公开(公告)号：US20120129689A1

公开(公告)日：2012-05-24

申请号：US13299833

申请日：2011-11-18

申请人： Takeshi YOSHII ,  Tomohiko Nakanishi

发明人： Takeshi YOSHII ,  Tomohiko Nakanishi

IPC分类号： B01J37/08 ,  C01F17/00 ,  C01B13/14

CPC分类号： C01B13/185 ,  B01J23/002 ,  B01J23/83 ,  B01J23/8892 ,  B01J35/1009 ,  B01J35/1014 ,  B01J35/1038 ,  B01J37/22 ,  B01J37/24 ,  C01B13/14 ,  C01G45/1264 ,  C01G49/0054 ,  C01G51/68 ,  C01P2002/34 ,  C01P2002/72 ,  C01P2006/12 ,  C01P2006/14

摘要： A method of manufacturing a perovskite catalyst composed of perovskite oxide includes mixing step, firing step and acid-treating step. In the mixing step, an A-site material and a B-site material are mixed at a stoichiometric ratio such that the A-site is increased, compared to that of a theoretical composition ABO3 of perovskite oxide in which a ratio of A-site and B-site is 1:1. In the firing step, the obtained mixed powder is fired. In the acid-treating step, the obtained fired powder is acid-treated with acid of pH 2 or more and less than pH 7.

摘要翻译： 由钙钛矿氧化物构成的钙钛矿催化剂的制造方法包括混合工序，烧成工序和酸处理工序。 在混合步骤中，与化学计量比相比，A位点材料和B位点材料与A位点的A位点的理论组成ABO3相比，A位点增加， B站点为1：1。 在烧成工序中，烧成所得混合粉末。 在酸处理步骤中，将得到的烧制粉末用pH2以上且小于pH7的酸进行酸处理。

公开(公告)号：US08951932B2

公开(公告)日：2015-02-10

申请号：US13299833

申请日：2011-11-18

申请人： Takeshi Yoshii ,  Tomohiko Nakanishi

发明人： Takeshi Yoshii ,  Tomohiko Nakanishi

IPC分类号： B01J21/00 ,  B01J23/00 ,  B01J25/00 ,  B01J29/00 ,  B01J23/10 ,  C01B13/18 ,  C01B13/14 ,  C01G45/12 ,  C01G49/00 ,  C01G51/00 ,  B01J37/24 ,  B01J23/889 ,  B01J23/83 ,  B01J35/10 ,  B01J37/22

CPC分类号： C01B13/185 ,  B01J23/002 ,  B01J23/83 ,  B01J23/8892 ,  B01J35/1009 ,  B01J35/1014 ,  B01J35/1038 ,  B01J37/22 ,  B01J37/24 ,  C01B13/14 ,  C01G45/1264 ,  C01G49/0054 ,  C01G51/68 ,  C01P2002/34 ,  C01P2002/72 ,  C01P2006/12 ,  C01P2006/14

摘要： A method of manufacturing a perovskite catalyst composed of perovskite oxide includes mixing step, firing step and acid-treating step. In the mixing step, an A-site material and a B-site material are mixed at a stoichiometric ratio such that the A-site is increased, compared to that of a theoretical composition ABO3 of perovskite oxide in which a ratio of A-site and B-site is 1:1. In the firing step, the obtained mixed powder is fired. In the acid-treating step, the obtained fired powder is acid-treated with acid of pH 2 or more and less than pH 7.

摘要翻译： 由钙钛矿氧化物构成的钙钛矿催化剂的制造方法包括混合工序，烧成工序和酸处理工序。 在混合步骤中，与化学计量比相比，A位点材料和B位点材料与A位点的A位点的理论组成ABO3相比，A位点增加， B站点为1：1。 在烧成工序中，烧成所得混合粉末。 在酸处理步骤中，将得到的烧制粉末用pH2以上且小于pH7的酸进行酸处理。

公开(公告)号：US06284188B1

公开(公告)日：2001-09-04

申请号：US09348013

申请日：1999-07-06

申请人： Yosiyasu Andou ,  Kazuhiko Koike ,  Tomohiko Nakanishi

发明人： Yosiyasu Andou ,  Kazuhiko Koike ,  Tomohiko Nakanishi

IPC分类号： C04B35195

CPC分类号： C04B38/0006 ,  C04B35/195 ,  C04B35/632 ,  C04B35/63488

摘要： There is provided a process for obtaining a cordierite honeycomb structural body with thin cell walls and no molding defects such as cell breakage or the like. Cell breakage is prevented by limiting the maximum particle size of the cordierite starting material powder to no greater than 85% of the slit width of the extrusion molding die so that the starting material particles will not clog inside the slits or the introduction port of the slits. As one cordierite starting material, talc with a mean particle size of 5 &mgr;m or greater is used to give a honeycomb structural body with a void volume of greater than 30%, for production of a honeycomb structural body, with good moldability, having a small thickness and a low heat capacity. It is preferred to add to the starting material at least a lubricant/humectant, a binder and/or a mixture of a water-soluble polyhydric alcohol derivative and a polyhydric alcohol.

摘要翻译： 提供了一种获得具有细胞壁的堇青石蜂窝结构体并且没有诸如细胞破裂等的成型缺陷的方法。 通过将堇青石原料粉末的最大粒径限制在挤出成型模具的狭缝宽度的不大于85％的方式防止细胞破裂，使得原料颗粒不会堵塞狭缝或缝隙的引入口 。 作为一种堇青石原料，使用平均粒径为5μm以上的滑石，得到空孔体积大于30％的蜂窝结构体，制造蜂窝结构体，成形性好，成型性小 厚度和低热容量。 优选至少添加润滑剂/保湿剂，粘合剂和/或水溶性多元醇衍生物和多元醇的混合物的原料。

公开(公告)号：US5997984A

公开(公告)日：1999-12-07

申请号：US991244

申请日：1997-12-16

申请人： Kazuhiko Koike ,  Tomohiko Nakanishi ,  Kojiro Tokuda

发明人： Kazuhiko Koike ,  Tomohiko Nakanishi ,  Kojiro Tokuda

IPC分类号： C04B33/04 ,  B01D53/94 ,  B01J21/14 ,  B01J21/16 ,  B01J35/04 ,  C04B35/195 ,  B32B17/00

CPC分类号： C04B38/0009 ,  B01D53/945 ,  B01J21/14 ,  C04B35/195 ,  C04B2111/0081 ,  Y02T10/22 ,  Y10T428/24149 ,  Y10T428/24165

摘要： There are provided thin-walled honeycomb structural bodies with high strength and excellent thermal shock resistance by using as the starting material for cordierite honeycomb structural bodies a combination of talc with a median particle diameter exceeding 7 .mu.m and not greater than 20 .mu.m and with a CaO content of 0.2 wt % or less and another cordierite material such as kaolin with a median particle diameter of not greater than 1 .mu.m, molding the starting material into a honeycomb shape with a cell wall thickness of 130 .mu.m or less, and firing the mold.

摘要翻译： 提供了具有高强度和优异的耐热冲击性的薄壁蜂窝结构体，其用作堇青石蜂窝结构体的起始材料，其中间粒径超过7μm并且不大于20μm的滑石和与 CaO含量为0.2重量％以下，另一种堇青石材料，例如中值粒径不大于1μm的高岭土，将原料成型为泡孔壁厚度为130μm以下的蜂窝状， 点燃模具

公开(公告)号：US07838462B2

公开(公告)日：2010-11-23

申请号：US11340542

申请日：2006-01-27

申请人： Hideki Kita ,  Jayaseelan Daniel Doni ,  Naoki Kondo ,  Shunkichi Ueno ,  Kazuhiko Koike ,  Keiichi Yamada ,  Tomohiko Nakanishi

发明人： Hideki Kita ,  Jayaseelan Daniel Doni ,  Naoki Kondo ,  Shunkichi Ueno ,  Kazuhiko Koike ,  Keiichi Yamada ,  Tomohiko Nakanishi

IPC分类号： B01J23/02 ,  B01J23/00 ,  C04B35/00

CPC分类号： C04B35/195 ,  B01J21/16 ,  B01J35/04 ,  C04B35/6303 ,  C04B38/0006 ,  C04B2111/0081 ,  C04B2235/3213 ,  C04B2235/3218 ,  C04B2235/3229 ,  C04B2235/3272 ,  C04B2235/3409 ,  C04B2235/3418 ,  C04B2235/3445 ,  C04B2235/349 ,  C04B2235/445 ,  C04B2235/5445 ,  C04B2235/72 ,  C04B2235/78 ,  C04B2235/96 ,  C04B2235/9607 ,  C04B38/0009

摘要： A needle-shaped ceramic body having as its base material a cordierite porous body having a high specific surface area and superior thermal shock resistance, and a needle-shaped catalyst-ceramic body are provided.The present invention relates to a needle-shaped ceramic body having as its base material a needle-shaped cordierite in which the tips thereof are rounded, a needle-shaped catalyst-ceramic body loaded with a catalyst, and a method of production of a ceramic body in which a portion of a raw material (fluoride) gasified by a reaction between raw materials is grown into a needle like shape on the metal catalyst (Fe), wherein the tips of needle-shaped particles are rounded, using a vapor-liquid-solid (VLS) reaction, in a raw material burning process.A honeycomb structure composed of the needle-shaped ceramic for supporting a catalyst is provided, in which decreases in specific surface area caused by sintering can be inhibited, and it enables early catalyst activation due to the low thermal capacity, and has low pressure loss.

摘要翻译： 提供具有高比表面积和优异的耐热冲击性的堇青石多孔体作为其基材的针状陶瓷体和针状催化剂陶瓷体。 本发明涉及一种针状陶瓷体，其具有作为其基材的尖端为圆形的针状堇青石，装有催化剂的针状催化剂陶瓷体，以及陶瓷的制造方法 将通过原料之间的反应气化的一部分原料（氟化物）的一部分在金属催化剂（Fe）上生长成针状形状的主体，其中针状颗粒的尖端是圆形的，使用气液 - 固体（VLS）反应，在原料燃烧过程中。 提供了由用于支撑催化剂的针状陶瓷构成的蜂窝结构体，其中可以抑制由烧结引起的比表面积的减小，并且由于热容量低，能够使催化剂早期活化，并且压力损失低。

公开(公告)号：US07811652B2

公开(公告)日：2010-10-12

申请号：US12408146

申请日：2009-03-20

申请人： Kentaro Makino ,  Kazushige Uchiyama ,  Yoshihide Segawa ,  Tomohiko Nakanishi ,  Yuichi Kobayashi

发明人： Kentaro Makino ,  Kazushige Uchiyama ,  Yoshihide Segawa ,  Tomohiko Nakanishi ,  Yuichi Kobayashi

IPC分类号： B32B3/12 ,  B01J21/00

CPC分类号： C04B38/0009 ,  B01J35/04 ,  C04B35/195 ,  C04B35/62655 ,  C04B2111/0037 ,  C04B2111/00413 ,  C04B2111/0081 ,  C04B2235/787 ,  C04B2235/96 ,  C04B2235/9607 ,  Y10T428/24149

摘要： A formed article is made of cordierite. The cordierite has a plurality of domains and a plurality of crystal grains placed in each domain to form a domain structure. The crystal grains in each domain are substantially aligned in the same direction, and an average size of the domains ranges from 40 μm to 150 μm. The article of cordierite is formed in a honeycomb structure having a plurality of cell walls arranged in a honeycomb form, and a plurality of cells divided by the cell walls are formed. The article of cordierite has a porosity ranging from 36% to 38%, a coefficient of linear thermal expansion equal to or lower than 0.2×106/K and a mechanical strength equal to or higher than 60×106 Pa.

摘要翻译： 成型制品由堇青石制成。 堇青石具有多个晶畴和多个晶粒，放置在每个畴中以形成畴结构。 每个区域中的晶粒基本上在相同的方向上排列，并且该区域的平均尺寸范围为40μm至150μm。 堇青石制品形成为具有以蜂窝状布置的多个单元壁的蜂窝结构体，并且形成有被单元壁分隔的多个单元。 堇青石制品的孔隙率为36％〜38％，线性热膨胀系数等于或低于0.2×106 / K，机械强度等于或高于60×106Pa。

公开(公告)号：US06649563B2

公开(公告)日：2003-11-18

申请号：US09871904

申请日：2001-06-04

申请人： Tomohiko Nakanishi ,  Masanori Yamada ,  Yosiyasu Andou

发明人： Tomohiko Nakanishi ,  Masanori Yamada ,  Yosiyasu Andou

IPC分类号： B01J2104

CPC分类号： B01D53/9422 ,  B01D2255/202 ,  B01D2255/2022 ,  B01D2255/204 ,  B01D2255/2042 ,  B01J23/02 ,  B01J35/002 ,  B01J35/04 ,  B01J37/0238 ,  B01J37/0244 ,  Y10T428/24149

摘要： A ceramic carrier and ceramic catalyst body used as NOx purification catalysts for lean burn engines, which are inexpensive, exhibit high temperature durability and can maintain their catalytic function for extended periods. The ceramic carrier has a diffusion-inhibiting layer formed on the surface of a cordierite honeycomb structure, to inhibit diffusion of alkali metals, alkaline earth metals, etc. carried as NOx storage materials. The diffusion-inhibiting layer is composed of a ceramic material such as Y2O3, NiO or CeO2 which does not react with alkali metals or alkaline earth metals at temperatures of up to 1000° C. and has a melting point of higher than 1000° C., and the diffusion-inhibiting layer inhibits diffusion of catalyst components such as potassium into the interior to prevent their reaction with cordierite, so that the durability is greatly enhanced without reducing catalytic performance.

公开(公告)号：US4421699A

公开(公告)日：1983-12-20

申请号：US250151

申请日：1981-04-02

申请人： Kazuhiro Inoguchi ,  Tomohiko Nakanishi ,  Mitsuru Asano

发明人： Kazuhiro Inoguchi ,  Tomohiko Nakanishi ,  Mitsuru Asano

IPC分类号： B01J21/14 ,  B01J21/16 ,  B01J35/04 ,  B28B3/26 ,  C04B35/195 ,  C04B35/18

CPC分类号： C04B35/195 ,  B01J21/14 ,  B01J35/04

摘要： A method for producing a cordierite body having high crystallinity and exhibiting excellent low thermal expansion property in a specific direction at a relatively low firing temperature comprises the steps of mixing and kneading a batch raw material containing halloysite particles and plate-shaped talc particles, anisostatically forming the batch raw material into a formed body to impart a planar orientation to the plate-shaped talc particles within the batch raw material and drying and firing the formed body.

摘要翻译： 在比较低的烧成温度下，具有高结晶度，特定的低热膨胀特性的堇青石体的制造方法包括：将含有多水高岭土颗粒和板状滑石粒子的分批原料混合混炼， 将批料原料转化成成形体，以使成批原料中的板状滑石颗粒具有平面取向，并干燥并焙烧成形体。

公开(公告)号：US07358210B2

公开(公告)日：2008-04-15

申请号：US10103568

申请日：2002-03-22

申请人： Masakazu Tanaka ,  Tomomi Hase ,  Takashi Kondo ,  Tosiharu Kondo ,  Hiromi Sano ,  Jun Hasegawa ,  Miho Ito ,  Tomohiko Nakanishi ,  Kazuhiko Koike ,  Takumi Suzawa

发明人： Masakazu Tanaka ,  Tomomi Hase ,  Takashi Kondo ,  Tosiharu Kondo ,  Hiromi Sano ,  Jun Hasegawa ,  Miho Ito ,  Tomohiko Nakanishi ,  Kazuhiko Koike ,  Takumi Suzawa

IPC分类号： B01J21/00

CPC分类号： C04B35/195 ,  B01J21/14 ,  B01J37/00

摘要： A ceramic body that can support a required amount of catalyst component, without lowering the characteristics such as strength, manufactured without forming a coating layer and providing a high performance ceramic catalyst body that is excellent in practical utility and durability. This ceramic body is made by substituting at least one of the constituent elements of cordierite that constitutes the substrate ceramic, for example Al, with W that is the element having an empty orbit in d or f orbit, has high bonding strength and is less susceptible to deterioration since the catalyst component Pt is supported by means of chemical bonding.

摘要翻译： 可以在不形成涂层的情况下制造而不会降低强度等特性而能够支撑所需量的催化剂成分的陶瓷体，并提供实用性和耐久性优异的高性能陶瓷催化剂体。 该陶瓷体通过用构成基板陶瓷的堇青石的构成元素中的至少一种，例如Al代替，具有在d或f轨道中具有空轨道的元素的W，具有高的结合强度并且较不敏感 因为催化剂组分Pt是通过化学键合来负载的。

公开(公告)号：US20070254804A1

公开(公告)日：2007-11-01

申请号：US10582957

申请日：2004-12-13

申请人： Jayaseelan Daniel Doni ,  Hideki Kita ,  Naoki Kondo ,  Shunkichi Ueno ,  Tatsuki Ohji ,  Shuzo Kanzaki ,  Kazuhiko Koike ,  Takumi Suzawa ,  Tomohiko Nakanishi

发明人： Jayaseelan Daniel Doni ,  Hideki Kita ,  Naoki Kondo ,  Shunkichi Ueno ,  Tatsuki Ohji ,  Shuzo Kanzaki ,  Kazuhiko Koike ,  Takumi Suzawa ,  Tomohiko Nakanishi

IPC分类号： B01J21/04 ,  B01J23/00

CPC分类号： F01N3/2825 ,  B01J21/14 ,  B01J35/04 ,  B01J37/0009 ,  C01B33/26 ,  C04B35/195 ,  C04B38/0006 ,  C04B2111/0081 ,  F01N2370/02

摘要： The present invention provides a needle-shaped ceramic body and needle-shaped ceramic catalyst body in which a case material is a high specific surface area porous cordierite body that is stable at high temperatures, and also provides methods of producing this needle-shaped ceramic body and needle-shaped ceramic catalyst body. The present invention relates to a needle-shaped ceramic body and needle-shaped ceramic catalyst body in which a base material is a high temperature-stable, high specific surface area porous cordierite body comprising a porous structure having a prescribed porosity and formed of a needle-shaped cordierite crystal phase and further relates to methods of producing this needle-shaped ceramic body and needle-shaped ceramic catalyst body, and by using porous cordierite constituted of needle-shaped crystals as a catalyst-supporting honeycomb structure, the present invention is able to inhibit sintering-induced reduction in the specific surface area. Since a honeycomb can be directly produced as the cordierite sinter itself, an inexpensive product can be provided through the simplifying the prior-art step of coating the interior of the honeycomb.

摘要翻译： 本发明提供一种针状陶瓷体和针状陶瓷催化剂体，其中壳材是高温下稳定的高比表面积的多孔堇青石体，并且还提供了制造该针状陶瓷体的方法 和针状陶瓷催化剂体。 本发明涉及一种针状陶瓷体和针状陶瓷催化剂体，其中基材为高温稳定，高比表面积的多孔堇青石体，其包含具有预定孔隙率的多孔结构，并由针形成 形堇青石结晶相，进一步涉及该针状陶瓷体和针状陶瓷催化剂体的制造方法，通过使用由针状晶体构成的多孔堇青石作为催化剂负载蜂窝结构体，本发明能够 以抑制烧结诱导的比表面积的还原。 由于蜂窝状体可以直接生产为堇青石烧结体本身，所以可以通过简化涂覆蜂窝内部的现有技术的步骤来提供便宜的产品。