发明名称 |
Silica-supported catalyst |
摘要 |
A silica-supported catalyst used when producing a corresponding unsaturated nitrile in a vapor-phase catalytic ammoxidation reaction of propane or isobutane, the catalyst including a metal oxide represented by the following formula (1),
MoVaNbbXcTdZeOn (1)(wherein X represents at least one or more elements selected from Sb and Te; T represents at least one or more elements selected from Ti, W, Mn, and Bi; Z represents at least one or more elements selected from La, Ce, Yb, and Y; and a, b, c, d, e, and n are in the range of 0.05≦a≦0.5, 0.01≦b≦0.5, 0.001≦c≦0.5, 0≦d≦1, and 0≦e≦1, respectively, and n denotes a value that satisfies an atomic valence)wherein the silica-supported catalyst has an average pore size of 60 to 120 nm, a total pore volume of 0.15 cm3/g or more, a specific surface area of 5 to 25 m2/g, and a crystallite size of 40 to 250 nm as determined from half width of a (001) peak by X-ray diffraction. |
申请公布号 |
US9199921(B2) |
申请公布日期 |
2015.12.01 |
申请号 |
US201214112269 |
申请日期 |
2012.04.09 |
申请人 |
ASAHI KASEI CHEMICALS CORPORATION |
发明人 |
Endo Satoshi;Kato Takaaki |
分类号 |
B01J23/28;C07C253/24;B01J21/08;B01J23/00;B01J23/22;B01J23/31;B01J23/34;B01J27/057;B01J35/10;B01J23/30 |
主分类号 |
B01J23/28 |
代理机构 |
Birch, Stewart, Kolasch & Birch, LLP |
代理人 |
Birch, Stewart, Kolasch & Birch, LLP |
主权项 |
1. A silica-supported catalyst used when producing a corresponding unsaturated nitrile in a vapor-phase catalytic ammoxidation reaction of propane or isobutane, the catalyst comprising a metal oxide represented by the following formula (1):
MoVaNbbXcTdZeOn (1), wherein X represents at least one or more elements selected from Sb and Te; T represents at least one or more elements selected from Ti, W, Mn, and Bi; Z represents at least one or more elements selected from La, Ce, Yb, and Y; and a, b, c, d, and e are in a range of 0.05≦a≦0.5, 0.01≦b≦0.5, 0.001≦c≦0.5, 0≦d≦1, and 0≦e≦1, respectively, and n represents a value that satisfies an atomic valence, and wherein the silica-supported catalyst has an average pore size of 60 to 120 nm, a total pore volume of 0.15 cm3/g or more, a specific surface area of 5 to 25 m2/g, and a crystallite size of 40 to 250 nm as determined from half width of a (001) peak by X-ray diffraction. |
地址 |
Tokyo JP |