Abstract: A first electrode structural body includes a plurality of electrode pairs. Of a plurality of electrodes forming the plurality of electrode pairs, at least one electrode forms a common electrode common to the plurality of electrode pairs.

Abstract: There is disclosed a catalytic body with purifying efficiency and smaller pressure loss and its manufacturing method. Provided is a catalytic body wherein a porous honeycomb structure including partition walls defining a plurality of cells acting as fluid passages which extend through the honeycomb structure from one end surface to the other end surface thereof is formed of at least one type of (a) a catalytic substance and (b) a substance including an oxide and at least one type of noble metal carried on the oxide. The catalytic converter is characterized in that (c) 10% or more of a plurality of cells are plugged by plugging parts formed at one ends or in the middles of passages, that (d) the average pore diameter of the honeycomb structure is 10 ?m or more, or that (e) the porosity is 40% or more.

Abstract: A honeycomb structure excellent in thermal dispersibility upon heating and being protected from damage due to thermal stress, and an efficient method for manufacturing the honeycomb structure. The structure is provided with porous partition walls, functioning as a filtration layer, through which exhaust gas flowing into the cells can flow out, and plugging portions. Additional plugging portions are further disposed in the open end portions to which the plugging portions are not disposed (unplugged open end portions) not so as to plug unplugged open end portions. Each cross-sectional shape of additional plugging portions in a direction perpendicular to the axial direction forms a predetermined pattern shape as a whole, and a barycenter of the pattern shape is located in almost the center of a cross section of a flow of the exhaust gas in a direction perpendicular to the axial direction.

Abstract: There is disclosed a catalytic body with purifying efficiency and smaller pressure loss and its manufacturing method. Provided is a catalytic body wherein a porous honeycomb structure including partition walls defining a plurality of cells acting as fluid passages which extend through the honeycomb structure from one end surface to the other end surface thereof is formed of at least one type of (a) a catalytic substance and (b) a substance including an oxide and at least one type of noble metal carried on the oxide. The catalytic converter is characterized in that (c) 10% or more of a plurality of cells are plugged by plugging parts formed at one ends or in the middles of passages, that (d) the average pore diameter of the honeycomb structure is 10 ?m or more, or that (e) the porosity is 40% or more.

Abstract: There are disclosed a honeycomb catalytic body to which a wall flow structure is applied so that a fluid such as an exhaust gas passes through a partition wall twice or more, and a honeycomb structure for use as a catalyst carrier of the honeycomb catalytic body in which a pore characteristic and the like are appropriately adjusted as the catalytic body. In a honeycomb structure 11 including porous partition walls 4 arranged so as to form a plurality of cells 3 which communicate between two end surfaces of the honeycomb structure and having a large number of pores; and plugging portions 10 arranged so as to plug at least a part of the plurality of cells 3 at any position in a length direction of the cells, an average maximum image distance of the partition walls is larger than 40 ?m, and the plugging portions 10 are arranged so that at least a part of a fluid which has entered the cells from one end surface passes through the partition wall 4 twice or more, and is then discharged from the other end portion.

Abstract: A ceramic rotary heat exchanger including a plurality of matrix segments, made of ceramics and having a honeycomb structure, being connected with each other by using an adhesion member in a disk shape, and a plurality of pins arranged at an outer peripheral portion. In addition, the invention is a method of manufacturing the heat exchanger mentioned above, wherein the matrix segments are not positioned at connecting portions between respective matrix segments.

Abstract: A rotary regenerative heat exchanging ceramic body including a plurality of matrix segments. The matrix segments of ceramic honeycomb structures are joined by a bonding material into the rotary regenerative heat exchanging ceramic body in the form of a disk. Each the matrix segments includes cells whose shapes have anisotropy in Young's modulus in sectional planes perpendicular to through-apertures. The matrix segments are arranged so that directions in which the Young's moduli of the segments are smaller are substantially coincident with circumferential directions of the disk at least at four locations near an outer circumference of the disk.