摘要:
A lithium secondary battery with a large capacity and a long cycle life is disclosed. This lithium secondary battery includes a case, a negative electrode accommodated in the case and containing a polymeric material which has been formed by heat-treating a polymer having a perynaphthalene structure as a main repeating unit in a non-oxidizing atmosphere at 500.degree. to 1000.degree. C. and which absorbs and desorbs lithium ions, a positive electrode accommodated in the case and so arranged as to oppose the negative electrode with a separator sandwiched between them, and a nonaqueous electrolyte contained in the case.
摘要:
An electrode catalyst that maintains catalytic activity under conditions of an electrode potential as high as 0.4 V or above and exhibits improved stability. The metal oxynitride electrode catalyst is composed of an oxynitride containing at least one transition metal element selected from the group consisting of La, Ta, Nb, Ti, and Zr, the metal oxynitride electrode catalyst being used at a potential of 0.4 V or higher relative to the reversible hydrogen electrode potential in an acidic electrolyte. The metal oxynitride electrode catalyst is useful as an electrode catalyst for electrochemical systems used in acidic electrolytes in the fields of water electrolysis, organic electrolysis, fuel cells, etc.
摘要:
A carbon-based solid acid which has high activity and high thermal stability and is useful as an acid catalyst for various reactions such as hydration of olefins.The carbon-based solid acid for use as a catalyst is obtained by carbonization and sulfonation of an organic substance, which has a reduction rate of 10 mol % or less of acid content as measured by immersing the solid acid in hot water at 120° C. for 2 hours, is used as the acid catalyst.The organic substance to be used as the raw material for preparing the solid acid is preferably a saccharide having β1-4 glycosidic bond (e.g. cellulose) or lignin. Amylose is also suitable as the raw material. Examples of the reaction for which the solid catalyst can be used include hydration of olefins, etherification of olefins, and acid/alcohol esterification.
摘要:
A composite solid strong acid comprising, a solid acid and a carbon material, wherein said solid acid is obtained by heat treating of polycyclic aromatic hydrocarbons or polycyclic aromatic hydrocarbons to which the carbon material is blended in concentrated sulfuric acid or fuming sulfuric acid, transforming said polycyclic aromatic hydrocarbons to a solid acid which is insoluble in a polar solvent by condensation and sulfonation further compositing with said carbon material.
摘要:
A photo-catalyst containing titanium fluoride nitride comprising, Ti(IV)OaNbFc or a compound represented by MeTi(IV)OaNbFc prepared by doping at least one metal Me selected from the group consisting of alkali or alkaline earth metals on Ti(IV)OaNbFc. (wherein, b is 0.1 to 1, c is 0.1 to 1 and a is a value to maintain Ti(IV) and is decided in relation to b and c.). The photo-catalyst containing titanium fluoride nitride is especially characterized by loading at least one promoter selected from the group consisting of Pt, Ni and Pd.
摘要翻译:包含Ti(IV)O N a N b C c C或由MeTi(IV)表示的化合物)的含氟化钛的光催化剂, 通过在Ti(IV)上掺杂选自由碱金属或碱土金属组成的组中的至少一种金属Me而制备的N a C b 其中,C 1,C 2,C 3,C 3, (其中,b为0.1〜1,c为0.1〜1,a为保持Ti(IV)的值,并且相对于b和c决定)。 含有氟化钛的光催化剂的特征在于加载至少一种选自Pt,Ni和Pd的助催化剂。
摘要:
A sulfonic acid group-containing carbonaceous material that is useful as a solid acid catalyst for various reactions such as hydration of olefins and acidolysis reaction of hydroperoxide and also useful as a proton conductor material having excellent proton conductivity is provided. In addition, an economical and environmentally friendly method for producing methyl ethyl ketone is provided. A sulfonic acid group-containing carbonaceous material having high catalytic activities for various acid catalyst reactions and also having high proton conductivity can be obtained by carbonization and sulfonation of a phenolic resin.
摘要:
A solid-acid-catalyzed saccharification device (A) includes a catalytic reaction vessel (3) configured to contain a polysaccharide feedstock with water and a solid-acid catalyst (X2) as a liquid mixture (X3) to monosaccharify the polysaccharide using the solid-acid catalyst (X2), an agitation device (4) configured to agitate the liquid mixture (X3) in the catalytic reaction vessel (3), an oxidation-reduction electrometer (5) configured to measure the redox potential of the liquid mixture (X3) in the catalytic reaction vessel (3), and a pH meter (6) configured to measure the pH of the liquid mixture (X3) in the catalytic reaction vessel (3). According to the solid-acid-catalyzed saccharification device (A), it is possible to accurately follow the reaction state of a saccharification process of a feedstock using a solid acid catalyst.
摘要:
It is an object of the present invention to provide a novel sterilization method capable of killing not only microorganisms in water, but also microorganisms in a gas. Specifically, the present invention provide a method for sterilizing a gas or liquid, comprising contacting a microorganism in a gas or liquid with a material containing an amorphous carbon having a sulfo group introduced therein.
摘要:
The present invention provides a method for producing a fatty acid monoester product by reacting an animal oil and/or a vegetable oil with an alcohol in the presence of a sulfonic acid group-introduced amorphous carbon catalyst and water. By this method, the production of a fatty acid monoglyceride, which is difficult to separate from the fatty acid monoester, can be suppressed, and the fatty acid monoester can be efficiently produced.Also, the present invention provides a method for producing a fatty acid monoester product by performing the transesterification reaction of an animal oil and/or a vegetable oil with an alcohol, or the esterification reaction of a fatty acid with an alcohol, in the presence of a sulfonic acid group-introduced amorphous carbon catalyst washed with water. By this method, the life of the catalyst can be extended, and the production cost can be reduced.