청정기술 (Clean Technology)

  • 제30권2호
  • /
  • Pages.145-156
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  • 2024
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  • 1598-9712(pISSN)
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  • 2288-0690(eISSN)
한국청정기술학회 (The Korean Society of Clean Technology)
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페놀의 선택적 수소화 반응성 향상을 위한 Pd/C 촉매의 산 처리 효과

Effect of Acid Treatment on Pd/C Catalysts for Improving Selective Hydrogenation of Phenol

  • 박하윤 (한국생산기술연구원 울산기술실용화본부) ;
  • 김예은 (한국생산기술연구원 울산기술실용화본부) ;
  • 제정호 (부산대학교 응용화학공학부) ;
  • 이만식 (한국생산기술연구원 울산기술실용화본부)
  • Hayoon Park (Ulsan Division, Korea Institute of Industrial Technology (KITECH)) ;
  • Ye Eun Kim (Ulsan Division, Korea Institute of Industrial Technology (KITECH)) ;
  • Jungho Jae (School of Chemical Engineering, Pusan National University) ;
  • Man Sig Lee (Ulsan Division, Korea Institute of Industrial Technology (KITECH))
  • 투고 : 2024.05.08
  • 심사 : 2024.06.15
  • 발행 : 2024.06.30
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초록

탄소는 비표면적이 매우 크고 우수한 화학적 안정성을 지녀 촉매 지지체로 사용한 연구들이 활발히 진행되고 있다. 탄소를 지지체로 사용하는데 있어 전처리 과정은 필수적이다. 전처리를 통해 금속 입자의 성장을 제어해 안정화하고 지지체와 금속 입자 간 결합력을 향상시킬 수 있다. 본 연구에서는 표면 개질을 위해 탄소의 전처리를 실시하였으며 이를 촉매 지지체로 사용해 5 wt% Pd/C 촉매를 합성하였다. 제조된 촉매의 활성은 페놀 수소화 반응을 통해 평가되었다. 탄소 전처리 시 일반적으로 사용되는 질산과 비교하고자 유기산을 사용해 탄소 전처리를 진행하였고 이를 지지체로 사용해 촉매를 제조하였다. 글루콘산으로 처리된 촉매는 94.93%의 전환율과 92.76%의 사이클로헥사논 선택도를 나타내 질산으로 처리된 촉매보다 우수한 활성을 나타냈다. 따라서 유기산을 이용한 탄소의 전처리가 무기산 처리의 단점을 개선하는 것뿐만 아니라 촉매 성능 개선에 도움을 줄 수 있을 것으로 기대된다.

Carbon has a large specific area and excellent chemical stability, so research on its use as a catalyst support is actively conducted. When using carbon as a support, the pretreatment process is essential. Through pretreatment of carbon, the growth of metal nanoparticles can be controlled and the bonding strength between the support and metal particles can be improved. In this study, carbon was pretreated for surface modification and 5 wt% Pd/C catalysts were synthesized using it as a support. Catalytic activity was evaluated through phenol hydrogenation. To compare with nitric acid, which is commonly used in carbon pretreatment, carbon pretreatment was performed using organic acid. Pd/C treated with gluconic acid showed the highest activity, with 94.93% phenol conversion and 92.76% cyclohexanone selectivity. Therefore, it is expected that pretreatment of the carbon support using organic acid will not only overcome the disadvantages of inorganic acid treatment but also improve catalyst performance.

키워드

과제정보

본 연구는 한국생산기술연구원 기관주요사업(EH-24-0008)의 지원을 받아 수행된 연구결과입니다.

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