Ammonia Synthesis over Ruthenium Catalysts Using Barium-Doped Zirconia as Supports Prepared by Citric Acid Method
作者： Jianxin LIN , Ziqing WANG , Liuming ZHANG , Jun NI , Rong WANG
DOI: 10.1016/S1872-2067(11)60413-0
关键词:
摘要: Abstract Barium-promoted zirconia (Ba-ZrO2) was synthesized by the citric acid method and used as supports for Ru/Ba-ZrO2 catalysts, which were prepared incipient wetness impregnation with K2RuO4 precursor. The obtained Ba-ZrO2 catalysts characterized X-ray diffraction CO2 temperature-programmed desorption. effect of Ba content on structure catalytic activity K-Ru/Ba-ZrO2 is discussed. formation BaZrO3 can improve significantly ammonia synthesis. concentration rate synthesis catalyst (molar ratio Ba: Zr 1:1) 9.24% 29.77 mmol/(g·h), respectively, at 425°C, 5.0 MPa, 10000 h−1. Improvements in electron conductivity basic nature may be main reasons such high
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