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송인규,Sang Hee Lee,Dong Ryul Park*,Heesoo Kim,Joohyung Lee,정지철,Sung Yul Woo,Myong Suk Kwon,Won Seob Song 한국화학공학회 2008 Korean Journal of Chemical Engineering Vol.25 No.5
Direct chlorination of glycerol to dichloropropanol (DCP) was conducted in a liquid-phase batch rector using homogeneous H3PW12O40 heteropolyacid (HPA) catalyst. The effect of reaction conditions (reaction time, reaction pressure, reaction temperature, and catalyst amount) on the catalytic performance of H3PW12O40 in the direct preparation of DCP from glycerol was examined. The optimum reaction pressure and reaction temperature were found to be 10 bar and 130 oC, respectively. The reaction temperature was more crucial than the reaction pressure in improving the selectivity to DCP. Selectivity to DCP increased with increasing reaction time and with increasing catalyst amount. Acid sites of H3PW12O40 catalyst favorably devoted to the chlorination of glycerol. H3PW12O40 served as an efficient catalyst in the direct preparation of DCP from glycerol under the mild reaction conditions.
폴리페닐렌 옥사이드 막반응기에서 t - Butyl Alcohol 합성
송인규,이화영,김재진 ( In Kyu Song,Wha Young Lee,Jae Jin Kim ) 한국화학공학회 1993 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.31 No.1
The t-butyl alcohol synthesis was carried out in a batch reactor and a polyphenylene oxide membrane reactor using concentrated aqueous 12-tungstophosphoric acid catalyst. The prepared aqueous catalyst solution in a batch reactor showed a good catalytic activity in the isobutene hydration reaction. The membrane reactor showed the better performance than the batch reactor under the same reaction conditions. In addition to this, the recovery of 12-tungstophosphoric acid was possible at the end of the reaction by using the nonporous polypenylene oxide membrane in this membrane reactor.
송인규,Song, In-Gyu 에너지절약전문기업협회 2008 esco Vol.55 No.-
에너지원의 대부분을 수입하고 있는 우리나라는 현재 에너지원의 수입비용 상승에 따라 기업의 에너지비용 또한 급상승하고 있는 상황이다. 이러한 에너지 비용의 급상승은 기업의 생산원가상승의 주요 원인이 되며 이는 지금 기업 경쟁력의 약화를 초래하고 있다. 이러한 상황에서 에너지 절감을 통한 생산원가의 절감은 곧 기업의 성패와도 직결되어 있다고 해도 과언이 아니다. 그렇다면 기업 입장에서 에너지 절감을 위해 할 수 있는 최선의 방법은 무엇인가? 바로 ESCO를 활용하여 기술적, 경제적 부담없이 에너지절약시설을 설치하는 것이다.
송인규,이종국,송재천,이화영 ( In Kyu Song,Jong Koog Lee,Jae Cheon Song,Wha Young Lee ) 한국공업화학회 1994 공업화학 Vol.5 No.3
에탄올 전화반응 및 MTBE (methyl t-butyl ether)분해반응을 통하여 헤테로폴리산 촉매가 지니는 표면 및 내부 산점의 역할과 형성에 대하여 살펴 보았다. 12-텅스토인산에서 에탄올 탈수반응을 수행할 경우 디에틸에테르는 표면 산점에서 생성되며 에틸렌은 촉매 내부산점에서 생성된다. 물은 산점을 강화하는 역할을 하지만 유기염기의 경우 내부 산점을 약화시킨다. 금속염의 산점 형성은 결정수의 가수분해 혹은 금속의 부분적 치환에 따른 양성자에 기인하며 The role and the formation of surface and bulk acid sites of heteropoly acids were studied by examining ethanol conversion and MTBE (methyl t-butyl ether) decomposition reaction. In ethanol dehydration diethylether was formed on the surface acid site of 12-tungstophosphoric acid, whereas ethylene was formed in the bulk acid site of the catalyst. It was revealed that water reinforced the bulk acid site of the catalyst, while organic base decreased the bulk acid function of the catalyst. The formation of acid sites of metal salts was due to hydrolysis of crystalline water and/or partial substitution of metal, and with hydrogen treatment, the acid site was reappeared. Also catalyst design as a selective oxidation catalyst was possible by controlling acid function of heteropoly acid catalyst.
고분자와의 블랜딩에 의한 헤테로폴리산의 촉매 특성 제어
송인규,이종국,이화영 ( In Kyu Song,Jong Koog Lee,Wha Young Lee ) 한국공업화학회 1994 공업화학 Vol.5 No.5
Dimethylformamide를 공통용매로 하여 H₃PMo_(12)O_(40)와 polysulfone를 동시에 녹여 분리막 형태의 H₃PMo_(12)O_(40)-polysulfone 필름을 제조하였다. SEM 및 EDX 분석 결과 필름 촉매상에서 H₃PMo_(12)O_(40)는 매우 고른 상태로 잘 분산되어 있음을 확인되었다. ESCA 분석결과에 의하면 Mo의 산화상태에는 변화가 없었다. 에탄올 전환반응에서 H₃PMo_(12)O_(40)-polysulfone 필름 촉매는 H₃PMo_(12)O_(40)보다 낮은 산반응특성과 높은 산화반응 특성을 보였으며, 산화반응의 활성은 약 10배 정도 크게 나타났다. 산 특성의 감소는 H₃PMo_(12)O_(40)의 산점과 강하게 결합된 dimethylformamide에 기인하여, 산화특성의 증가는 촉매의 고른 분산에 기인하였다. 흡착실험 결과 블랜딩 후 H₃PMo_(12)O_(40)의 표면 특성은 크게 증가하였으나 내부 특성은 큰 변화가 없는 것으로 나타났다. 따라서 헤테로폴리산을 고분자와 블랜딩시킬 경우 헤테로폴리산이 지니는 산 및 산화 환원 특성의 제어는 물론 촉매의 표면 및 내부 특성 제어가 가능할 것으로 여겨진다. A membrane-like H₃PMo_(12)O_(40)-polysulfone film was prepared by blending H₃PMo_(12)O_(40) with polysulfone using dimethylformamide as a common solvent. SEM and EDX analysis showed that H₃PMo_(12)O_(40) was uniformly and finely distributed in the film catalyst. The ESCA measurement also revealed that the oxidation state of Mo was not changed. The H₃PMo_(12)O_(40)-polysulfone catalyst showed lower activity for acid-catalyzed reaction and higher activity for oxidation reaction than H₃PMo_(12)O_(40) in ethanol conversion reaction. The oxidation activity of the film catalyst was about 10 times higher than H₃PMo_(12)O_(40). The decrease of acidic activity was due to DMF strongly adsorbed in acid sites of H₃PMo_(12)O_(40) whereas the increase of oxidation activity was mainly due to uniform distribution of H₃PMo_(12)O_(40). Adsorption results showed that the surface character of H₃PMo_(12)O_(40) was drastically increased, while the bulk property of that was almost same after blending. It is suggested that the control of surface/bulk property as well as acid/redox property of heteropoly acid would be possible by blending it with a polymer.
송인규,Dong Ryul Park*,Ung Gi Hong,Sun Ho Song,서정길,백성현,정진석 한국화학공학회 2010 Korean Journal of Chemical Engineering Vol.27 No.2
Acidity of polyatom-substituted HnPW11M1O40 (M=V, Nb, Ta, and W) Keggin heteropolyacids (HPAs)was measured by NH3-TPD experiments. Acidity decreased in the order of H3PW11W1O40>H4PW11V1O40>H4PW11Nb1O40>H4PW11Ta1O40. Vapor-phase dehydration of cyclohexanol was conducted as a model reaction to correlate the acidity with the acid catalysis of HPA catalysts. Yield for cyclohexene (a product by acid catalysis) increased with increasing acidity of HnPW11M1O40 (M=V, Nb, Ta, and W) HPA catalysts. The acidity of HnPW11M1O40 (M=V, Nb, Ta, and W)HPA catalysts could be utilized as a probe of acid catalysis for dehydration of cyclohexanol.