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Development of novel supported iridium nanocatalysts for special catalytic beds
Journal of Nanostructure in Chemistry ( IF 8.6 ) Pub Date : 2019-12-26 , DOI: 10.1007/s40097-019-00327-8 Zahra Amirsardari , Akram Dourani , Mohamad Ali Amirifar , Nooredin Ghadiri Massoom , Rahim Ehsani
中文翻译:
开发用于特殊催化床的新型负载型铱纳米催化剂
更新日期:2019-12-26
Journal of Nanostructure in Chemistry ( IF 8.6 ) Pub Date : 2019-12-26 , DOI: 10.1007/s40097-019-00327-8 Zahra Amirsardari , Akram Dourani , Mohamad Ali Amirifar , Nooredin Ghadiri Massoom , Rahim Ehsani
Abstract
In the present paper, an experimental study of the catalytic decomposition of hydrous hydrazine was investigated on the different structural forms of the catalyst. The synthesized iridium catalysts have been usually used directly and have not been evaluated in the laboratory reactor. This study includes the preparation of iridium-based catalysts supported on spherical (alumina), honeycomb monoliths (cordierite) and foams (alumina) for the evaluation of catalytic activity in the laboratory reactor. The characterizations of these catalysts were evaluated by the TGA, FESEM and BET analysis. The result of the catalytic characterization of monolithic support was shown a homogeneous distribution of active metal without any problem of sintering (average size 25 nm) on the support surface. While the surface of the spherical and foam supports were shown non-uniform distribution of nanoparticles on the support skeleton (average size 55 nm). The monolithic catalyst exhibits higher decomposition rate and H2 selectivity than other supports due to uniform in shape and particle size distribution.Graphic abstract
中文翻译:
开发用于特殊催化床的新型负载型铱纳米催化剂