Korean Chemical Engineering Research

  • 제56권5호
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  • Pages.641-646
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  • 2018
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  • 0304-128X(pISSN)
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  • 2233-9558(eISSN)
한국화학공학회 (The Korean Institute of Chemical Engineers)
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활성탄 담지 Co-B/C, Co-P-B/C 촉매를 이용한 NaBH4 가수분해 반응

Hydrolysis Reaction of NaBH4 Using Activated Cabon Supported Co-B/C, Co-P-B/C Catalyst

  • Oh, Sohyeong (Department of Chemical Engineering, Sunchon National University) ;
  • Kim, Youkyum (Department of Chemical Engineering, Sunchon National University) ;
  • Bae, Hyojune (Department of Chemical Engineering, Sunchon National University) ;
  • Kim, Dongho (Department of Chemical Engineering, Sunchon National University) ;
  • Byun, Younghwan (Department of Chemical Engineering, Sunchon National University) ;
  • Ahn, Ho-Geun (Department of Chemical Engineering, Sunchon National University) ;
  • Park, Kwon-Pil (Department of Chemical Engineering, Sunchon National University)
  • 투고 : 2018.08.09
  • 심사 : 2018.09.12
  • 발행 : 2018.10.01
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초록

휴대용 고분자전해질 연료전지의 수소발생용으로써 $NaBH_4$는 많은 장점을 갖고 있다. 본 연구에서는 활성탄 담지 Co-B/C, Co-P-B/C 촉매의 $NaBH_4$ 가수분해 특성에 대해 연구하였다. 촉매의 BET 표면적, 수소 수율, $NaBH_4$ 농도 영향, 촉매 내구성 등을 실험하였다. 활성탄에 담지시킴으로써 BET 면적이 비담지 촉매에 비해 2~3배 증가해 $500m^2/g$ 이상이 되었다. 활성탄 담지 촉매의 수소발생이 비담지 촉매보다 더 안정적이었다. 20 wt% $NaBH_4$에서 활성화 에너지가 59.4 kJ/mol로 Co-P-B/FeCrAlloy 촉매 보다 14% 낮았다. 활성탄 담지 촉매가 비담지 촉매에 비해 촉매 손실이 1/3~1/2로 감소해 활성탄에 촉매를 담지시킴으로써 내구성을 향상시킬 수 있었다.

Sodium borohydride, $NaBH_4$, shows a number of advantages as hydrogen source for portable proton exchange membrane fuel cells (PEMFCs). Properties of $NaBH_4$ hydrolysis reaction using activated carbon supported Co-B/C, Co-P-B/C catalyst were studied. BET surface area of catalyst, yield of hydrogen, effect of $NaBH_4$ concentration and durability of catalyst were measured. The BET surface area of carbon supported catalyst was over $500m^2/g$ and this value was 2~3 times higher than that of unsupported catalyst. Hydrogen generation of activated carbon supported catalyst was more stable than that of unsupported catalyst. The activation energy of Co-P-B/C catalyst was 59.4 kJ/mol in 20 wt% $NaBH_4$ and 14% lower than that of Co-P-B/FeCrAlloy catalyst. Catalyst loss on activated carbon supported catalyst was reduced to about 1/3~1/2 compared with unsupported catalyst, therefore durability was improved by supporting catalyst on activated carbon.

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참고문헌

  1. Commercial Drones: Highways in the Sky, Unmanned Aerial Systems (UAS), Market Shares, Strategies, and Forecasts, World- wide, 2015 to 2021, http//wintergreenresearch.com/reports/Commercial UAS.html.
  2. Bradley, T. H., Moffitt, B. A., Mavris, D. N. and Parekh, D. E., "Development and Experimental Characterization of a Fuel Cell Powered Aircraft," J. Power Sources, 171, 793-801(2007). https://doi.org/10.1016/j.jpowsour.2007.06.215
  3. Liu, B. H. and Li, Z. P., "A Review: Hydrogen Generation from Borohydride Hydrolysis Reaction," J. Power Sources, 187, 527-534(2009). https://doi.org/10.1016/j.jpowsour.2008.11.032
  4. Fernandes, R., Patel, N., Miotello, A. and Filippi, M., "Studies on Catalytic Behavior of Co-Ni-B in Hydrogen Production by Hydrolysis of $NaBH_4$ ," J. Mol. Catal. A: Chem., 298, 1-6(2009). https://doi.org/10.1016/j.molcata.2008.09.014
  5. Fernandes, R., Patel, N., Miotello, A., Jaiswal, R., and Korthari, D. C., "Stability, Durability, and Reusability Studies on Transition Metal-doped Co-B Alloy Catalysts for Hydrogen Production," Int. J. Hydrogen Energy, 36, 13379-13391(2011). https://doi.org/10.1016/j.ijhydene.2011.08.021
  6. Fernandes, R., Patel, N. and Miotello, A., "Hydrogen Generation by Hydrolysis of Alkaline $NaBH_4$ Solution with Cr-promoted Co-B Amorphous Catalyst," Appl. Catal. B, 92, 68-74(2009). https://doi.org/10.1016/j.apcatb.2009.07.019
  7. Fernandes, R., Patel, N. and Miotello, A., "Efficient Catalytic Prop- erties of Co-Ni-P-B Catalyst Powders for Hydrogen Generation by Hydrolysis of Alkaline Solution of $NaBH_4$," Int. J. Hydrogen Energy, 34, 2893-2900(2009). https://doi.org/10.1016/j.ijhydene.2009.02.007
  8. Moon, G. Y., Lee, S. S., Yang, G. R. and Song, K. H., "Effects of Organic Acid Catalysts on the Hydrogen Generation from $NaBH_4$," Korean J. Chem. Eng., 27(2), 474-479(2010). https://doi.org/10.1007/s11814-010-0072-3
  9. Demirci, U. B. and Garin, F., "Ru-based Bimetallic Alloys for Hydrogen Generation by Hydrolysis of Sodium Tetrahydroborate," J. Alloys and Compounds, 463, 107-111(2008). https://doi.org/10.1016/j.jallcom.2007.08.077
  10. Simagina, V. I., Netskina, O. V., Komova, O. V., Odegova, G. V., Kochubei, D. I. and Ishchenko, A. V., "Activity of $Rh/TiO_2$ Catalysts in $NaBH_4$ Hydrolysis: The Effect of the Interaction Between $RhCl_3$ and the Anatase Surface During Heat Treatment," Kinetics and Catalysis, 49(4), 568-573(2008). https://doi.org/10.1134/S0023158408040174
  11. Ye, W., Zhang, H., Xu, D., Ma, L. and Yi, B., "Hydrogen Gen- eration Utilizing Alkaline Sodium Borohydride Solution and Supported Cobalt Catalyst," J. Power Sources, 164, 544-548(2007). https://doi.org/10.1016/j.jpowsour.2006.09.114
  12. Simagina, V. I., Storozhenko, P. A., Netskina, O. V., Komova, O. V., Odegova, G. V., Samoilenko, T. Yu. and Gentsler, A. G., "Effect of the Nature of the Active Component and Support on the Activity of Catalysts for the Hydrolysis of Sodium Borohydride," Kinetics and Catalysis, 48(1), 168-175(2007). https://doi.org/10.1134/S0023158407010223
  13. Demirci, U. B. and Garin, F., "Promoted Sulphated-zirconia Cat- alysed Hydrolysis of Sodium Tetrahydroborate," Catal. Commun., 9(6), 1167-1172(2008). https://doi.org/10.1016/j.catcom.2007.10.028
  14. Chen, Y. and Kim, H., "Ni/Ag/silica Nanocomposite Catalysts for Hydrogen Generation from Hydrolysis of $NaBH_4$ Solution," Mater. Lett., 62, 1451-1454(2008). https://doi.org/10.1016/j.matlet.2007.08.084
  15. Hwang, B. C., Jo, A. R., Sin, S. J., Choi, D. K., Nam, S. W. and Park, K. P., "$NaBH_4$ Hydrolysis Reaction Using Co-P-B Catalyst Supported on FeCrAlloy," Korean Chem. Eng. Res., 51(1), 35-41(2013). https://doi.org/10.9713/kcer.2013.51.1.35
  16. Lee, H. R., Na, I. C. and Park, K. P., "Characteristics of Hydro- lysis Reaction Using Unsupported Catalyst at High Concentration of $NaBH_4$ Solutions," Korean Chem. Eng. Res., 54(5), 587-592(2016). https://doi.org/10.9713/kcer.2016.54.5.587
  17. Oh, S. J., Jung, H. S., Jeong, J. J., Na, I. C., Ahn, H. G. and Park, K. P., "Hydrolysis Reaction of $NaBH_4$ Using Unsupported Co- B, Co-P-B Catalyst," Korean Chem. Eng. Res., 53(1), 11-15(2015). https://doi.org/10.9713/kcer.2015.53.1.11
  18. Hwang, B. C., Jo, J. Y., Sin, S. J., Choi, D. K., Nam, S. W. and Park, K. P., "Study on the Hydrogen Yield of $NaBH_4$ Hydrolysis Reaction," Korean Chem. Eng. Res., 49(5), 516-520(2011). https://doi.org/10.9713/kcer.2011.49.5.516
  19. Hwang, B. C., Jo, A. R., Sin, S. J., Choi, D. K., Nam, S. W. and Park, K. P., "Durability of Co-P-B/Cu Catalyst for $NaBH_4$ Hydrolysis Reaction," Korean Chem. Eng. Res., 50(4), 627-631(2012). https://doi.org/10.9713/kcer.2012.50.4.627