摘要:
To provide an exhaust gas catalyst using a fired aluminum phosphate body with more excellent performance, and a method for producing it. (1) An exhaust gas purification catalyst including at least one platinum-group metal selected from the group consisting of Pt, Rh and Pd having a mean particle diameter of between 0.50 nm and 2.0 nm, supported on a tridymite-type fired aluminum phosphate body. (2) A method for producing an exhaust gas purification catalyst, including the steps of: firing aluminum phosphate obtained from an aqueous solution prepared to a pH of 3.5 to 4.5, at a temperature of between 1000° C. and 1200° C. for 2 hours or longer, to obtain a fired aluminum phosphate body, and supporting at least one type of platinum-group metal selected from the group consisting of Pt, Rh and Pd on the fired aluminum phosphate body.
摘要:
An exhaust gas purifying catalyst, which is obtained by having at least one platinum group metal selected from the group consisting of Pt, Rh, and Pd supported on a calcined aluminum phosphate body. The calcined aluminum phosphate body has a tridymite crystal structure and the ratio of the cumulative pore distribution of pores having a size of 10 nm or less to the cumulative pore distribution of pores having a size of 300 nm or less is 20% or more in the calcined aluminum phosphate body. A method for producing an exhaust gas purifying catalyst including calcining aluminum phosphate, which has been obtained from an aqueous solution that is controlled to have a pH within a predetermined range, at a predetermined temperature for a predetermined period of time, thereby obtaining a calcined aluminum phosphate body; and having at least one platinum group metal selected from the group consisting of Pt, Rh, and Pd supported on the calcined aluminum phosphate body.
摘要:
A medium transporting apparatus is used for transporting a label web including a carrier web and labels adhered thereto. A platen roller transports the label web in a transport path. A pressure roller is disposed downstream of the separating member with respect to the transport path, and causes the carrier web to be kinked. The pressure roller urges the carrier web against the platen roller. A support member is mounted on a cover and rotatably supports the pressure roller. The cover is pivoted between an open position and a closed. Immediately after the cover has moved to the closed position, the pressure roller contacts the platen roller and then slides by a predetermined amount on the circumferential surface of the platen roller in a direction away from the separating member. Thus, the carrier web sandwiched between the pressure and platen rollers becomes taut.
摘要:
Provided are metal particles comprising an at least partial solid solution of rhodium and gold. Also provided is a method for producing metal particles comprising adding a boron-based reducing agent to a mixed solution containing a rhodium salt and a gold salt to produce the metal particles comprising an at least partial solid solution of rhodium and gold. Furthermore, provided are an exhaust gas purifying catalyst comprising the metal particles supported on a catalyst support and a method for producing the same.
摘要:
To provide an exhaust gas catalyst using a fired aluminum phosphate body with more excellent performance, and a method for producing it. (1) An exhaust gas purification catalyst including at least one platinum-group metal selected from the group consisting of Pt, Rh and Pd having a mean particle diameter of between 0.50 nm and 2.0 nm, supported on a tridymite-type fired aluminum phosphate body. (2) A method for producing an exhaust gas purification catalyst, including the steps of: firing aluminum phosphate obtained from an aqueous solution prepared to a pH of 3.5 to 4.5, at a temperature of between 1000° C. and 1200° C. for 2 hours or longer, to obtain a fired aluminum phosphate body, and supporting at least one type of platinum-group metal selected from the group consisting of Pt, Rh and Pd on the fired aluminum phosphate body.
摘要:
Provided are metal particles comprising an at least partial solid solution of rhodium and gold. Also provided is a method for producing metal particles comprising adding a boron-based reducing agent to a mixed solution containing a rhodium salt and a gold salt to produce the metal particles comprising an at least partial solid solution of rhodium and gold. Furthermore, provided are an exhaust gas purifying catalyst comprising the metal particles supported on a catalyst support and a method for producing the same.
摘要:
A medium transporting apparatus is used for transporting a label web including a carrier web and labels adhered thereto. A platen roller transports the label web in a transport path. A pressure roller is disposed downstream of the separating member with respect to the transport path, and causes the carrier web to be kinked. The pressure roller urges the carrier web against the platen roller. A support member is mounted on a cover and rotatably supports the pressure roller. The cover is pivoted between an open position and a closed. Immediately after the cover has moved to the closed position, the pressure roller contacts the platen roller and then slides by a predetermined amount on the circumferential surface of the platen roller in a direction away from the separating member. Thus, the carrier web sandwiched between the pressure and platen rollers becomes taut.