe, Ir, Mn, Mo, Nb, Os, Pd, Pt, Re, Rh, Ru, Ta, Tc, W, one or more non- metals of the following non-metals: Ge, Sb, Si and/or their alloys, where in the first step, in a prescribed amount of one of the components A or B, or in the mixture of the two components A and B required to prepare a commercially available polyurethane foam (where A means a polyol and B means a diisocyanate or its derivative) the particles of the target material(s) are dissolved in elemental form or in the form of their alloy and/or oxide (oxide mixture), and in this way a polyurethane foam is prepared. The resulting composite polyurethane foam which contains the active material in dispersed, colloidal structure is subjected to heat treatment in vacuum, if desired in the presence of elemental carbon. By this metallurgical method, following decomposition of the organic components, a novel, earlier not-known open-cell transition metal or non-metal sintered solid foam is obtained. As a result of this method, from 20 transition metals (Ag, Au, Co, Ni, Cr, Cu, Fe, Ir, Mn, Mo, Nb, Os, Pd, Pt, Re, Rh, Ru, Ta, Tc, W) and 3 non-metals (Ge, Sb, Si) open-cell metal foams of one or more components (alloys) are prepared, which, owing to their high specific surface area and their rnechanical characteristics are suitable for application as catalysts or catalyst supports in hydrogenation or oxidation processes.
Abstract:
본 발명은 고성능 폴리옥소메탈레이트 촉매 및 이의 제조방법에 관한 것으로, 본 발명에 따르면 바나듐의 함량 등을 조절하여 촉매의 활성 및 선택도가 향상되고, 재현성이 우수할 뿐 아니라, 고수율 및 장수명으로 불포화 알데히드로부터 불포화 카르복실산을 생산할 수 있는 고성능 폴리옥소메탈레이트 촉매 및 이의 제조방법 등을 제공하는 효과가 있다.
Abstract:
Disclosed is a cyclopropanation process comprising the step of reacting an alkene compound having at least one carbon-carbon double bond with at least one dihaloalkane. The reaction is carried out in the presence of (i) particulate metal Zn, (ii) catalytically effective amount of particulate metal Cu or a salt thereof, (iii) at least one haloalkylsilane, and (iv) at least one solvent.
Abstract:
Described herein are a method, a column matrix, and a column utilizing heterogeneous metal catalysts for the preparation of cycloaddition compounds, such as triazoles and biomolecules. The heterogeneous metal catalysts is generated from the reduction of copper (II) precatalyst with the reducing agent.
Abstract:
La invención describe un complejo catalítico formado por la mezcla física de un catalizador y un conductor iónico, y su uso en la conversión de monóxido de carbono en hidrógeno, a través de la reacción de desplazamiento del gas de agua. El objeto de la presente invención es el desarrollo de sistemas más eficientes tanto en actividad como en estabilidad para la conversión de monóxido de carbono en hidrógeno a través de la reacción de desplazamiento del gas de agua o "water gas shift" mediante la generación de un sistema compuesto por un catalizador en íntimo contacto físico con un conductor iónico.