니켈담지촉매에서 합성가스 제조시 La 조촉매의 영향

• 영문명: Effect of La Promoter in the Production of Synthesis Gas over Supported Ni Catalysts
• 발행기관: 한국응용과학기술학회 (구.한국유화학회)
• 저자명: 황재영(Hwang JaeYoung) 김영국(Kim YoungKook) 임연수(Lim YunSoo) 박홍수(Park HongSoo) 함현식(Hahm HyunSik)
• 간행물 정보: 『한국응용과학기술학회지』한국유화학회지 제21권 제1호, 89~96쪽, 전체 8쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2004.03.31

영문 초록

The effect of La promoter on the carbon deposition and catalytic activity in the synthesis gas production with supported Ni catalysts was investigated. Active component was Ni and support was CeO2 and the promoter used was La. The reaction was carried out in a fixed bed reactor at 1 atm and 650{sim}800^{circ}C. The catalysts were prepared by two methods, the impregnation method and urea method. The catalysts prepared by the urea method showed 10 times higher surface area than those of prepared by the impregnation method. By the introduction of La promoter in the catalyst system, carbon deposition was remarkably reduced from 16% to 2%. It appears that the promoter facilitates the formation of a stable fluoride-type phase, which reduces the carbon deposition. The best catalytic activity and CO and H2 selectivities were obtained with 2.5wt% Ni/Ce(La)Ox catalyst at 750^{circ}C, giving 90% methane conversion, 93 and.80% of CO and H2 selectivities, respectively.

키워드

carbon deposition urea method synthesis gas production