| 发明名称 | Process for the preparation of 2, 3, 3, 3-tetrafluoropropene | ||
| 摘要 | The invention provides a process for the preparation of 1234yf comprising (a) contacting 1,1,2,3,3,3 hexafluoropropene (1216) with hydrogen in the presence of a hydrogenation catalyst to produce 1,1,2,3,3,3 hexafluoropropane (236ea); (b) dehydrofluorinating 236ea to produce 1,2,3,3,3 -pentafluoropropene (1225ye); (c) contacting 1225 ye with hydrogen in the presence of a hydrogenation catalyst to produce 1,2,3,3,3 -pentafluoropropane (245eb); and (d) dehydrofluorinating (245eb) to produce (1234yf). | ||
| 申请公布号 | US9162948(B2) | 申请公布日期 | 2015.10.20 |
| 申请号 | US200912992637 | 申请日期 | 2009.05.15 |
| 申请人 | Mexichem Amanco Holding S.A. de C.V. | 发明人 | Smith John W;McGuiness Claire;Sharratt Andrew P;Taylor Andrew M |
| 分类号 | C07C21/00;C07C17/00;C07C21/18;C07C17/25;C07C17/354 | 主分类号 | C07C21/00 |
| 代理机构 | Ryan Kromholz & Manion, S.C. | 代理人 | Ryan Kromholz & Manion, S.C. |
| 主权项 | 1. A process for the preparation of 2,3,3,3-tetrafluoropropene (1234yf), the process comprising: (a) contacting 1,1,2,3,3,3-hexafluoropropene (1216) with hydrogen in the presence of a hydrogenation catalyst to produce 1,1,2,3,3,3hexafluoropropane (236ea); (b) dehydrofluorinating 236ea to produce 1,2,3,3,3-pentafluoropropene (1225ye); (c) contacting 1225ye with hydrogen in the presence of a hydrogenation catalyst to produce 1,2,3,3,3-pentafluoropropane (245eb); and (d) dehydrofluorinating 245eb to produce 1234yf, wherein steps (a) and (c) are carried out simultaneously in the same reactor, wherein less than 8.8 mol % CF3CFHCH3 (254eb) is produced as a by-product. | ||
| 地址 | Tlalnepantla MX | ||