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Articles in press
수소 및 고부가 탄소 동시 생산을 위한 Ni 기반 이중 금속 담지 촉매의 메탄 분해
Methane decomposition over Nickel based bimetallic catalyst for co-production of hydrogen and high-value carbon materials
Ki Cheol Kim2
Jae-Rang Youn1
Mincheol Kim1
Taesung Jung1
Woohyun Kim1
Sang Goo Jeon1†
Kyubock Lee1†
2Chungnam National University Graduate School of Energy Science and Technology, 1Korea Insititute of Energy Research Hydrogen Research Department, 1Korea Insititute of Energy Research Bioenergy and Resources Upcycling Research Laboratory, 1Chungnam National University Graduate School of Energy Science and Technology
In Press, Journal Pre-proof, Available online 1 February 2025
Abstract
본 연구에서 이산화탄소를 생성하지 않고 수소와 탄소를 동시 생산하는 메탄 분해 반응에서 Ni 기반 촉매에 첨가된 전이 금속이 반응 활성 및 내구성에 미치는 영향에 대해 알아보았다. 이중 금속 촉매는 침전법으로 합성된 CeO2에 Ni 및 다른 전이 금속(Fe, Co, Cu)을 습식함침 하는 방식으로 제조 하였다. 제조된 촉매는 열중량 분석기와 튜브 퍼니스 반응기를 사용하여 반응성을 평가하였으며, 촉매 성능 및 내구성은 Ni에 Cu를 첨가한 Ni-Cu/CeO2 촉매에서 가장 높은 결과를 얻었다. 이러한 활성 증가의 원인을 조사하기 위하여 XRD, BET, H2-TPR과 같은 촉매 특성 분석들을 진행하였다. 또한, 이중 금속 촉매를 사용하는 경우에 첨가하는 금속에 따라 촉매 표면에 생성되는 결정성 탄소의 특성들을 확인하였다.
This study investigated the catalytic activity and durability of bimetallic catalysts for the methane decomposition reaction, which produces hydrogen and carbon materials without emitting carbon dioxide. The bimetallic catalysts were synthesized by the wet impregnation of Ni and other transition metals (Fe, Co, Cu) onto CeO2, which was prepared via the precipitation method. The performance of the prepared catalysts was evaluated using thermogravimetric analysis (TGA) and a tubular furnace reactor (TFR). Among the bimetallic catalysts, Ni-Cu/CeO2 catalysts exhibited the highest performance in terms of activity and durability. The addition of Cu to the Ni-Cu/CeO2 catalyst resulted in improved catalytic activity and durability. To determine the synergistic effects of bimetallic metals on the catalytic activity of the CDM reaction, the catalysts were analyzed using XRD, BET, and TPR. Furthermore, the characteristics of crystalline carbon formed on the surface of the bimetallic catalysts were influenced by the type of transition metal added.
