催化作用
铱
纳米材料基催化剂
材料科学
堇青石
化学工程
烧结
分解
联氨(抗抑郁剂)
纳米颗粒
选择性
催化剂载体
粒径
纳米技术
金属
复合材料
陶瓷
化学
冶金
有机化学
色谱法
工程类
作者
Zahra Amirsardari,Akram Dourani,Mohamad Ali Amirifar,Nooredin Ghadiri Massoom,Rahim Ehsani
出处
期刊:journal of nanostructure in chemistry
日期:2019-12-26
卷期号:10 (1): 47-53
被引量:11
标识
DOI:10.1007/s40097-019-00327-8
摘要
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 H 2 selectivity than other supports due to uniform in shape and particle size distribution. Graphic abstract
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