Other

Yoshida Kogyo K.k.

Koji Hashimoto

Ykk Corporation

Hitachi Zosen Corporation

Daiki Engineering Co., Ltd.

Mitsui Engineering and Shipbuilding Company Limited

Daiki Ataka Engineering Co., Ltd.

Mitsubishi Materials Corporation

Mitsubishi Jukogyo Kabushiki Kaisha

Toyo Soda Manufacturing Co., Ltd.

Yanmar Diesel Engine Co., Ltd.

Canon Kabushiki Kaisha

Hashimoto, Koji

Katsuhiko Asami

Asahi Kawashima

Naokazu Kumagai

Tomonori Mori

Kazuo Chadani

Hideaki Yoshioka

Hiroki Habazaki

Marek Danielewski

Stanislaw Mrowec

Hiroyuki Takano

Kouichi Izumiya

Hiroyuki Shinomiya

Zenta Kato

Ahmed Abd El-Moneim

Kimikado Miura

Tsuyoshi Masumoto

Akira Mitsuhashi

Yutaka Adachi

Yasunori Murakami

Hiroshi Kasutani

Yoshio Takizawa

Kazutaka Sakiyama

Kazuo Takasaki

Kazuo Shimamura

Kiyohiro Teruuchi

Jinhan Kim

Hiroki Habazakt

Motoi Hara

Toshihisa Kanda

A methanation reaction catalyst for methanation by allowing carbon dioxide to react with hydrogen, wherein the methanation reaction catalyst includes a stabilized zirconia support having a tetragonal crystal structure and in which Ca and Ni are incorporated in the crystal structure, and Ni in the metal state supported on the stabilized zirconia support, includes the following in atomic % based on metals in the element state, A) Zr composing the stabilized zirconia support: 6 to 62 atomic %, B) Ca incorporated in the crystal structure: 1 to 20 atomic %, and C) a total of Ni incorporated in the crystal structure and Ni supported on the stabilized zirconia support: 30 to 90 atomic %, and the atomic ratio of Ca/(Zr+Ca) is 0.14 to 0.25.

Methanation reaction catalyst, method for producing methanation reaction catalyst and method for producing methane

Disclosed is a catalyst for methanation reaction producing methane with high conversion by reaction of hydrogen with carbon dioxide, or a gas mixture of carbon dioxide and carbon monoxide, or a gas mixture containing these compounds as the main components. The catalyst is prepared by the steps of mixing (A) aqueous zirconia sol with salts of (B) stabilizing element(s), which is selected from the group consisting of Y, La, Ce, Pr, Nd, Sm, Gd, Dy, Ca and Mg, and (C) iron group element(s), drying and calcining the mixture to obtain a catalyst precursor, and subsequent reduction of the precursor. The catalyst comprises, by atomic %, A: 18-70%, B: 1-20% and C: 25-80% based on the elemental states of the metals. The catalyst is characterized by multiple oxide of tetragonal zirconia structure, in which not only the stabilizing element(s) but also a part of the iron group element(s) is incorporated, and on which the iron group element(s) in the metallic state is supported.

Catalyst for methanation of carbon oxides, preparation method of the catalyst and process for the methanation

Disclosed is an anode for electrochemical reactions, such as electrolysis and electrodeposition, comprising a titanium substrate covered with metal oxide, in which the amount of platinum group element(s) is decreased in comparison with the ordinary anode of platinum group element oxides so as to decrease the cost and to mitigate the problem of natural resources, and further, durability of the anode is improved. The electrocatalyst of the anode is multiple oxide of platinum group element(s), and Sn and Sb. The cationic ratio of Sn to Sb is 1-40 and the sum of Sn and Sb is 1-90 cationic %. The electrocatalyst is prepared by coating mixed solutions of the soluble salts on the substrate and baking, so as to convert the metal salts to metal oxides.

Anode for electrochemical reaction

Disclosed is an oxygen evolution anode for evolving oxygen without chlorine evolution in electrolysis of aqueous solutions of sodium chloride having high performance and durability with decreased amount of the precious metal(s) in the intermediate layer to decrease manufacturing cost and to ease problem of the resources. The oxygen evolution anode comprises an electroconductive substrate, an intermediate layer and an electrocatalyst. The intermediate layer prepared by calcination consists of multiple oxide of the platinum group element(s), Sn and Sb, with the Sn/Sb ratio of 1-40 and with the sum of Sn and Sb of 90 cationic % or less. The electrocatalyst is prepared by anodic deposition and consists of 0.1-3 cationic % of Sn, 0.2-20 cationic % of Mo and/or W and the balance of Mn.

Oxygen evolution electrode

Disclosed is an oxygen evolution electrode for formation of only oxygen without formation of chlorine at anode in the performance and the durability of the anode is so high that they are, even in strong acid, at the same level as that in neutral solution. The electrode is prepared by anodic deposition of multiple oxide consisting of Mn&#x2014;Mo&#x2014;Sn, Mo&#x2014;W&#x2014;Sn or Mn&#x2014;Mo&#x2014;W&#x2014;Sn on an IrO2-coated titanium substrate. The multiple oxide are composed of Mn as the main component, 0.1-3 cationic % of Sn and 0.2-20 cationic % of Mo and/or W.

An amorphous alloy which is resistant to hot corrosion in sulfidizing and oxidizing atmospheres at high temperatures, consisting of at least one element selected from the group of Al and Cr and at least one element selected from the refractory metals Mo, W, Nb, and Ta, a portion of the set forth refractory metals being allowed to be substituted with at least one element selected from Fe, Co, Ni and Cu. The addition of Si further improves the alloy's oxidation resistance.

Amorphous alloys resistant to hot corrosion

A corrosion-resistant amorphous alloy containing Ta in an amount of from 10 to 40 atomic % and Mo, Cr, W, P, B and/or Si is disclosed. This alloy can be prepared by rapidly cooling and solidifying molten alloy, shows a satisfactory corrosion resistance in high-temperature concentrated phosphoric acid, and is adapted to be used as a plant structural material or a separator for a fuel cell.

Amorphous nickel alloy having high corrosion resistance

An amorphous alloy which is resistant to hot corrosion in sulfidizing and oxidizing atmospheres at high temperatures, consisting of at least one element selected from the group of Al and Cr and at least one element selected from refractory metals of Mo. W, Nb and Ta, a portion of the set forth refractory metals being allowed to be substituted with at least one element selected from Ti, Zr, Fe, Co, Ni and Cu. The addition of Si further improves the alloy's oxidation resistance.

Amorphous alloy comprising 30 to 75 atomic % Cr, the remainder being substantially at least one element selected from the group consisting of Ti and Zr and alloys represented by the general formula: X.sub.a Cr.sub.b M.sub.c wherein X is at least one element selected from the group consisting of Ti and Zr; M is at least one element selected from the group consisting of Mg, Al, Fe, Co, Ni, Cu, Mo and W; and a, b, and c are, in atomic percentage, a&gt;20, 20 .ltoreq.b.ltoreq.75, 0&lt;c .ltoreq.20 and a+b+c=100. The alloys are excellent in corrosion resistance and wear resistance, form a stable protective film and are spontaneously passive, even in corrosive environment such as a poorly oxidizing, highly corrosive HCl solution containing chlorine ions.

Highly corrosion-resistant amorphous alloys

An amorphous alloy which is resistant to hot corrosion in sulfidizing and oxidizing atmospheres at high temperatures, consisting of at least one element selected from the group of Al and Cr and at least one element selected from refractory metals of Mo. W, Nb and Ta, a portion of the set forth refractory metals being allowed to be substituted with at least one element selected from Ti, Zr, Fe, Co, Ni and Cu. The addition of Si further improves the alloy oxidation resistance.

Amorphous alloys resistant against hot corrosion

Amorphous alloys having an extremely high corrosion resistance comprise Cr and at least one element selected from Ta and Nb, as essential components, and are spontaneously passive owing to the formation of stable protective films, even in very corrosive environments such as poorly oxidizing concentrated hydrochloric acid. The amorphous alloy may further include one or more elements appropriately selected from other alloying elements of Al, Ti, Zr, Fe, Co, Ni, Cu, Mo and W. The amorphous alloys have advantageous properties, such as very high corrosion resistance, high corrosion resistance at elevated temperatures and high wear resistance, and, therefore are useful in chemical plants or other industrial and domestic applications.

High corrosion resistant amorphous alloys

An amorphous alloy which is resistant to hot corrosion in sulfidizing and oxidizing atmospheres at high temperatures, consisting of Cr and at least one element selected from refractory metals of Nb and Ta, a portion of the set forth refractory metals being allowed to be substituted with at least one element selected from Ti, Zr, Fe, Co, Ni and Cu. The addition of Si further improves the alloy's oxidation resistance.

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Sendai, Japan

Koji Hashimoto