Abstract: A method is provided that can produce lithium sulfide with high purity. The method for producing lithium sulfide includes: a first step of reducing a raw material containing lithium (Li) and sulfur (S) elements, using a reductant containing a carbon (C) element, thereby obtaining an intermediate; and a second step of reducing the intermediate using a reducing gas, thereby obtaining lithium sulfide. It is preferable that the first step is performed in an inert gas atmosphere. It is also preferable that the first step is performed at a temperature of from 700° C. to 850° C. It is also preferable that the second step is performed at a temperature of from 830° C. to 930° C.

Abstract: The present invention provides an exhaust gas purifying catalyst including a first catalyst layer (12). The first catalyst layer (12) includes a first section (14) and a second section (15) in an exhaust gas flow direction, the first section (14) being located on an upstream side in the exhaust gas flow direction relative to the second section (15). The first section (14) and the second section (15) both contain a catalytically active component including a specific element. A concentration of the specific element is higher in the first section (14) than in the second section (15). A concentration gradient of the specific element contained in the first section (14) in a thickness direction of the catalyst layer (12) is milder than a concentration gradient of the specific element contained in the second section (15) in the thickness direction.

Abstract: An object of the present invention is to provide a powder of a CeO2—ZrO2-based complex oxide which enables to achieve an improvement in the purification performance at a low to middle temperature of an exhaust gas purification catalyst, and, in order to achieve the above-mentioned object, the present invention provides a powder of a CeO2—ZrO2-based complex oxide, wherein a pore volume with from-10-to-100-nm diameters after a heat treatment performed at 1,000° C. for 3 hours in an air atmosphere, is 0.35 mL/g or more, and wherein an amount of carbon dioxide desorbed after the heat treatment, as measured by a temperature programmed desorption method, is 80 ?mol/g or more.

Abstract: A nitrogen oxide storage material comprising: Mg1-yAl2O4-y, wherein y is a number satisfying 0?y?0.2, a noble metal, an oxide of a metal other than the noble metal, and a barium compound, the noble metal, the oxide, and the barium compound being loaded on Mg1-yAl2O4-y. The metal oxide comprises at least one metal oxide selected from zirconium oxide, praseodymium oxide, niobium oxide, and iron oxide.

Abstract: The present invention provides an exhaust gas purifying catalyst including a first catalyst layer (12). The first catalyst layer (12) includes a first section (14) and a second section (15) in an exhaust gas flow direction, the first section (14) being located on an upstream side in the exhaust gas flow direction relative to the second section (15). The first section (14) and the second section (15) both contain a catalytically active component including a specific element. A concentration of the specific element is higher in the first section (14) than in the second section (15). A concentration gradient of the specific element contained in the first section (14) in a thickness direction of the catalyst layer (12) is milder than a concentration gradient of the specific element contained in the second section (15) in the thickness direction.

Abstract: A nitrogen oxide storage material comprising: Mg1?yAl2O4?y, wherein y is a number satisfying 0?y?0.2, a noble metal, an oxide of a metal other than the noble metal, and a barium compound, the noble metal, the oxide, and the barium compound being loaded on Mg1?yAl2O4?y. The metal oxide comprises at least one metal oxide selected from zirconium oxide, praseodymium oxide, niobium oxide, and iron oxide.

Abstract: Proposed is a phosphor capable of effectively inhibiting the occurrence of adverse influence of a sulfur-based gas while improving water resistance of the phosphor and effectively inhibiting the corrosion of a metallic member. A phosphor is proposed, which includes particles or a layer provided on the surface of a sulfur-containing phosphor, which contains sulfur in a host material, and containing a crystalline metal borate containing an IIA-Group element, boron, and oxygen.

Abstract: Proposed is a phosphor capable of effectively inhibiting the occurrence of adverse influence of a sulfur-based gas while improving water resistance of the phosphor and effectively inhibiting the corrosion of a metallic member. A phosphor is proposed, which includes particles or a layer provided on the surface of a sulfur-containing phosphor, which contains sulfur in a host material, and containing a crystalline metal borate containing an IIA-Group element, boron, and oxygen.

Abstract: Provided is a novel CaS-based phosphor with which chemical reactions can be inhibited even if said CaS-based phosphor is heated with a heterogeneous material. This phosphor includes: a crystalline parent material represented by the composition formula Ca1-xSrxS.yZnO (in the formula, 0?x<1, 0<y?0.5); and a luminescent center.

Abstract: Provided is a novel coated phosphor capable of effectively suppressing the adverse effects of hydrogen sulfide gas generated by the reaction between a sulfur-containing phosphor and moisture in the air. Provided is a sulfur-containing phosphor having a configuration in which ZnO compound containing Zn and O is present on the surface of a sulfur-containing phosphor having a host material which includes sulfur.

Abstract: A highly reliable light-emitting device is provided, which is capable of effectively suppressing detrimental effects of sulfuric gas. A light-emitting device comprising a solid light-emitting element 1, a metal member 2 reacting with sulfuric gas and a phosphor-containing layer 5 that contains a phosphor 3, the phosphor-containing layer 5 containing a sulfuric gas-adsorbing substance 4 that adsorbs sulfuric gas, and, when the phosphor-containing layer 5 is tripartitioned from the side near the metal member to far into a proximal layer portion, an intermediate layer portion and an outer layer portion, the concentration of sulfuric gas-adsorbing substance 4 in the proximal layer portion is made to be higher than those for the intermediate layer portion and the outer layer portion.

Abstract: Provided is a novel CaS-based phosphor with which chemical reactions can be inhibited even if said CaS-based phosphor is heated with a heterogeneous material. This phosphor includes: a crystalline parent material represented by the composition formula Ca1-xSrxS.yZnO (in the formula, 0?x<1, 0<y?0.5); and a luminescent center.

Abstract: Provided is a novel coated phosphor capable of effectively suppressing the adverse effects of hydrogen sulfide gas generated by the reaction between a sulfur-containing phosphor and moisture in the air. Provided is a sulfur-containing phosphor having a configuration in which ZnO compound containing Zn and O is present on the surface of a sulfur-containing phosphor having a host material which includes sulfur.

Abstract: In order to provide a novel CaS:Eu series red phosphor in which moisture-resistance has been improved, a red phosphor is proposed, containing Ba at 0.001 to 1.00 mol % with respect to CaS in a red phosphor represented by the general formula: CaS:Eu.

Abstract: A highly reliable light-emitting device is provided, which is capable of effectively suppressing detrimental effects of sulfuric gas. A light-emitting device comprising a solid light-emitting element 1, a metal member 2 reacting with sulfuric gas and a phosphor-containing layer 5 that contains a phosphor 3, the phosphor-containing layer 5 containing a sulfuric gas-adsorbing substance 4 that adsorbs sulfuric gas, and, when the phosphor-containing layer 5 is tripartitioned from the side near the metal member to far into a proximal layer portion, an intermediate layer portion and an outer layer portion, the concentration of sulfuric gas-adsorbing substance 4 in the proximal layer portion is made to be higher than those for the intermediate layer portion and the outer layer portion.

Abstract: Provided is a novel coated phosphor capable of effectively suppressing the adverse effects of hydrogen sulfide gas generated by the reaction between a sulfur-containing phosphor and moisture in the air. Provided is a sulfur-containing phosphor having a configuration in which ZnO compound containing Zn and O is present on the surface of a sulfur-containing phosphor having a host material which includes sulfur.

Abstract: An image display device comprises a front surface substrate equipped with a phosphor screen including a phosphor layer and a light shielding layer, and a metal back layer provided by an anode electrode for allowing electrons to collide against the phosphor layer so as to excite the phosphor layer, and a rear surface substrate arranged to face the front surface substrate and having electron releasing elements arranged thereon for allowing electrons to be released toward the phosphor screen. The image display device is characterized in that an anode power supply terminal and an anode power supply wiring connected to the metal back layer are formed on the front surface substrate, the anode power supply wiring is formed closer to the front surface substrate than the metal back layer, and the anode power supply wring is connected to the metal back layer via a resistance material layer.

Abstract: A metal back layer forming device including a film withdrawing roller for withdrawing, starting at one end, a transfer film from the wound body of the transfer film formed by applying at least a metal film onto a base film, a film carrying mechanism such as a turn roller for carrying the transfer film withdrawn from the wound body to the downstream side, a transfer roller for transferring the metal film by heating while pressing the carried transfer film against a phosphor screen installed on a face plate, and a film winding roller for winding while releasing the base film from the transfer film which completes transfer treatment.

Abstract: A phosphor particle includes a phosphor containing zinc sulfide as a base material, and a coating layer applied on the phosphor and made of a magnesium phosphate expressed by Mg3(PO4)2.

Abstract: Disclosed is a method for forming a metal back-attached phosphor screen, the method comprising the steps of: forming a phosphor layer (10) on an inner surface of a face plate (8); disposing a transfer film (1) in which at least a release agent layer (3), a smooth resin film (4) and an adhesive agent layer (5) are formed on a basefilm (2) onto the phosphor layer (10) pressing the transfer film (1) while applying heat by a transfer roller (7) to bond the transfer film (1), to thereby transfer the resin film; forming a metal film on the transferred resin film; and heating the face plate in which the metal film is formed.