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1 Journal of the Korea Academia-Industrial cooperation Society Vol. 19, No. 8 pp , ISSN / eissn C 9 H 7 NHCrO 3 Cl 에의한알코올류의산화반응에서속도론과메카니즘 박영조 1, 김영식 1*, 김수종 2 1 강원대학교교양학부, 2 한라대학교신소재화학공학과 Kinetics and Mechanism of the Oxidation of Alcohols by C 9 H 7 NHCrO 3 Cl Young-Cho Park 1, Young-Sik Kim 1*, Soo-Jong Kim 2 1 The School of General Studies, Kangwon National University 2 Department of Advanced Materials & Chemical Engineering, Halla University 요약 C 9H 7NH과크롬 (VI) 산화물을반응시켜 C 9H 7NHCrO 3Cl을합성하였다. 적외선분광광도법 (FT-IR) 과원소분석으로구조를확인하였다. 여러가지용매하에서 C 9H 7NHCrO 3Cl을이용하여벤질알코올의산화반응을측정한결과, 용매의유전상수값 (ε), 이증가함에따라반응수율이증가했다. 그순서는 DMF (N,N'-디메틸포름아미드) > 아세톤 > 클로로포름 > 시클로헥센이었다. DMF 용매하에서 C 9H 7NHCrO 3Cl을이용하여여러가지알코올류의산화반응을측정한결과, C 9H 7NHCrO 3Cl은벤질알코올, 알릴알코올, 일차알코올및이차알코올류를그에대응하는알데히드나케톤 (75%-95%) 으로전환시키는효율적인산화제였다. DMF 용매하에서 C 9H 7NHCrO 3Cl을이용하여여러가지알코올류의선택적인산화반응을측정한결과, C 9H 7NHCrO 3Cl은이차알코올류존재하에서벤질알코올, 알릴알코올, 일차알코올류의선택적인산화제였다. H 2SO 4 촉매를이용한 DMF 용매하에서, C 9H 7NHCrO 3Cl은벤질알코올 (H) 과그의유도체들 (p-och 3, m-ch 3, m-och 3, m-cl, m-no 2) 을효과적으로산화시켰다. 전자받개그룹들은반응속도가감소한반면에전자주개치환체들은반응속도를증가시켰고, Hammett 반응상수 (ρ) 값은 0.69 (308K) 이었다. 본실험에서알코올의산화반응과정은속도결정단계에서수소화전이가일어났다. Abstract C 9H 7NHCrO 3Cl was synthesized by reacting C 9H 7NH with chromium (VI) trioxide. The structure of the product was characterized by FT-IR (Fourier transform infrared) spectroscopy and elemental analysis. The oxidation of benzyl alcohol by C 9H 7NHCrO 3Cl in various solvents showed that the reactivity increased with increasing dielectric constant(ε) in the following order: DMF (N,N'-dimethylformamide) > acetone > chloroform > cyclohexane. The oxidation of alcohols was examined by C 9H 7NHCrO 3Cl in DMF. As a result, C 9H 7NHCrO 3Cl was found to be an efficient oxidizing agent that converts benzyl alcohol, allyl alcohol, primary alcohols, and secondary alcohols to the corresponding aldehydes or ketones (75%-95%). The selective oxidation of alcohols was also examined by C 9H 7NHCrO 3Cl in DMF. C 9H 7NHCrO 3Cl was the selective oxidizing agent of benzyl, allyl and primary alcohol in the presence of secondary ones. In the presence of DMF with an acidic catalyst, such as H 2SO 4, C 9H 7NHCrO 3Cl oxidized benzyl alcohol (H) and its derivatives (p-och 3, m-ch 3, m-och 3, m-cl, and m-no 2). Electron donating substituents accelerated the reaction rate, whereas electron acceptor groups retarded the reaction rate. The Hammett reaction constant (ρ) was (308K). The observed experimental data were used to rationalize hydride ion transfer in the rate-determining step. Keywords : benzyl alcohol, Hammett reaction constant (ρ), hydride ion transfer, rate-determining step, substituted 본논문은 2017년도강원대학교대학회계학술연구조성비로연구하였음 ( 관리번호 ). * Corresponding Author : Young-Sik Kim(Kangwon National Univ.) Tel: jameskim@kangwon.ac.kr Received June 28, 2018 Revised (1st July 16, 2018, 2nd July 26, 2018) Accepted August 3, 2018 Published August 31,

2 C 9H 7NHCrO 3Cl 에의한알코올류의산화반응에서속도론과메카니즘 1. 서론크롬 (Ⅵ) 착물유도체가유기화합물의산화제로널리이용되어왔으나, 이시약은일차알코올의산화제로사용했을경우에생성되는알데히드가더욱산화되어카르복시산이되므로유기성인순수알데히드를얻기가힘들다. 크롬 (Ⅵ) 시약은보통수용성이며유기용매에불용성이어서산화반응을수용액에서수행해야하는용매의선택에제한점이있고, 알데히드를얻기에많은난점이있다. 또한반응이쉽게분해되어정확한메카니즘이분명치가않다. 그러므로유기용매에잘용해되고, 일차알코올을알데히드까지만산화시키는산화제의합성과그에따르는메카니즘규명이필요하게되었다. 보고된크롬 (VI) 착물의시약을이용한알코올의산화제관한연구을보면, Davis 등 [1-2] 은 pyrazin- ium-n-oxide chlorochromate, tripyridinium hydrochlo- ride chlorochromate, naphthyridinium dichromate, pyridinium chlorochromate, bipyridinium chlorochromate 를합성하였다. Mahanti등 [3-6] 은 quinolinium dichromate를이용하여치환벤질알코올류를산화반응시켜예상되는두가지반응경로의메카니즘을제시하였다. 알코올과크롬산이반응할때, 속도결정단계에서양성자 (H + ) 전이가직접적으로일어나므로활성화상태에서알코올의 α-위치탄소에양이온의생성되는경로와, 알코올과크롬산이반응할때크로메이트에스테르가먼저형성된후활성화상태에서산화제의 γ-위치인크롬 (VI) 에양이온이생성되는경로이다. 본연구에서는이러한산화제를연구하기위하여, C 9H 7NHCrO 3Cl을합성하여 FT-IR( 적외선분광광도법 ) 과원소분석으로구조를확인하였고, 다음과같은실험을하였다. 1. 시클로헥센, 1,4-디옥산, 사염화탄소, 클로로포름, 디클로로메탄, 아세톤, DMF 용매하에서, C 9H 7NHCrO 3Cl를이용하여벤질알코올의산화반응성을각각조사하다. 2. DMF 용매하에서 C 9H 7NHCrO 3Cl를이용하여벤질알코올, 알릴알코올, 일차알코올, 이차알코올류의산화반응성을각각조사하였다. 3. DMF 용매하에서 C 9H 7NHCrO 3Cl를이용하여이차알코올류존재하에서벤질알코올, 알릴알코 올, 일차알코올류를의선택적산화반응성을각각조사하였다. 4. DMF 용매하에서 C 9H 7NHCrO 3Cl를이용하여치환벤질알코올류 (p-och 3, m-ch 3, H, m-och 3, m- Cl, m-no 2) 의산화반응속도실험을하였고, 열역학적성질 (ΔH, ΔS, ΔG ) 과치환기효과에따른 Hammett 반응상수값등에서산화반응과정의메카니즘을조사하였다. 2. 실험 2.1 시약및분석기기크롬 (VI) 트리산화물, C 9H 7NH, 알코올류, 알데히드류, 케톤류, 치환벤질알코올류, 시클로헥센, 1,4-디옥산, 사염화탄소, 클로로포름, 디클로로메탄, 아세톤, DMF 등은 Aldrich Chem. Co. 의제품시약을사용하였다. 녹는점측정은 Electrothermal 1A 8103, Cr 분석은 X-Ray Fluorescence Spectro- meter(zsx-100e), C,H,N,O 분석은 Elemental Anal- yzer(flashea1112), FT-IR(Fourier Transform Infrared Spectrometer, Vertex 70), GC(Gas Chromatography) 측정은 Varian 3400으로, capillary column: DB-5(30m 0.253mm), DB-WAX(30m 0.253mm), DB-1(30m 0.253mm), carrier gas로는 N 2 를사용하여측정하였다. 2.2 C 9H 7NHCrO 3Cl 합성 6-M HCl 수용액에 mole의 chromium (VI) trioxide를녹인다음, ice bath에서 5 이하로유지시킨다. 이혼합물에 mole의 C 9H 7NH을서서히가하면서교반시켜생성된결정을물에서재결정한후, 데시케이터에서충분히건조시켜황색고체인 C 9H 7NHCrO 3Cl 60% 수율을얻었다 [1-2]. 2.3 여러가지용매하에서 C 9H 7NHCrO 3Cl를이용한벤질알코올의산화반응 C 9H 7NHCrO 3Cl mole과 benzyl alcohol mole을실온에서 cyclohexene, 1,4-diox- ane, acetone, chloroform, dichloromethane, carbon tetrachloride, DMF 등의용매 5 ml에각각반응시켰다 [7-11]. GC로측정한최대수율값이일정해졌을때를반응종료시간 379

3 한국산학기술학회논문지제 19 권제 8 호, 2018 으로하였다. 2.4 C 9H 7NHCrO 3Cl를이용한벤질알코올, 알릴알코올, 일차알코올및이차알코올류의산화반응 DMF 5mL 용매하에서 C 9H 7NHCrO 3Cl mole과알코올류 (benzyl alcohol, cinnamyl alcohol, decyl alcohol, 1-dodecanol, 4-decanol, 2-octanol, 2-heptanol, cyclohexyl methanol) 각각 mole 을실온에서반응시켰다 [7-11]. GC로측정한최대수율값이일정해졌을때를반응종료시간으로하였다. C 9H 7NHCrO 3Cl의적외선스펙트럼 (IR) 을 Fig.1에나타내었다. 적외선스펙트럼을고찰해보면, ν asym. (Cr-O):940cm -1, ν sym.(cr-o):900cm -1, ν(cr-cl):430cm -1, ν (N-H):3400cm -1, ν(c-h):3060cm -1, ν(c=c):1600cm -1, ν (N-H):1520cm -1, ν(c-h):1360cm -1, ν(c-n):1200cm -1 흡수 peak가나타났다. 2.5 C 9H 7NHCrO 3Cl를이용한이차알코올류의존재하에서벤질알코올, 알릴알코올, 일차알코올류의선택적산화반응 DMF 5mL 용매하에서 C 9H 7NHCrO 3Cl mole과알코올류 (4-decanol과 benzyl alcohol, phenethyl alcohol과 benzyl alcohol, 4-decanol과 cinnamyl alcohol, 2-heptanol과 cyclohexyl meth- anol, phenethyl alcohol과 1-dodecanol) 각각 mole 을실온에서반응시켰다 [7-11]. GC로측정한최대수율값이일정해졌을때를반응종료시간으로하였다. 2.6 C 9H 7NHCrO 3Cl를이용한치환벤질알코올류의산화반응속도 DMF 5mL 용매하에서, 온도변화 303K, 308K, 313K에따라 C 9H 7NHCrO 3Cl mole와치환벤질알코올류 (p-och 3, m-ch 3, H, m-och 3, m-cl, m- NO 2) 각각 mole 첨가한후, 촉매로 H 2SO mole을신속히용액에첨가한후, 시간에따라감소하는흡광도변화를측정하였다 [3-6]. 흡광도값은최대흡수파장 (λ max) 455nm에서산화제가환원되는부분을택하였다. 그리고속도상수 k 값은시간에따른 log[(c 9H 7- NHCrO 3Cl] 를도시하여구하였다. 이속도상수값으로부터 ΔH, ΔS, ΔG 와 Hammett 반응상수 ρ 값을계산하였다. 3. 실험결과및고찰 3.1 C 9H 7NHCrO 3Cl 합성고찰 Fig. 1. IR spectrum of C 9H 7NHCrO 3Cl 원소분석결과는 Table 1에나타내었고, 원소분석에서는이론값과측정값이잘일치함을보였다. 본실험과유사한크롬 (VI)-헤테로고리착물계열의적외선스펙트럼과원소분석을비교해본결과잘일치하였고, 참고문헌 [1-2] 값등으로부터고찰해본결과 C 9H 7NHCrO 3Cl가합성됨을확인하였다. Table 1. Elemental analysis of C 9H 7NHCrO 3Cl Elemental [%] Complex C H N O Cr Caculated Found 여러가지용매하에서 C 9H 7NHCrO 3Cl를이용한벤질알코올의산화반응성고찰 Table 2에서나타낸바와같이, 생성된알데히드의수율은최대수율치가일정함을보일때까지를반응종료시간으로하여 GC로수율을구하였다. GC 크로마토그램에서벤즈알데히드표준물질과벤질알코올의산화반응시생성되는벤즈알데히드을비교하였다. 380

4 C 9H 7NHCrO 3Cl 에의한알코올류의산화반응에서속도론과메카니즘 C 9H 7NHCrO 3Cl은 cyclohexene, 1,4-dioxane 등에는용해되지않았고, acetone, chloroform, carbon tetrachloride, dichloromethane 등에는일부가용해되었고, DMF에는모두용해되었다. DMF> 아세톤 > 클로로포름 > 시클로헥센용매순으로높은수율의벤즈알데히드로산화시켰다. Table 2. Summarized results of oxidation of benzyl alcohol by C 9H 7NHCrO 3Cl in DMF a) Solvents ε b) at 25 o C Yield of benzaldehyde(%) c) Time (h) cyclohexene ,4-dioxane carbon tetrachloride chloroform dichloromethane acetone DMF a)benzyl alcohol mole) and C 9H 7NHCrO 3Cl( mole) were combined in various solvents and then the mixtures were stirred at room temperature. b)dielectric constant. c)yields were caculated on the basis of GC data. 3.3 C 9H 7NHCrO 3Cl를이용한벤질알코올, 알릴알코올, 일차알코올및이차알코올류의산화반응성고찰 Table 3에서나타낸바와같이, 생성된알데히드와케톤의수율은최대수율치가일정함을보일때까지를반응종료시간으로하여 GC로구하였다. GC 크로마토그램에서각알코올의알데히드와케톤의표준물질과산화반응시생성되는알데히드와케톤을비교하였다. C 9H 7NHCrO 3Cl은 benzyl alcohol 95%, 알릴알코올 (cinnamyl alcohol) 95%, 일차알코올 (1-dodecanol, 4-decanol) 90, 80% 의알데히드로산화시켰고, 이차알코올 (4-decanol) 90% 의케톤으로산화시켰다. Table 3. Oxidation of benzyl, allyl, primary and secondary alcohols by C 9H 7NHCrO 3Cl in DMF a) Hydroxy compounds Carbonyl Yield Time compounds (%) b (h) benzyl alcohol benzaldehyde cinnamyl alcohol cinnamaldehyde decyl alcohol decyl aldehyde dodecanol 1-dodecanal phenethyl alcohol acetophenone decanol 4-decanone octanol 2-octanone heptanol 2-heptanone cyclohexyl methanol cyclohexanecarboxaldehyde a)alcohols( mole) and C 9H 7NHCrO 3Cl( mole) were combined in DMF and then the mixtures were stirred at room temperature. b)yields were calculated on the basis of GC data. 3.4 C 9H 7NHCrO 3Cl를이용한이차알코올류의존재하에서벤질알코올, 알릴알코올, 일차알코올류의선택적산화반응성고찰 Table 4에서나타낸바와같이, 생성된알데히드와케톤의수율은최대수율치가일정함을보일때까지를반응종료시간으로하여 GC로구하였었다. GC 크로마토그램에서각알코올의알데히드와케톤의표준물질과산화반응시생성되는알데히드와케톤을비교하였다. C 9H 7NHCrO 3Cl은 4-decanol(20%) 과 benzyl alcohol(85%), phenethyl alcohol(10%) 과 benzyl alcohol (75%), 4-decanol(15%) 과 cinnamyl alcohol(95%), 2-heptanol(15%) 과 cyclohexyl methanol(70%), phenethyl alcohol(25%) 과 1-dodecanol(80%) 등에서각각의선택성이나타났다. 그러므로산화제 C 9H 7NHCrO 3Cl은이차알코올류 (4-decanol, phenethyl alcohol) 존재하에서 benzyl alcohol, cinnamyl alcohol, cyclohexyl methanol 등을선택적으로산화시키는산화제임을알수있었다. Table 4. Selective oxidation of benzyl, allyl, primary alcohols in the presence of secondary alcohols by C 9H 7NHCrO 3Cl in DMF a) Mixtures of hydroxy compounds benzyl alcohol / 4-decanol benzyl alcohol / phenethyl alcohol cinnamyl alcohol / 4-decanol cyclohexyl methanol / 2-heptanol 1-dodecanol / phenethyl alcohol Yields(%) b) of aldehyde/ketone Time (h) 85 / / / / / a)alcohols( mole) and C 9H 7NHCrO 3Cl( mole) were combined in DMF and then the mixtures were stirred at room temperature. b)yields were calculated on the basis of GC data. 381

5 한국산학기술학회논문지제 19 권제 8 호, C 9H 7NHCrO 3Cl을이용한치환벤질알코올류의산화반응속도고찰 Table 5에서나타낸바와같이, 산화반응속도를측정한결과 k 값은온도가증가함에따라증가하였고, 치환기효과는전자를주는치환기 p-och 3, m-ch 3 에서 k 값이증가하였다. Table 6에서나타낸바와같이, ΔH 가양의값을, ΔS 가음의값을얻었다. Table 5. Rate constants for the oxidation of substituted benzyl alcohols a) by C 9H 7NHCrO 3Cl b) in the presence of acid[h 2SO 4] c) Substituents Rate constant 10 5 k(s -1 ) 303K 308K 313K p-och m-ch H m-och m-cl m-no a) mole. b) mole. c) mole. Table 6. Activation parameters for the oxidation of substituted benzyl alcohols in table 5 Substituents ΔH ΔS ΔG (KJmol -1 ) (Jmol -1 K -1 ) (KJmol -1 ) p-och m-ch H m-och m-cl m-no Fig. 3. Mechanism of the oxidation of substituted enzyl alcohols by C 9H 7NHCrO 3Cl Fig. 2에서나타낸바와같이, Hammett 도시로부터구한반응상수 ρ 값은 -0.69(308K) 로나타났다. 음 (-ρ) 의값의원인은알코올과크롬산의산화반응과정에서산촉매존재에서양성자가첨가되므로인해, 크롬 (VI) 에양이온을안정화시켜주는역할을하였기때문이다. 보고된문헌에서 Mahanti 등 [3-6] 이제시한문헌을참고하여, 본실험의 Fig. 3 메카니즘은알코올과크롬산이반응할때, 속도결정단계에서양성자 (H + ) 전이가직접적으로일어나므로, 활성화상태에서알코올의 α-위치탄소에양이온의생성되고, RC + HOH가형성되는단계의전이상태구조의반응중심인탄소원자가큰양하전을가진구조의메카니즘으로진행될것으로예상된다. 이상과같은고찰로부터 C 9H 7NHCrO 3Cl을이용하여알코올의산화반응메카니즘은 Fig. 3와같이 RC + HOH 중간체가형성되는단계가반응속도결정단계인두단계반응메카니즘으로진행됨을예상할수있다. 4. 결론 Fig. 2. The Hammett polt for the oxidation of substituted benzyl alcohols a) by C 9H 7NHCrO 3Cl b) in the c) presence of H 2SO 4 at 308K. a) mole. b) mole. c) mole. C 9H 7NHCrO 3Cl를합성하여적외선스펙트럼과원소분석으로합성됨을확인하였고, 이를산화제로이용하여알코올류의산화반응성과반응속도를측정한결과다음과같은결론을얻었다. 1. 여러가지용매하에서벤질알코올의산화반응은유전상수값이큰순서인, DMF> 아세톤 > 클로로포름 > 시클로헥센용매순으로산화반응성이높았다. 2. DMF 용매하에서, 알코올류의산화반응성을조사한결과, 벤질알코올, 알릴알코올, 일차알코올및이차알코올을 95-80% 로산화시켰다. 3. 알코올류의선택적산화반응에서, C 9H 7NH- CrO 3Cl은 382

6 C 9H 7NHCrO 3Cl 에의한알코올류의산화반응에서속도론과메카니즘 유기합성과정에서한분자내에여러가지 hydroxy group(benzylic, allylic, primary, second- ary) 들이존재하고있을때, 특정 hydroxy group 만을선택적으로산화시키는산화제로응용할수있다. 4. DMF 용매하에서치환벤질알코올류의산화반응속도측정한결과, Hammett 반응상수값은 -0.69(308K) 나타났다. 알코올과크롬산이반응할때속도결정단계에서양성자전이가일어나활성화상태에서알코올의 α-위치탄소에양이온의생성되는메카니즘으로진행될것으로예상된다. References Nucleophilic Substitution Reaction of 4-Substituted-2, 6-dinitrochlorobenzene with Benzylamines in MeOH-MeCN Mixtures, Bulletin of the Korean Chemical Society, Vol.31, No.11, pp , DOI: [9] T. J. Cho, K. S. Yoo, Synthesis of Pd/TiO 2 Catalyst for Aerobic Benzyl Alcohol Oxidation, Applied Chemistry for Engineering, Vol.25, No.3, pp , DOI: [10] K. W. Kim, S. M. Lee, S. C. Hong, A Study on Characterization for Catalytic Oxidation of Nitrogen Monoxide Over Mn/TiO 2 Catalyst, Applied Chemistry for Engineering, Vol.25, No.5, pp , DOI: [11] T. J. Cho, K. S. Yoo, Preparation of Pd/TiO 2 Catalyst Using Room Temperature Ionic Liquids for Aerobic Benzyl Alcohol Oxidation, Applied Chemistry for Engineering, Vol.26, No.3, pp , DOI: [1] H. B. Davis, R. M. Sheets, W. W. Pandler, High Valent Chromium Heterocyclic Complexes-II: New Selective and Mild Oxidants, Heterocycles, Vol.22, No.9, pp , DOI: [2] M. R. Pressprich, R, D. Willett, H. B. Davis, Preparation and Crystal Structure of Dipyrazinium Trichromate and Bond Length Correlation for Chromate Anions of the Form CrnO 3n , Inorganic Chemistry, Vol.27, No.2, pp , DOI: [3] D. Dey, M. K. Mahanti, Kinetics of Oxidation of Substituted Benzyl Alcohols by Quinolinium Dichromate, The Journal of Organic Chemistry, Vol.55, No.23, pp , DOI: [4] I. Nongkynrih, M. K. Mahanti, Quinolinium Dichromate Oxidations. Kinetics and Mechanism of the Oxidative Cleavage of Styrenes, The Journal of Organic Chemistry, Vol.58, No.18, pp , DOI: [5] I. Nongkynrih, M. K. Mahanti, Kinetics and Mechanism of the Oxidative Cleavage of Unsaturated Acids by Quinolinium Dichromate, Bulletin of the Chemical Society of Japan, Vol.67, No.8, pp , DOI: [6] B. Kuotsu, E. Tiewsoh, A. Debroy, M. K. Mahanti, Quinolinium Dichromate Oxidation of Diols: A Kinetics Study, The Journal of Organic Chemistry, Vol.61, No.25, pp , DOI: [7] R. Tayebee, Simple Heteropoly Acids as Water-Tolerant Catalysts in the Oxidation of Alcohols with 34% Hydrogen Peroxide, A Mechanistic Approach, Journal of the Korean Chemical Society, Vol.52, No.1, pp.23-29, DOI: [8] Y. S. Kim, H. J. Choi, I. S. Koo, K. Y. Yang, J. K. Park, I. S. Koo, Kinetics and Mechanism of 박영조 (Young-Cho Park) [ 정회원 ] < 관심분야 > 반응속도론, 정밀화학 1993년 8월 : 경남대학교대학원화학과 ( 이학박사 ) 1995년 3월 ~ 2007년 2월 : 부산대학교밀양캠퍼스강사 2008년 9월 ~ 2009년 8월 : 강원대학교삼척캠퍼스겸임교수 2009년 8월 : 강원대학교삼척캠퍼스강사 김영식 (Young-Sik Kim) [ 정회원 ] 1979 년 2 월 : 충북대학교대학원화학공학과 ( 공학석사 ) 1989 년 2 월 : 충북대학교대학원화학공학과 ( 공학박사 ) 1996 년 8 월 ~ 1997 년 8 월 : 영국 Strathclyde Univ. 방문교수 2010 년 2 월 ~ 2011 년 2 월 : 미국 Eastern Michigan Univ. 방문교수 2011 년 11 월 ~ 2013 년 12 월 : 한국가스안전공사비상임이사 1982 년 2 월 ~ 현재 : 강원대학교교양학부교수 < 관심분야 > 레올로지, 분리정제, 정밀화학 383

7 한국산학기술학회논문지제 19 권제 8 호, 2018 김수종 (Soo-Jong Kim) [ 정회원 ] 1991 년 2 월 : 충북대학교대학원화학공학과 ( 공학석사 ) 2000 년 3 월 : 동경농공대학대학원공학연구과기능재료공학 ( 공학박사 ) 1991 년 19 월 ~ 2003 년 8 월 : 중소기업청 2003 년 8 월 ~ 현재 : 한라대학교신소재화학공학과교수 < 관심분야 > 건설토목용고분자, 기능성고분자, 세라믹합성 384

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<393220B9DABFB5C1B62D DC7ECC5D7B7CEB0EDB8AE20C2F8B9B05B E687770> Journal of the Korea Academia-Industrial cooperation Society Vol. 14, No. 11 pp. 6039-6046, 2013 http://dx.doi.org/10.5762/kais.2013.14.11.6039 Cr(VI)- 헤테로고리착물 [Cr(VI)-2-methylpyrazine] 를이용한치환벤질알코올류의산화반응과메카니즘에관한연구

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