Structural and catalytic properties of Pt/ZnAl2O4 as catalyst for VOC total oxidation
Structural and catalytic properties of Pt/ZnAl2O4 as catalyst for VOC total oxidation
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DOI：
10.1016/j.cattod.2010.11.099
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发表时间：
2011-11-01
期刊：
影响因子：
5.3
通讯作者：
Zawadzki, Miroslaw
中科院分区：
文献类型：
--
作者：
Walerczyk, Wiktoria;Zawadzki, Miroslaw
采用微波辅助溶剂热法和非常规共沉淀法制备了尖晶石型铝酸锌作为铂催化剂载体。用X射线衍射仪、电子能谱、高分辨电子显微镜、-196℃下N-2吸附-脱附和H-2化学吸附等手段对含0.5%、1%和3%铂的催化剂进行了结构表征。考察了异丁烷总氧化反应的催化活性。制得的样品具有良好的性能，可作为VOC催化燃烧的铂载体。所有样品都具有纳米晶型，具有良好的尖晶石结构、高比表面积(S-比表面积100m(2)/g)和介孔结构、很好的金属分散性(高达96%)以及良好的异丁烷燃烧催化活性和热稳定性。VOCs作为大气的主要污染物之一，是一个环境问题，因此利用有效的催化燃烧来破坏它们是非常有吸引力的。(C)2011年，由爱思唯尔出版。
Spinel type zinc aluminates prepared through the methods of microwave-assisted solvothermal and non-conventional coprecipitation were used as platinum catalyst supports in this study. Structure of the catalysts containing 0.5, 1 and 3 wt.% Pt was characterized by means of XRD, EDS, HRTEM, N-2 adsorption-desorption at -196 degrees C and H-2 chemisorption. Catalytic activity was tested in the reaction of iso-butane total oxidation. Prepared samples possessed desired properties for application as platinum support for catalytic combustion of VOC. All samples exhibited nanocrystallinity with well defined spinel structure, high surface area (S-BET > 100 m(2)/g) and mesoporosity, very good metal dispersion (up to 96%) and good catalytic activity in iso-butane combustion with thermal stability. VOCs being one of the main pollutants of the air are an environmental problem so their destroying by using effective catalytic combustion is very attractive. (C) 2011 Published by Elsevier B.V.