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采用溶胶 凝胶法制备了铁酸钴纳米微粒催化剂 ,运用XRD、IR、TPR以及BET比表面测试等手段对所制备的样品进行了表征。研究了铁酸钴的结构和氧化还原性质 ,考察了铁酸钴对二氧化碳选择性氧化乙苯制苯乙烯的催化性能。结果表明 :制备的铁酸钴微粒的比表面积为 3 6 3m2 g,晶粒大小约为 3 0nm。在由二氧化碳选择性氧化乙苯制苯乙烯的反应中表现出较好的催化活性。
Cobalt ferrite nanoparticles were prepared by sol-gel method. The prepared samples were characterized by XRD, IR, TPR and BET specific surface area. The structure and redox properties of cobalt ferrite were investigated. The catalytic performance of cobalt ferrite for the selective oxidation of styrene to styrene by carbon dioxide was investigated. The results show that the prepared cobalt ferrite particles have a specific surface area of 363 m 2 g and a grain size of about 30 nm. In the selective oxidation of ethylbenzene to styrene by carbon dioxide, the reaction showed good catalytic activity.