摘要:
A nitrogen oxide removing catalyst has a porous material having fine holes with controlled diameters and a catalyst having an active ingredient supported in the fine holes are used. In one instance, the diameter of the plurality of fine holes is within a range of 8-9 Å. The fine hole diameter is preferably from 8-9 Å when the diameter is measured in a gas adsorption method in which fine holes with diameters of 3.4-14 Å can be measured. The fine hole diameter is also preferably from 8-9 Å when the fine hole diameter is calculated from a crystal structure. In another instance, the porous material is mesoporous silica. The primary particle diameter of the mesoporous silica is preferably within a range of 150-300 nm. The nitrogen oxide removing catalyst having superior durability and a method of removing nitrogen oxides are also provided.
摘要:
This invention provides a method involving the use of a non-ammonia-based deNOx catalyst for reducing the amount of NOx in exhaust combustion gas discharged from a boiler and an internal-combustion engine, wherein NOx and CO contained in exhaust gas are allowed to selectively react to reduce and remove NOx. This method involves the use of a catalyst comprising a cerium-zirconium composite oxide with Au supported thereon or a catalyst comprising a cerium-oxide-containing porous carrier with zirconium and Au supported thereon. Use of such catalyst enables purification of NOx and CO in exhaust gas and also enables generation of hydrogen.
摘要:
This invention relates to a quinoline compound of the formula: ##STR1## wherein R.sup.1 is a pyridyl group or aryl, each of which may be substituted with suitable substituent(s),A is --COHN-- or --NHCO--,n is an integer of 0 or 1, and ##STR2## is a group of the formula: ##STR3## In which R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are as defined,and pharmaceutically acceptable salt thereof, to processes for preparation thereof, to a pharmaceutical composition comprising the same, and to a method for the prevention and/or the treatment of bone diseases caused by abnormal bone metabolism in human being or animals.
摘要:
An image forming apparatus provided with a contact charging device, in which an electrically conductive member contacts a surface of an electrostatic latent image carrier for charging the surface, wherein at least impurity atom selected from the group consisting of elements of Group IA, II, VI and VII of the periodic table is adhered to the electrically conductive member, and a total content of the impurity atom is in a range from 0.05 wt % to 0.45 wt% with respect to all atoms including the impurity atom and atoms forming the electrically conductive member.
摘要:
This invention provides a method involving the use of a non-ammonia-based deNOx catalyst for reducing the amount of NOx in exhaust combustion gas discharged from a boiler and an internal-combustion engine, wherein NOx and CO contained in exhaust gas are allowed to selectively react to reduce and remove NOx. This method involves the use of a catalyst comprising a cerium-zirconium composite oxide with Au supported thereon or a catalyst comprising a cerium-oxide-containing porous carrier with zirconium and Au supported thereon. Use of such catalyst enables purification of NOx and CO in exhaust gas and also enables generation of hydrogen.
摘要:
A staple fiber non-woven fabric is provided which comprises, as constituent fibers, first and second split staple fibers composed of first and second fiber formable polymers, respectively, and water-absorptive staple fibers. The first and second split staple fibers have a fineness of not greater than 0.5 denier per fiber. The first and second fiber formable polymers are different polymers selected from the group consisting of a polyamide, a polyester and a polyethylene which are incompatible with each other. The fiber split degree of the first and second split staple fibers is not lower than 85%. The constituent fibers are three-dimensionally entangled with each other.
摘要:
It is prepared to be an elastic net which is elastic in the cross machine direction and non-elastic in the machine direction. A combined sheet is obtained by joining the net and a filamentous web. The filamentous web comprises of drawn thermoplastic continuous filaments which are oriented in a machine direction. A laminated web is obtained by laying a fibrous web of staple fibers on the combined sheet. A high-pressure liquid flow is applied to the laminated web. The staple fibers are entangled among, and with the net. A method for producing a pressure-sensitive adhesive tape or sheet.
摘要:
A porous material having fine holes with controlled diameters and a catalyst having an active ingredient supported in the fine holes in the porous material are used. According to a first embodiment of the invention, the diameter of the plurality of fine holes is within a range of 8 to 9 Å. The fine hole diameter is preferably from 8 to 9 Å when the diameter is measured in a gas adsorption method in which fine holes with diameters of 3.4 to 14 Å can be measured. The fine hole diameter is also preferably from 8 to 9 Å when the fine hole diameter is calculated from a crystal structure. According to a second embodiment of the invention, the porous material is mesoporous silica. The primary particle diameter of the mesoporous silica is preferably within a range of 150 to 300 nm.