Gold clusters and small nanoparticles supported on metal oxides could be prepared by deposition‐precipitation followed by microwave irradiation as a drying method and then calcination.The drying method influenced the...Gold clusters and small nanoparticles supported on metal oxides could be prepared by deposition‐precipitation followed by microwave irradiation as a drying method and then calcination.The drying method influenced the size of the Au particles.Au(III)was partly reduced during conventional oven drying,resulting in Au aggregates.In contrast,Au(III)was preserved during microwave drying owing to rapid and uniform heating,and the Au diameter was minimized to1.4nm on Al2O3.This method can be applied to several metal oxide supports having different microwave absorption efficiencies,such as MnO2,Al2O3,and TiO2.These catalysts exhibited higher catalytic activities for CO oxidation at low temperature and for selective aerobic oxidation of sulfide than those prepared by conventional methods.展开更多
Robots aimed at assisting humans have contradicting requirements regarding safety and work ability.These systems have many tasks and require the manipulators of the system to apply a wide torque range from low to high...Robots aimed at assisting humans have contradicting requirements regarding safety and work ability.These systems have many tasks and require the manipulators of the system to apply a wide torque range from low to high.The problem with high torque capable manipulators is that.They are not safe to use around humans.Therefore,the work ability of the system cannot be kept higu while being safe in general.To cope with both of these contradicting points,展开更多
基金supported by JSPS KAKENHI Grant Numbers JP26810098 and JP16K17943~~
文摘Gold clusters and small nanoparticles supported on metal oxides could be prepared by deposition‐precipitation followed by microwave irradiation as a drying method and then calcination.The drying method influenced the size of the Au particles.Au(III)was partly reduced during conventional oven drying,resulting in Au aggregates.In contrast,Au(III)was preserved during microwave drying owing to rapid and uniform heating,and the Au diameter was minimized to1.4nm on Al2O3.This method can be applied to several metal oxide supports having different microwave absorption efficiencies,such as MnO2,Al2O3,and TiO2.These catalysts exhibited higher catalytic activities for CO oxidation at low temperature and for selective aerobic oxidation of sulfide than those prepared by conventional methods.
文摘Robots aimed at assisting humans have contradicting requirements regarding safety and work ability.These systems have many tasks and require the manipulators of the system to apply a wide torque range from low to high.The problem with high torque capable manipulators is that.They are not safe to use around humans.Therefore,the work ability of the system cannot be kept higu while being safe in general.To cope with both of these contradicting points,
