摘要
目前,国内辛酸铑催化剂的生产工艺复杂落后,产品纯度和收率较低,不能满足工业化生产的需要。以醋酸铑二聚体为铑源,选用一种特殊溶剂,采取配体交换的方法,合成高纯度的辛酸铑二聚体催化剂,生产条件绿色环保。并运用红外光谱及元素分析对其进行表征,确定产物的组成及其结构,辛酸铑二聚体的元素组成与理论结果基本一致。考察合成反应温度、反应时间及辛酸与醋酸铑二聚体物质的量比对产物收率的影响。结果表明,在反应温度120℃、反应时间3 h和辛酸与醋酸铑二聚体物质的量比为4条件下,辛酸铑二聚体产率达98%。
The current production process of rhodium（ 11 ） octanoate dimmer has the disadvantages, such as complex and backward process, lower purity and yield of the product, and cannot meet the requirement of the commercial production. Using octanoic acid and rhodium （ II ） acetate dimmer as the raw materials, the high-purity rhodium octanoate dimmer was prepared through ligand exchange reaction in a special sol- vent under green production condition. The structure of rhodium octanoate dimmer was characterized by IR and elemental analysis. The effect of reaction temperature, reaction time and molar ratio of octanoic acid to rhodium acetate dimmer was investigated. The results showed that the composition and structure of the product were determined, and the analytic results of the elemental composition of rhodium octanoate dimmer was basically consistent with the theoretical value ; the yield of rhodium octanoate dimmer reached 98% under the optimum condition of reaction temperature 120 ℃, reaction time 3 h, and molar ratio of octanoic acid to rhodium acetate dimmer = 4.
出处
《工业催化》
CAS
2014年第3期232-234,共3页
Industrial Catalysis
关键词
催化剂工程
辛酸铑二聚体
醋酸铑二聚体
辛酸
catalyst engineering
rhodium octanoate dimmer
rhodium acetate dimmer
octanoic acid
