Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Catalytic Characteristic of Water-Treated Cu/ZnO/MgO/Al2O3 Catalyst for LT-WGS Reaction

LT-WGS 반응을 위한 Cu/ZnO/MgO/Al2O3 촉매의 수분처리에 의한 촉매 특성 분석

  • PARK, JIHYE (Graduate School of Energy Science and Technology, Chungnam National University) ;
  • BAEK, JEONG HUN (Korea Institute of Energy Research) ;
  • JO, GWANG HUI (Graduate School of Energy Science and Technology, Chungnam National University) ;
  • RASHEED, HAROON UR (Graduate School of Energy Science and Technology, Chungnam National University) ;
  • YI, KWANG BOK (Department of Chemical Engineering Education, Chungnam National University)
  • 박지혜 (충남대학교 에너지과학기술대학원) ;
  • 백정훈 (한국에너지기술연구원) ;
  • 조광희 (충남대학교 에너지과학기술대학원) ;
  • ;
  • 이광복 (충남대학교 화학공학교육과)
  • Received : 2019.01.31
  • Accepted : 2019.04.30
  • Published : 2019.04.30
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Abstract

In order to investigate the effect of water treatment on activity of WGS catalyst, $Cu/ZnO/MgO/Al_2O_3$ (CZMA) catalysts were synthesized by co-precipitation method. The prepared catalysts were water-treated at two different temperature (250, $350^{\circ}C$). Synthesized catalysts were characterized by using BET, SEM, $N_2O$ chemisorption, XRD, $H_2-TPR$ and XPS analysis. The catalytic activity tests were carried out at a GHSV of $28,000h^{-1}$ and a temperature range of $180-320^{\circ}C$. The reduction temperature decreased with water treatment and CZMA_250 catalyst showed the lowest reduction temperature and retained a large amount of $Cu^+$. Water-treated catalysts showed increased reactivity compared to untreated catalyst and the CZMA_250 catalyst showed higher catalytic activity on WGS reaction.

Keywords

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Fig. 1. SEM images of CZMA catalysts at (a, b) CZMA, (c, d) CZMA_250, (e, f) CZMA_350

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Fig. 2. XRD pattern of the CZMA catalysts

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Fig. 3. H2-TPR profiles of CZMA catalysts

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Fig. 4. Cu 2p XPS spectra of CZMA catalysts

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Fig. 5. Catalytic activities of CZMA catalysts

Table 1. BET analysis results of CZMA catalysts

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Table 2. Characteristics of Cu particle in CZMA catalysts

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