Japan Science and Technology Agency

Kyushu University

Oita University

Sumitomo Chemical Company, Limited

Kyoto University

The University of Toyama

Katsutoshi Sato

Katsutoshi Nagaoka

Hiroshi Kitagawa

Kohei Kusada

Hideyuki Higashimura

Miho Yamauchi

Noritatsu Tsubaki

Takeshi Ishiyama

Syo Matsumura

Tomokazu Yamamoto

Hirokazu Kobayashi

Md Shahajahan Kutubi

Akihiro Yuasa

Yuta Ogura

A composite oxide including a metal element represented by the composition of general formula: AX, where the composite oxide comprises an oxide of A and an oxide of X in a mixed state: A represents an element selected from the group consisting of Sc, Y, and a trivalent lanthanoid; X represents an element selected from the group consisting of Ca, Sr, and Ba; n is 0<n<1; y is 0<y<1; and n+y=1. Also, a metal-supported material in which cobalt particles are supported on the composite oxide.

Composite oxide, metal-supported material, and ammonia synthesis catalyst

A composite having a composition expressed by AXMwherein, A represents a lanthanoid that is in a trivalent state at least partially or entirely, X represents an element that is a Group-2 element in the periodic table selected from the group consisting of Ca, Sr, and Ba, or a lanthanoid that is different from A, M represents an element that is a Group-1 element in the periodic table, a Group-2 element selected from the group consisting of Ca, Sr, and Ba, or a lanthanoid that is different from A and X, n satisfies 0<n<1, y satisfies 0<y<1, m satisfies 0≤m<1, and n+y+m=1.

The present invention provides an alloy fine particle including palladium and ruthenium, the alloy fine particle including at least one first phase in which the palladium is more abundant than the ruthenium and at least one second phase in which the ruthenium is more abundant than the palladium, the at least one first phase and the at least one second phase being separated by a phase boundary, the palladium and the ruthenium being distributed in the phase boundary in such a manner that the molar ratio of the palladium and the ruthenium continually changes, a plurality of crystalline structures being present together in the phase boundary.

Alloy microparticles and method for producing same, alloy microparticle cluster, catalyst, and method for producing same

The catalyst disclosed is a catalyst including palladium-ruthenium alloy fine particles in which palladium and ruthenium form a solid solution. The palladium-ruthenium alloy fine particles used in this catalyst can be produced by a production method including the step of maintaining a solution containing a protective agent, a reducing agent, a palladium compound or palladium ions, and a ruthenium compound or ruthenium ions at a temperature equal to or higher than a predetermined temperature.

Catalyst using Pd-Ru solid solution alloy fine particles

Provided are a method of manufacturing an olefin having 2 to 4 carbon atoms including: reacting a catalyst with synthesis gas through a Fischer-Tropsch reaction, thereby obtaining the olefin having 2 to 4 carbon atoms, in which the catalyst is a catalyst obtained by reducing the iron ion and the cobalt ion in a dispersion liquid or a solution containing the iron ion, the cobalt ion and a dispersant that interacts with the iron ion and the cobalt ion, and a method of manufacturing propylene, which uses the above manufacturing method.

Method of manufacturing olefin having 2 to 4 carbon atoms by Fischer-Tropsch reaction

Growing community of inventors

Oita, Japan

Katsutoshi Sato