Abstract
An environmentally friendly (“green”), H2-generation system was developed that involved hydrolytic oxidation of inexpensive organosilanes as hydrogen storage materials with newly developed heterogeneous gold nanoparticle catalysts. The gold catalyst functioned well at ambient temperature under aerobic conditions, providing efficient production of pure H2. The newly developed size-selective gold nanoparticle catalysts could be separated easily from the reaction mixture containing organosilanes, allowing an on/off-switchable H2-production by the introduction and removal of the catalyst. This is the first report of an on/off-switchable H2-production system employing hydrolytic oxidation of inexpensive organosilanes without requiring additional energy.
Highlights
Hydrogen (H2) is one of the most promising energy carrier alternatives to fossil fuels
Several heterogeneous catalysts for the hydrolytic oxidation of organosilanes have been reported[28,29,30,31,32,33,34,35,36,37]. These catalysts were developed for the synthesis of organosilanols, and no attention has been paid for the utilization of heterogeneous catalysts for H2-production through hydrolytic oxidation of inexpensive organosilanes such as PMHS and TMDS
The present report describes the development of an efficient controllable H2-production system using hydrolytic oxidation of organosilanes with newly developed heterogeneous gold nanoparticle (AuNP) catalysts at ambient temperature under aerobic conditions
Summary
Takato Mitsudome[1], Teppei Urayama[1], Taizo Kiyohiro[1], Zen Maeno[1], Tomoo Mizugaki[1], Koichiro Jitsukawa1 & Kiyotomi Kaneda[1,2]. The newly developed sizeselective gold nanoparticle catalysts could be separated from the reaction mixture containing organosilanes, allowing an on/off-switchable H2-production by the introduction and removal of the catalyst This is the first report of an on/off-switchable H2-production system employing hydrolytic oxidation of inexpensive organosilanes without requiring additional energy. The efforts to develop efficient and convenient H2-generation systems have led to investigations into hydrogen storage materials such as metal hydrides and chemical hydrides Metal hydrides, such as LiAlH4 and AlH3, react violently when they contact water at ambient temperature, providing the rapid production of large amounts of pure H21–3. The present report describes the development of an efficient controllable H2-production system using hydrolytic oxidation of organosilanes with newly developed heterogeneous gold nanoparticle (AuNP) catalysts at ambient temperature under aerobic conditions. The AuNP catalysts were reusable without loss of activity as demonstrated during recycling experiments
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