摘要:
A thin film electro-luminescence composition comprising an alkaline earth metal thiogallate represented by the following compositional formula: ##EQU1## wherein M.sup.1 is Sr or Ba; RE is a lanthanoid element; a and b are integers which are different from each other; and wherein x is 0.001 to 0.1 with the proviso that ##EQU2## is excluded or comprising an alkaline earth metal thioaluminate represented by the following compositional formula: ##EQU3## wherein M.sup.2 is Ca, Sr or Ba; RE is a lanthanoid element; c and d are integers which may be different from each other; and wherein y is 0.001 to 0.1,and a thin film electro-luminescence device comprising said thin film electro-luminescence composition as a luminescence layer.
摘要:
Fluorine-doped tin oxide particles having a structure characterized by peaks at at least 123±5 cm−1, 139±5 cm−1, and 170±5 cm−1 in Raman spectroscopy. The particles preferably have additional Raman spectral peaks at 78±5 cm−1, 97±5 cm−1, 109±5 cm−1, 186±5 cm−1, and 207±5 cm−1. The particles preferably have a specific surface area of 10 to 300 m2/g.
摘要:
An object of the present invention is to provide a niobium monoxide able to realize large capacitance in a miniature sized capacitor. The invention relates to a niobium monoxide having a porous structure comprising particles, characterized in that the niobium monoxide has a full-width at half maximum of an X-ray diffraction peak corresponding to a (111) plane or an X-ray diffraction peak corresponding to a (200) plane of 0.21° to 1.0°. The niobium monoxide has a large specific surface area and porosity, and is especially suitable for use in a capacitor.
摘要:
Provided is a particulate combustion catalyst including a carrier formed of monoclinic zirconium oxide particles, and metallic Ag or Ag oxide, which serves as a catalyst component and is supported on the carrier, wherein the amount of the catalyst component is 0.5 to 10 mass %, as reduced to metallic Ag, on the basis of the mass of the carrier, and preferably, the catalyst has a BET specific surface area of 8 to 21 m2/g. Also provided are a particulate filter coated with the particulate combustion catalyst; and an exhaust gas cleaning apparatus including a particulate filter coated with the particulate combustion catalyst.
摘要:
A co-catalyst for purifying an exhaust gas which can be used for a loner period of time as an actual catalyst by using the cerium oxide in the conventional co-catalyst for purifying the exhaust gas as a cerium-containing complex oxide for elevating the resistance to heat and suppressing the performance reduction due to thermal deterioration and by making a specific surface area and an oxygen storage capacity over specified values. A co-catalyst for purifying an exhaust gas of the present invention includes a composite oxide including (a) cerium; and (b) at least one element selected from the group consisting of zirconium, yttrium, strontium, barium and a rare-earth element supported on a particulate aluminum oxide support; a specific surface area of the co-catalyst after sintering being not less than 40 m2/g; an oxygen storage capacity at 400° C. being not less than 10 &mgr;mols/g and an oxygen storage capacity at 700° C. being not less than 100 &mgr;mols/g.
摘要:
A chlorine-doped tin oxide particle exhibits peaks at at least 108±5 cm−1, 122±5 cm−1, and 133±5 cm−1 in Raman spectroscopy. The chlorine-doped tin oxide particle preferably has an additional Raman spectral peak at 337±10 cm−1. The chlorine-doped tin oxide particle preferably has a specific surface area of 10 to 300 m2/g. The chlorine-doped tin oxide particle preferably has an average primary particle size of 3 to 200 nm. The chlorine-doped tin oxide particle is preferably substantially free of oxygen deficiency.
摘要:
A manganese oxide particle having a hexagonal crystal structure or an analogous hexagonal crystal structure with an a-axis length of 8.73±1 Å and a c-axis length of 14.86±1 Å. The manganese oxide particle is preferably produced by a process including mixing an aqueous solution containing manganese (II) and an organic compound having a hydroxyl group while in a heated state with an alkali.
摘要:
A p-type thermoelectric material is prepared by mixing and melting at least two members selected from bismuth, tellurium, selenium, antimony, and sulfur to obtain an alloy ingot; grinding the alloy ingot to obtain powder of the allow mass; and hot pressing the powder. At least the hot pressing is carried out in the presence of any one of hexane and solvents represented by CnH2n+1OH or CnH2n+2CO (where n is 1, 2 or 3). A dopant may be used at the step of mixing.
摘要:
A manganese oxide particle having a hexagonal crystal structure or an analogous hexagonal crystal structure with an a-axis length of 8.73±1 Å and a c-axis length of 14.86±1 Å. The manganese oxide particle is preferably produced by a process including mixing an aqueous solution containing manganese (II) and an organic compound having a hydroxyl group while in a heated state with an alkali.
摘要:
A tin oxide particle having a structure characterized by peaks in Raman spectroscopy at at least 37±9 cm−1, 57±9 cm−1, 97±9 cm−1, 142±9 cm−1, 205±9 cm−1, 255±9 cm−1. The tin oxide particle preferably has an infrared transmittance of 80% or less at a wavelength of 1500 nm. The tin oxide particle preferably exhibits electroconductivity. The tin oxide particle is preferably substantially free from a dopant element that develops electroconductivity.