Korea Research Institute of Chemical Technology

Sk Innovation Co., Ltd.

Hyundai Heavy Industries Co., Ltd.

Korea Gas Corporation

Daelim Industrial Co., Ltd.

Hyundai Engineering Co. Ltd.

Korea National Oil Corporation

Jong Hyeok Oh

Ki Won Jun

Wan Joong Kim

Jong Wook Bae

Yun Jo Lee

Myung Hee Park

Bong Jin Kim

Seok-Lyong Song

Keh-Sik Min

Jun-ho Ko

Sun Ju Park

Myung H Jung

Disclosed is a method for methanol synthesis using synthesis gas obtained from reforming of natural gas with carbon dioxide. First, synthesis gas is obtained from steam carbon dioxide reforming of methane, in which steam reforming of natural gas is carried out simultaneously with carbon dioxide reforming of methane, by using a catalyst (Ni/Ce/MgAlO, or Ni/Ce&#x2014;Zr/MgAlO) and processing condition capable of maintaining a predetermined ratio of carbon monoxide, carbon dioxide, and hydrogen [H/(2CO+3CO)=0.85-1.15]. Next, methanol synthesis is carried out by using the obtained synthesis gas and a catalyst system suitable for methanol synthesis with minimum byproduct formation (a catalyst system including a Cu&#x2014;Zn&#x2014;Al oxide containing CuO, ZnO, and AlOat a predetermined ratio in combination with a cerium-zirconium oxide obtained by a sol-gel process). In addition, unreacted synthesis gas remaining after the operation of methanol synthesis is recycled efficiently to improve the carbon availability (methane and COavailability) and energy efficiency in the overall process.

Method for methanol synthesis using synthesis gas generated by combined reforming of natural gas with carbon dioxide

The present invention relates to a method for preparing liquid hydrocarbons via a slurry phase Fischer-Tropsch (F-T) synthesis. In particular, the present invention relates to a method for preparing liquid hydrocarbons from syngas via slurry phase F-T synthesis using a catalyst, which can prevent the decrease in catalyst activity and filter clogging due to catalyst aggregation, simultaneously with improving selectivity for Cor higher hydrocarbons by using C-Calcohols having a high boiling point as an additive for a slurry reaction solvent or recycling the same alcohol separated from by-products that are generated during the F-T reaction. Since the method of the present invention is more carbon-effective and shows improved long-term stability of a reactor, it can be effectively used in the preparation of liquid hydrocarbons.

Preparation methods for liquid hydrocarbons by Fischer-Tropsch synthesis through slurry reaction

Quinolone compounds of the general formula ##STR1## pharmaceutical compositions active against bacterial infections containing such compounds, processes for the manufacture of the quinolone compounds and the compositions and the use of the quinolone compounds for the manufacture of pharmaceutical compositions for the treatment of bacterial infections.

Anti-bacterial quinolone- and naphthyridone-carboxylic acid compounds

Diazabicycloamine compounds of the general formula I and their acid salts ##STR1## wherein m represents an integer of 1 to 3,

Diazabicyclo amine compounds which are intermediates for anti-bacterial

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Daejeon, South Korea

Jong Hyeok Oh