Abstract:
본 발명은 숙신산을 포함하는 용액으로부터 사수소화퓨란을 제조하는데 사용되며, 균일한 기공성 탄소 100 중량부 및 상기 탄소에 담지된 귀금속 1~20 중량부를 포함하고, 비표면적이 900 m 2 /g 이상인 것을 특징으로 하는 균일한 기공성 탄소에 담지된 귀금속 담지 촉매 및 상기 촉매를 간편하고 경제적으로 제조할 수 있는 방법을 제공한다. 또한 본 발명은 상기 촉매를 이용하여 정제 과정을 거치지 않은 폐숙신산으로부터 우수한 수율로 사수소화퓨란을 제조하는 방법을 제공한다.
Abstract:
PURPOSE: A precious metal supported catalyst dipped to even porosity carbon, the manufacturing method thereof, and a method of manufacturing Tetrahydrofuran from succinic acid using the catalyst are provided to have regular pore structure, have excellent physical property having wide specific surface area, and large pore volume, let the precious metal highly diffused inside the even pore of carbon carrier, and have excellent catalyst activity. CONSTITUTION: A precious metal supported catalyst comprises 100 parts by weight of even porosity carbon and 1~20 parts by weight of precious metal dipped in the carbon. Specific surface area of precious metal supported catalyst is over 900 m / g. The precious metal supported catalyst is used for manufacturing Tetrahydrofuran from the solution including succinic acid. The supported catalyst has total pore volume more than 1.26 cm^2 per catalyst 1 g. The precious metal is selected from the group of rhenium (Re), ruthenium (Ru), palladium (Pd), platinum (PT), rhodium (Rh) and the mixture. [Reference numerals] (AA) Conversion rate of succinic acid; (BB) Yield of furan tetrahydride
Abstract:
본 발명은 화학식 H 3 A로 표시되는 12-텅스토인산, 12-몰리브도인산, 12-텅스토실리콘산 및 12-몰리브도실리콘산으로 구성된 군으로부터 선택된 1 종 이상의 케긴(Keggin) 구조의 헤테로폴리산을 1가의 양이온과 양이온 치환하여 형성된 화학식 M x H 3.0-x A(상기 화학식 중 M은 알칼리금속 이온 또는 암모늄 이온이며, 2≤X<3)의 양이온이 치환된 헤테로폴리산 촉매로서, 알파 탄소-산소-4 탄소 결합을 포함한 리그닌을 분해하는 것을 특징으로 하는 알파 탄소-산소-4 탄소 결합을 포함한 리그닌 화합물 분해용 양이온 치환된 헤테로폴리산 촉매, 상기 촉매에 담지된 귀금속 촉매 및 상기 촉매를 이용한 알파 탄소-산소-4 탄소 결합을 포함한 리그닌 화합물 분해 방법에 관한 것으로, 본 발명의 리그닌 화합물 분해용 양이온 치환된 헤테로폴리산 촉매 및 양이온 치환 헤테로폴리산에 담지된 귀금속 촉매를 알파 탄소-산소-4 탄소 결합을 포함한 리그닌 화합물의 분해 공정에 사용할 경우 저온, 저압하에서도 리그닌 화합물을 분해하여 페놀, 벤젠 등 고가의 방향족 화합물을 높은 수율로 얻을 수 있다.
Abstract:
Provided are a precious metal-supported catalyst comprising: 100 parts by weight of carbon carrier which has uniform pore structure; 1-20 parts by weight of transition metal supported on the carbon carrier; and 1-10 parts by weight of precious metal supported on the carbon carrier, having a specific surface area of greater than or equal to 450 m^2/g, and preparing a mixture of 1,4-butanediol and dimethylsuccinate from a solution including succinic acid, and a method for preparing the precious metal-supported catalyst. Also, provided is a novel catalyst reaction process which can effectively prepare 1,4-butandiol from succinic acid using the precious metal-supported catalyst.
Abstract:
PURPOSE: A ruthenium catalyst supported on porous carbon support synthesized by a surfactant-templating method, a method for preparing the same, and a method for producing gamma-butyrolactone using the catalyst are provided to activate the hydrogenation of succinic acid. CONSTITUTION: A method for preparing a ruthenium catalyst supported on porous carbon support includes the following: a carbon precursor and a surfactant are dissolved in an acid solution, and a silica precursor is added into the dissolved solution to obtain a carbon/surfactant/silica complex; the complex is dried and aged at a temperature between 80 and 120 deg C under an air condition to obtain partially carbonated carbon/surfactant/silica complex; the partially carbonized complex is treated with a sulfuric acid aqueous solution; the treated complex is washed, filtered, and carbonated at a temperature between 800 and 1000 deg C; silica template components are eliminated from the carbonated complex based on hydrofluoric acid to obtain a porous carbon support; and a ruthenium precursor is impregnated in the porous carbon support. [Reference numerals] (AA,BB,CC) Sucrose; (DD) Hydrothermal synthesis; (EE) Silica precursor; (FF,HH) Heat; (GG) Surfactant silica precursor; (II) Carbon slurry; (JJ) Carbon/silica slurry; (KK) Carbon/silica/surfactant slurry; (LL,MM,OO) Carbonization; (NN,PP) Hydrofluoric acid treatment; (QQ) Carbon support manufactured by a hydrothermal method; (RR) Carbon support manufactured by a templating method; (SS) Carbon support manufactured by a surfactant-templating method
Abstract:
본 발명은 양이온 치환된 헤테로폴리산 촉매를 이용한 리그닌 화합물 분해방법에 관한 것으로, 보다 상세하게는 리그닌 화합물을 분해하여 방향족 화합물을 생산하는 리그닌 화합물 분해방법에 있어서, 화학식 N y M x H 3.0-ny-x PW 12 O 40 (상기 화학식 중 N은 팔라듐 이온, 로디움 이온, 백금 이온, 망간 이온, 수은 이온, 철 이온, 코발트 이온 및 구리 이온으로 구성된 군으로부터 선택된 1종 이상이고, M은 알칼리금속 이온 또는 암모늄 이온이며, 0≤y≤0.2이고 1≤x≤3이며, n은 N의 전하수)으로 표현되는 양이온 치환된 헤테로폴리산을 촉매 존재하에 분해반응이 수행되는 것을 특징으로 하는 양이온 치환된 헤테로폴리산 촉매를 이용한 리그닌 화합물 분해방법 본 발명에 제시된 공정은 기존의 리그닌 분해에 사용된 열분해 방법과 수첨 분해 방법보다 저온 (120~280 o C)과 저압 (10 기압)에서 반응이 이루어지며, 리그닌 분해 효율이 70%이상 보이는 고효율 에너지 절약형 리그닌 분해 공정이다.
Abstract:
PURPOSE: A precious metal catalyst being immersed in activated carbon aerogel including cation exchange heteropoly acid and a decomposition method of lignin compound by using the same are provided to replace the conventional lignin pyrolysis method carried out under the existing condition of high temperature and high pressure (400°C, 50 atmosphere). CONSTITUTION: A precious metal catalyst being immersed in activated carbon aerogel including cation exchange heteropoly acid selectively disassembles a carbon-oxygen-carbon bond of an inner bond of lignin compound to produce an aromatic compound and is indicated as the chemical formula: M/Q_xH_3.0-xPW_12O_40/ACA. The precious metal catalyst is manufactured by: exchanging a hydrogen ion with one or more cation selected from alkaline metal ions or ammonium ions to produce heteropoly acid; immersing the heteropoly acid within the range of 5-70 weight% based on weight% of activation carbon aerogel to form activation carbon aerogel with an acid center; and immersing at least one precious metal selected from a group consisting of palladium, rhodium, and ruthenium and platinum in the activation carbon aerogel with the acid center within the range of 1-30 weight% based on weight% of activation carbon aerogel. A decomposition method of lignin compound by using the same comprises a step of decomposing lignin composition to produce an aromatic compound under the existence of the precious metal catalyst being immersed in activated carbon aerogel including cation exchange heteropoly acid, at 300°C or lower and 50 hydrogen atmosphere or lower. [Reference numerals] (AA) 4-phenoxyphenol conversion rate; (BB) Selectivity rate of main product; (CC) Yield rate of main product
Abstract:
PURPOSE: Cation-substituted heteropoly acid catalyst for decomposing lignin compounds containing alpha carbon-oxygen-4 carbon bond, noble metal catalyst supported on the catalyst, and a method for decomposing the lignin compounds using the catalyst are provided to improve the yield of aromatic compounds by effectively decomposing the alpha carbon-oxygen-4 carbon bond of lignin at low temperatures and pressures. CONSTITUTION: Cation-substituted heteropoly acid catalyst decomposes lignin compound containing alpha carbon-oxygen-4 carbon bond. The cation-substituted heteropoly acid catalyst is represented by M_xH_3.0-xA. In chemical formula, M is alkali metal ions or ammonium ions; and x is more than or equal to 2 and is less than 3. One or more keggin structured heteropoly acid is substituted with monovalent cation to form cation-substituted heteropoly acid catalyst. The keggin structured heteropoly acid is 12-phosphotungstic acid, 12-phosphomolybdic acid, 12-silicotungstic acid, and 12-silicomolybdic acid.
Abstract:
The present invention relates to a catalyst which produces an aromatic family by selectively decomposing a carbon-oxygen-carbon bond in an internal combination inside lignin, and is denoted by chemical formula: M/QxH3.0-xPW12O40/ACA-SO3H (M is one or more precious metal selected from the group consisting of palladium, rhodium, ruthenium, and platinum; QxH3.0-xPW12O40 is positive ion-exchanged heteropolyacid; ACA is active carbon aerogel; and -SO3H is a sulfonic acid group). The catalyst is produced by depositing 1-30 wt% of one or more precious metal selected from the group consisting of palladium, rhodium, ruthenium, and platinum based on the weight of the active carbon aerogel, on a carrier obtained by impregnating 5-70 wt% of positive ion-exchanged heteropolyacid on the carbon aerogel containing sulfonic acid which is produced by reacting high concentration sulfuric acid and the active carbon aerogel and combining 0.5-5 wt% of sulfonic acid on the surface of the active carbon aerogel based on the weight of the active carbon aerogel.
Abstract:
본 발명은 산점을 포함한 활성 카본 에어로젤에 담지된 귀금속 촉매, 그 제조방법 및 상기 촉매를 이용한 리그닌 화합물 분해 방법에 관한 것으로, 보다 상세하게는 목질계 바이오매스 구성 성분 중 리그닌의 탄소-산소 결합을 선택적으로 분해하여 방향족 화합물로 전환하는 촉매로서, 화학식 M/ACA-SO 3 H(상기 화학식 중 M은 귀금속이며, ACA는 활성 카본 에어로젤)으로 표현되며, 황함유량 기준으로 5 내지 30중량% 범위의 산점을 포함한 활성 카본 에어로젤에 팔라듐, 로듐, 루세늄 및 백금으로 구성된 군으로부터 선택된 1종 이상의 귀금속이 담지된 것을 특징으로 하는 산점을 포함한 활성 카본 에어로젤에 담지된 귀금속 촉매, 그 제조방법 및 상기 촉매를 이용한 리그닌 화합물 분해방법에 관한 것으로, 본 발명의 리그닌 모델 화합물 분해용 산점이 포함� � 활성 카본 에어로젤에 담지된 귀금속 촉매를 리그닌 분해 공정에 사용할 경우 저온, 저압 조건에서 리그닌 화합물을 분해하여 페놀, 벤젠 등 고가의 방향족 화합물을 높은 전환율과 수율로 생산할 수 있다.