Nanocrystalline transition metals were prepared with Ar+H-2 are plasma method. The hydrogen must be used during preparation to get a special nano-particles. The hydrogen plays an important role in the structure and st...Nanocrystalline transition metals were prepared with Ar+H-2 are plasma method. The hydrogen must be used during preparation to get a special nano-particles. The hydrogen plays an important role in the structure and state of nanocrystalline transition metals. The state of hydrogen and the change of the nanocrystalline metal structure caused by hydrogen are called the behaviour of hydrogen in nano-transition metals which includes the ability and function of storing hydrogen in the metals.展开更多
Nanostructured NiPdCe particles by are plasma method in Ar+H-2 atmosphere were characterized by TEM, HRTEM and XRD. The results show that nanostructured NiPdCe particles possess the special structure consisting of the...Nanostructured NiPdCe particles by are plasma method in Ar+H-2 atmosphere were characterized by TEM, HRTEM and XRD. The results show that nanostructured NiPdCe particles possess the special structure consisting of the thin-shell layer composed of a series of CeNi phases, Pd and CeO2 and the core composed of Ni and Pd. The thickness of the shell layer is 2 similar to 3 nm. The reactivity of nano-NiPdCe particles was measured in the gas-phase hydrogenation of toluene. The results show that nano-NiPdCe particles possess high reactivity above 325 degrees C and the product selectivity is 100%. The reactivity of nano-NiPdCe particles depends on the synergistic effects of CeNi phases, Ni and Pd as well as the hydrogen storage property.展开更多
VARIOUS small inorganic solid grain catalysts, alloys and films consisting of various nano-size particles were prepared by chemical methods. The study of catalytic properties of nanostructured materials integrated mat...VARIOUS small inorganic solid grain catalysts, alloys and films consisting of various nano-size particles were prepared by chemical methods. The study of catalytic properties of nanostructured materials integrated material physics with chemistry, which promoted the development of materials science.展开更多
文摘Nanocrystalline transition metals were prepared with Ar+H-2 are plasma method. The hydrogen must be used during preparation to get a special nano-particles. The hydrogen plays an important role in the structure and state of nanocrystalline transition metals. The state of hydrogen and the change of the nanocrystalline metal structure caused by hydrogen are called the behaviour of hydrogen in nano-transition metals which includes the ability and function of storing hydrogen in the metals.
文摘Nanostructured NiPdCe particles by are plasma method in Ar+H-2 atmosphere were characterized by TEM, HRTEM and XRD. The results show that nanostructured NiPdCe particles possess the special structure consisting of the thin-shell layer composed of a series of CeNi phases, Pd and CeO2 and the core composed of Ni and Pd. The thickness of the shell layer is 2 similar to 3 nm. The reactivity of nano-NiPdCe particles was measured in the gas-phase hydrogenation of toluene. The results show that nano-NiPdCe particles possess high reactivity above 325 degrees C and the product selectivity is 100%. The reactivity of nano-NiPdCe particles depends on the synergistic effects of CeNi phases, Ni and Pd as well as the hydrogen storage property.
文摘VARIOUS small inorganic solid grain catalysts, alloys and films consisting of various nano-size particles were prepared by chemical methods. The study of catalytic properties of nanostructured materials integrated material physics with chemistry, which promoted the development of materials science.
