Shinshu University

Mie University

Japan Science and Technology Agency

Wataru Shimizu

Yasushi Murakami

Shuhei Nakamura

Wataru Sugimoto

Kazuyoshi Okada

Hiroaki Cho

Yasunori Ashida

Masami Kobayashi

Takuya Kawashima

Provided is a layered alkali iridate and a layered iridic acid to be used for producing iridium oxide nanosheets, and an iridium oxide nanosheet. A layered alkali iridate with composition of MIrO.nHO (where M is a monovalent metal, x is 0.1 to 0.5, y is 1.5 to 2.5, and n is 0.5 to 1.5), wherein MIrO.nHO has a layered structure. The M is potassium, and the layered alkali iridate has diffraction peaks at 2&#x3b8; diffraction angles of 13.0&#xb0; and 26.0&#xb0;. A layered iridic acid with a composition of HIrO.nHO (where x is 0.1 to 0.5, y is 1.5 to 2.5, and n is 0 to 1), wherein HIrO.nHO has a layered structure. This layered iridic acid has diffraction peaks at 2&#x3b8; diffraction angles of 12.3&#xb0; and 24.6&#xb0;. A single crystalline iridium oxide nanosheet having a thickness of 3 nm or less.

Layered alkali iridate, layered iridic acid, and iridium oxide nanosheet

The present invention relates to a metal oxide-platinum compound catalyst comprising 5 to 95 parts by weight of a metal oxide and 95 to 5 parts by weight of platinum as the balance. The platinum has a form to reticulately cover at least a part of a particle of the metal oxide. The wires constituting the platinum mesh have an average wire diameter of 5 nm or smaller.

Metal oxide-platinum compound catalyst and method for producing same

Disclosed are: a polyorganosiloxane composition which can be cured into a product having high strength and has little influence on the environment; and a cured product of the polyorganosiloxane composition. Specifically disclosed are: a polyorganosiloxane composition comprising (A) a polyorganosiloxane in which at least one end in the molecule is modified with a silanol, (B) a titanium alkoxide in an amount of 0.01 to 2 moles relative to 1 mole of the polyorganosiloxane, and (C) an &#x3b1;-hydroxycarbonyl compound or a hydroxycarboxylic acid ester in an amount of 0.01 to 2 moles relative to 1 mole of the polyorganosiloxane; and a cured product of the polyorganosiloxane composition.

Polyorganosiloxane composition and cured production thereof

Disclosed is an organosiloxane composition which can be produced at low cost and is usable for bonding of glasses, metals and resins. The organosiloxane composition can provide a cured product exhibiting excellent heat resistance and cold resistance, while having high strength and high transparency. Specifically disclosed is a polyorganosiloxane composition containing (A) a polyorganosiloxane wherein at least one end of each molecule is modified with a silanol group, and (B) 0.5-4.0 moles of a metal alkoxide per 1 mole of the polyorganosiloxane, wherein the mean molecular weight (Mw) of the polyorganosiloxane according to the mass fraction is not more than 1,000. Also specifically disclosed are a cured product of the composition and a method for producing the composition.

Polyorganosiloxane composition, cured product of the composition, and method for producing the composition

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Ueda, Japan

Wataru Shimizu