120th General Meeting of the KCS

Type Oral Presentation
Area Current Trends in Environmental and Energy Chemistry
Room No. Room 301
Time THU 09:45-:
Code ENVR.O-4
Subject High coke resistance for dry reforming of methane reaction over Ni/BaZrO3 catalysts by temperature regulated chemical vapor deposition
Authors Soong Yeon Kim, Uhm Sunghyun1,*
Environment & Energy Research Team, Institute for Advanced Engineering, Korea
1Institute for Advanced Engineering, Korea
Abstract Dry reforming of methane has potential benefits from the environmental perspective as it involves the destruction of two greenhouse gases that can be produce the syngas. CH4 + CO2 → 2 CO + 2 H2 ΔH° = 247 kJ/mol Dry reforming of methane reaction has studies with transition metals and noble metals. Noble metals are show higher activity and stability than transition metals towards dry reforming of methane reaction, however noble metal is limited to industrial application by high cost. The nickel catalyst has attracted its high activity and low cost compared with noble metal catalyst, but is weak for coke deposition which leads to catalytic deactivation. Therefore, it is necessary to study the catalyst with resistance to coking. In the previous study about nickel based catalysts, the coke deposition is effected on the kinds of support materials. In general, metal support catalysts are prepared by wet impregnation of various support. This method is not uniform in the metal dispersibility of the surface and requires a multi-step process, which makes it difficult to industrial application. Therefore, we proposed new concept of the catalytic preparation which is temperature regulated chemical vapor deposition that is simple process than wet impregnation and is a method of sublimation of the solid precursor to dry coating the support. In this study, to reduce coke deposition, the perovskite such as BaZrO3 is used to support materials. The perovskite supported nickel catalyst is evaluated catalytic activity and coke resistance in dry reforming of methane reaction.
E-mail sykim086@naver.com