| 发明名称 | Process for production of catalyst for alkenyl acetate production | ||
| 摘要 | A catalyst is produced by a process that comprises at least a step of impregnating a carrier with an alkali solution having a mass of greater than 0.9 times and no greater than 1.0 times the amount of water absorption of the carrier, a step of further impregnating the carrier by contact with a solution A comprising at least a compound containing palladium or platinum and a compound containing a Group 11 element, a step of reduction treatment and a step of loading an acetic acid salt on the carrier, wherein the carrier is first impregnated with the alkali solution and then the contacted with solution A to form a catalyst precursor, and wherein the total amount of the alkali solution and solution A is a mass of at least 1.1 times and no greater than 10.0 times the amount of water absorption of the carrier. A catalyst for alkenyl acetate production is obtained that exhibits improved activity and selectivity. | ||
| 申请公布号 | US9527060(B2) | 申请公布日期 | 2016.12.27 |
| 申请号 | US200712377961 | 申请日期 | 2007.08.08 |
| 申请人 | SHOWA DENKO K.K. | 发明人 | Saihata Meiko |
| 分类号 | C07C67/055;B01J31/04;B01J23/89;B01J23/58;B01J37/02 | 主分类号 | C07C67/055 |
| 代理机构 | Sughrue Mion, PLLC | 代理人 | Sughrue Mion, PLLC |
| 主权项 | 1. A process for production of a catalyst for alkenyl acetate production, where the catalyst consists of at least (a) a carrier, (b) palladium or platinum, (c) a Group 11 element and (d) an acetic acid salt, the process comprising: 1. a step of impregnating a carrier with an alkali solution, 2. a successive step without drying of further impregnating the carrier by contact with a solution A comprising at least a compound containing palladium or platinum and a compound containing a Group 11 element, 3. a step of reduction treatment and 4. a step of loading an acetic acid salt on the carrier, and the process being characterized in that in the first step, the carrier is impregnated with an alkali solution having a mass of greater than 0.9 times and no greater than 1.0 times the amount of water absorption of the carrier, after which in the second step it is contacted with solution A to form a catalyst precursor, and in that the total amount of the alkali solution and solution A is a mass of at least 1.5 times and no greater than 8.0 times the amount of water absorption of the carrier. | ||
| 地址 | Tokyo JP | ||