自清洁钙钛矿型催化剂用于甲烷干气重整(英文)

【摘要】：Gas-to-liquid processes are generally used to convert natural gas or other gaseous hydrocarbons into liquid fuels via an intermediate syngas stream. This includes the production of liquid fuels from biomass‐derived sources such as biogas. For example, the dry reforming of methane is done by reacting CH4 and CO2, the two main components of natural biogas, into more valuable products, i.e.,CO and H2. Nickel containing perovskite type catalysts can promote this reaction, yielding good conversions and selectivities; however, they are prone to coke laydown under certain operating conditions. We investigated the addition of high oxygen mobility dopants such as CeO2, ZrO2, or YSZ to reduce carbon laydown, particularly using reaction conditions that normally result in rapid cok‐ing. While doping with YSZ, YDC, GDC, and SDC did not result in any improvement, we show that a Ni perovskite catalyst (Na0.5La0.5Ni0.3Al0.7O2.5) doped with 80.9 ZrO2 15.2 CeO2 gave the lowest amount of carbon formation at 800 °C and activity was maintained over the operating time. 【作者单位】： CenTACat School
【关键词】： Biogas Reforming Perovskite Oxygen mobility Dopant
【分类号】：O643.36;O623.11
【正文快照】： 1.Introduction Green sources of energy are continually being investigated as alternatives to fossil fuels, and among these, biogas, which is derived from the anaerobic digestion of biomass, is interesting from both a financial and environmental point of

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