Patent application number | Description | Published |
20090012340 | Thermal-cracking method of hydrocarbon - The present invention relates to a thermal-cracking method of hydrocarbon using a hydrocarbon thermal-cracking apparatus including a tube type furnace having a radiation part for thermally cracking hydrocarbon feedstocks supplied together with steam and a convection part. A hydrocarbon thermal-cracking catalyst is packed in some or entire area of the tube placed in the radiation part of the tube type furnace, wherein the hydrocarbon thermal-cracking catalyst includes an oxide catalyst represented by CrZr | 01-08-2009 |
20110178332 | CATALYST FOR GAS-PHASE CONTACT OXIDATION OF HYDROCARBON, PREPARATION METHOD THEREOF AND GAS-PHASE OXIDATION METHOD OF HYDROCARBON USING THE SAME - The present invention provides a catalyst for use in gas-phase contact oxidation of hydrocarbon with an improved yield and selectivity, a preparation method thereof, and a method of a gas-phase oxidation of the hydrocarbon using the same. The catalyst comprises a composite metal oxide of Mo, V, Te and Nb; and a tungsten or tungsten oxide attached to the composite metal oxide, wherein an atomic molar ratio of the tungsten attached to the composite metal oxide to the molybdenum contained in the composite metal oxide ranges from 0.00001:1 to 0.02:1. | 07-21-2011 |
20110178333 | CATALYST FOR GAS-PHASE CONTACT OXIDATION OF HYDROCARBON, PREPARATION METHOD THEREOF AND GAS-PHASE OXIDATION METHOD OF HYDROCARBON USING THE SAME - The present invention provides a catalyst for use in gas-phase contact oxidation of hydrocarbon with an improved yield and selectivity, a preparation method thereof, and a method of a gas-phase oxidation of the hydrocarbon using the same. The catalyst comprises a composite metal oxide of Mo, V, Te and Nb; and a palladium or palladium oxide attached to the composite metal oxide, wherein an atomic molar ratio of the palladium attached to the composite metal oxide to the molybdenum contained in the composite metal oxide ranges from 0.00001:1 to 0.02:1. | 07-21-2011 |
20130302238 | CONTINUOUS MANUFACTURING APPARATUS AND METHOD FOR CARBON NANOTUBES HAVING GAS SEPARATION UNITS - The present invention relates to a continuous manufacturing apparatus for a carbon nanotube having gas separation units and a continuous manufacturing method for a carbon nanotube using the same, and more specifically, to a continuous manufacturing apparatus for a carbon nanotube having gas separation units and a continuous manufacturing method for a carbon nanotube using the same, in which the apparatus includes i) a reactor for synthesizing the carbon nanotube; ii) a separator for separating a mixed gas and the carbon nanotube transferred from the reactor; iii) a gas separation unit including more than one polymer membrane for removing in part or in whole of more than one component gas from the mixed gas separated; and iv) a recirculation pipe for recirculating the mixed gas without in part or in whole of the component gas to the reactor of carbon nanotube. According to the present invention, the present invention has an effect to provide the continuous manufacturing apparatus of the carbon nanotube and continuous manufacturing method using the same, in which it makes possible to perform a rapid processing; has excellent productivity and excellent conversion rate of carbon source; can significantly reduce the cost of production; can reduce energy consumption because a reactor size can be decreased as compared with capacity; and has a gas separation unit that not generate a waste gas. | 11-14-2013 |
20130315813 | APPARATUS AND METHOD FOR CONTINUOUSLY PRODUCING CARBON NANOTUBES - Disclosed are an apparatus and method for continuously producing carbon nanotubes. More specifically, disclosed are an apparatus for continuously producing carbon nanotubes including i) a reactor to synthesize carbon nanotubes, ii) a separator to separate a mixed gas from the carbon nanotubes transferred from the reactor, iii) a filter to remove all or part of one or more component gases from the separated mixed gas, and iv) a recirculation pipe to recirculate the filtered mixed gas to the reactor for carbon nanotubes. | 11-28-2013 |
20130336875 | APPARATUS AND METHOD FOR CONTINUOUSLY PRODUCING CARBON NANOTUBES - Disclosed are an apparatus and method for continuously producing carbon nanotubes. More specifically, disclosed are an apparatus for continuously producing carbon nanotubes including i) a reactor to synthesize carbon nanotubes, ii) a separator to separate a mixed gas from the carbon nanotubes transferred from the reactor, iii) a filter to remove all or part of one or more component gases from the separated mixed gas, and iv) a recirculation pipe to recirculate the filtered mixed gas to the reactor for carbon nanotubes. | 12-19-2013 |
20140127123 | APPARATUS AND METHOD FOR CONTINUOUSLY PRODUCING CARBON NANOTUBES - Disclosed are an apparatus and method for continuously producing carbon nanotubes. More specifically, disclosed are an apparatus for continuously producing carbon nanotubes including i) a reactor to synthesize carbon nanotubes, ii) a separator to separate a mixed gas from the carbon nanotubes transferred from the reactor, iii) a filter to remove all or part of one or more component gases from the separated mixed gas, and iv) a recirculation pipe to recirculate the filtered mixed gas to the reactor for carbon nanotubes. | 05-08-2014 |
20140255698 | CNT AND METHOD FOR MANUFACTURING THEREOF - Disclosed are carbon nanotubes and a method for manufacturing the same wherein the carbon nanotubes (CNTs) which comprise a three-component carbon nanotube catalyst containing a catalytic component and an active component and have a potato or spherical shape with a particle diameter distribution (Dcnt) of 0.5 to 1.0 can be manufactured at a high yield using an impregnated supported catalyst by simultaneously removing activity and a fine powder of the impregnated supported catalyst in an attempt to solve a drawback of conventional impregnation methods for producing CNTs, namely, the difficulty in improving a yield of CNTs. | 09-11-2014 |
20140309105 | METHOD FOR MANUFACTURING HOMOGENEOUS SUPPORTED CATALYST FOR CARBON NANOTUBES - Disclosed is a method for manufacturing a homogeneous supported catalyst for carbon nanotubes. Advantageously, the method induces deep impregnation of a catalyst in micro pores of a support by using high-temperature aging impregnation, thus providing a high CNT yield. | 10-16-2014 |
20140328744 | CARBON NANOTUBES AND METHOD FOR MANUFACTURING THE SAME - Disclosed are carbon nanotubes and a method for manufacturing the same. Advantageously, the method provides a high yield of potato or sphere-shaped non-bundled carbon nanotubes having a bulk density of 80 to 250 kg/m | 11-06-2014 |