Patent application number | Description | Published |
20090143552 | METHOD OF POLYMERIZATION OF OLEFIN/ALPHA-OLEFIN USING ARYLOXY-BASED OLEFIN- (CO)POLYMERIZATION CATALYST - The present invention provides a method of polymerization of olefin or copolymerization of olefin/alpha-olefin using transition metal compound with an oxidation number of 3 as a catalyst and organo-aluminum compound as a co-catalyst, wherein the transition metal compound with an oxidation number of 3 is produced by reacting organo-magnesium compound with a compound which is formed by reacting transition metal compound having aryloxy group with an oxidation number of 4 or more with external electron donor. According to the present invention, an olefin (co)polymer with a narrow molecular weight distribution is obtained. | 06-04-2009 |
20090281259 | CATALYST FOR PROPYLENE POLYMERIZATION AND THE METHOD OF PROPYLENE POLYMERIZATION USING THE CATALYST - The present invention provides a catalyst for propylene polymerization and a method for propylene polymerization using the same, specifically, a catalyst for propylene polymerization, which is prepared by reacting dialkoxy magnesium with titanium halide compound or silane halide compound and internal electron donor in the presence of an organic solvent, and a method for propylene polymerization which can produce polypropylene having 99% or more of iso-tacticity index, by mixing and reacting said catalyst, alkyl aluminum, external electron donor and propylene. | 11-12-2009 |
20130012377 | BaX TYPE ZEOLITE GRANULE AND PROCESS FOR PREPARING THE 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. | 01-10-2013 |
20130090509 | Single-Step Precipitation Method of Producing Magnesia-zirconia Complex Carrier for Catalyst for Oxidative Dehydrogenation of n-Butane, Magnesium Orthovanadate Catalyst Supported on Magnesia-zirconia Complex Carrier, and Method of Producing n-Butene and 1,3-Butadiene Using Said Catalyst - The present invention discloses a method of producing a magnesia-zirconia complex carrier for a catalyst for oxidative dehydrogenation of n-butane through a single-step precipitation process wherein the oxidative dehydrogenation of n-butane is to produce n-butene and 1,3-butadiene from n-butane; a method of producing a magnesium orthovanadate catalyst supported by thus prepared magnesia-zirconia complex carrier; and a method of producing n-butene and 1,3-butadiene using said catalyst. | 04-11-2013 |
20140056805 | METHOD FOR PREPARATION OF MESOPOROUS ZEOLITES - The provided is a preparation method of a mesoporous zeolite, particularly a method for preparing mesoporous zeolite through a simple process without using costly materials such as an organic amine template or a surfactant. | 02-27-2014 |
20140309470 | PREPARATION METHOD OF PLATINUM/TIN/ALUMINA CATALYST FOR DIRECT DEHYDROGENATION OF n-BUTANE AND METHOD FOR PRODUCING C4 OLEFINS USING SAID CATALYST - The provided is a preparation method of a platinum/tin/alumina catalyst which comprises platinum as an active component having high activity to direct dehydrogenation of n-butane, tin capable of preventing platinum particles from being sintered and maintaining a size of the platinum particles to be small, thereby improving dispersibility and increasing an amount at an active site during the dehydrogenation and also capable of suppressing carbon deposition, thereby increasing stability of the catalyst, and as an support for supporting them, an alumina support which is known as being suitable for direct dehydrogenation of n-butane and is capable of maintaining high dispersibility of the platinum with high thermal and mechanical stability, and a method for producing high value-added C4 olefins through direct dehydrogenation of inexpensive n-butane by using the catalyst prepared by the preparation method. | 10-16-2014 |
20150024929 | METHOD FOR PREPARING MAGNESIA-ZIRCONIA COMPOSITE CARRIER FOR CATALYZING OXIDATIVE DEHYDRATION OF NORMAL-BUTANE, METHOD FOR PREPARING MAGNESIUM ORTHOVANADATE CATALYST SUPPORTED BY MAGNESIA-ZIRCONIA COMPOSITE CARRIER PREPARED THEREBY, AND METHOD FOR PREPARING NORMAL-BUTENE AND 1,3-BUTADIENE USING MAGNESIUM ORTHOVANADATE CATALYST - The present invention discloses a method of producing a magnesia-zirconia complex carrier for a catalyst for oxidative dehydrogenation of n-butane by sol-gel method; a method of producing a magnesium orthovanadate catalyst containing vanadium supported by said magnesia-zirconia complex carrier; and a method of producing n-butene and 1,3-butadiene using said catalyst. | 01-22-2015 |
20150038758 | PREPARATION METHOD OF PLATINUM/TIN/METAL/ALUMINA CATALYST FOR DIRECT DEHYDROGENATION OF n-BUTANE AND METHOD FOR PRODUCING C4 OLEFINS USING SAID CATALYST - The provided is a method for preparing a platinum-tin-metal-alumina catalyst by comprising: as an active ingredient, platinum which has a high activity in a direct dehydrogenation reaction of n-butane, tin which can increase the catalyst stability by preventing carbon deposition; additionally metal for reducing the level of catalyst inactivation over the reaction time; and an alumina carrier for supporting said components. Further, provided is a method for producing a high value product, C4 olefins from low cost n-butane by using the catalyst prepared by the method according to the present invention in a direct dehydrogenation reaction. | 02-05-2015 |