Toyota Jidosha Kabushiki Kaisha

Masashi Kikugawa

Hideyuki Matsumoto

Marie Ishikawa

Yoshihiro Goto

Haruo Imagawa

Mitsuru Matsumoto

Tetsuya Namba

Akinori Satou

An ammonia synthesis catalyst, includes a composite oxide carrier in which at least one additive metal element selected from the group consisting of titanium (Ti), zirconium (Zr), hafnium (Hf), aluminum (Al), gallium (Ga), indium (In), silicon (Si), germanium (Ge), and tin (Sn) is solid-solutionized in a composite oxide containing cerium (Ce) and a lanthanide other than Ce and having a composition represented by the following formula:CeABO(in the formula, A represents a lanthanide other than Ce, B represents the additive metal element, x represents a molar fraction of Ce, y represents a molar fraction of the additive metal element, 1−x−y represents a molar fraction of a lanthanide other than Ce, x and y satisfy 0.1≤x≤0.9, 0.01≤y≤0.3, and 0.11≤x+y≤0.91, d represents a molar ratio of oxygen atoms, and 1.5≤d≤2 is satisfied);

Ammonia synthesis catalyst, method of producing the same, and method of synthesizing ammonia using the same

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Nagakute, Japan

Masashi Kikugawa