氯化铑制备工艺及其催化性能研究  

Preparation of rhodium chloride and its catalytic performance

作　　者：张蕾[1,2] 唐应吉 王振宇 杨燕红[1] 马晓迅[1] 

机构地区：[1]西北大学化工学院,陕西西安710069 [2]陕西煤业化工技术开发中心有限责任公司,陕西西安710054

出　　处：《化学工程》2011年第12期73-76,共4页Chemical Engineering(China)

基　　金：陕西省"13115"科技创新工程(2010ZDKG-43)(2009ZKC04-06);陕西省洁净煤转化工程技术研究中心(2008ZDGC-13);西北大学研究生创新基金(09YZZ52);陕西省甲醇衍生物及聚合物工程研究中心

摘　　要：研究氯化铑的制备工艺,同时开发一种快速溶解铑的溶剂,并考察此方法制备的氯化铑在羰基合成醋酐、醋酸中的催化性能。以金属铑为原料,采用自制高效溶剂R101,快速将铑溶解后,经过旋转蒸发仪将溶剂R101回收后待下次再利用,经干燥后可得氯化铑产品,通过XPS,SEM,XRD和ICP的表征,来证明本方法制备的氯化铑具备高的催化活性,同时确定了最佳合成条件。本方法制备的氯化铑收率高,纯度高,溶剂可回收再利用,且对铑的一次溶解率大,溶解条件缓和,利于工业化生产,该氯化铑在均相羰基合成醋酐醋酸反应中表现出高反应活性。通过溶剂R101可将铑快速溶解并能回收再利用,降低了生产成本,在优化的工艺条件下可制备得高纯度的氯化铑,该氯化铑在羰基合成醋酐醋酸工艺中表现出高活性,有很好的工业应用前景。To investigate the preparation process of rhodium chloride and develop a new solvent to dissolve rhodium easily, the catalytic properties of the produced rhodium chloride in methanol carhonylation reaction were discussed for the production of anhydride and acetic acid. With rhodium metal as rhodium source, the rhodium chloride was prepared from self-made dissolvant R101 at one-step, the R101 then was recovered by rotary evaporator,and the rhodium chloride was obtained after being dried. It is characterized by XPS, SEM, XRD and ICP to demonstrate its high catalytic properties. The study also determined the optimal process parameters. This synthesis process of rhodium chloride shows high yield and high purity, and the dissolvant can he recovered from rotary evaporator, which can reduce the production cost. The produced rhodium chloride also shows high reactivity in methanol carbonylation process. Under the optimizing process conditions, synthesized rhodium chloride has high purity and the catalytic performance is excellent. The rhodium chloride produced has very good commercialized application foreground.

关 键 词：氯化铑 醋酐 醋酸 羰基化 

分 类 号：TQ225.241[化学工程—有机化工]