摘要
钌锌催化剂是液相法苯选择加氢制环己烯的高效催化剂,用量大、贵金属含量高,研究失效钌锌催化剂中钌的回收具有重要意义。本研究提出了一种从失效钌锌催化剂中回收钌的方法,并通过实验优化了工艺条件。最佳工艺条件为,1)焙烧:在650℃下焙烧4 h,球磨至80目;2)碱熔:失效催化剂:氢氧化钠:高锰酸钾(质量比)为1:2:0.5,在650℃下熔融5 h;3)蒸馏:于95℃通氯气蒸馏钌2 h。在最优条件下,钌直收率97.66%,产出的三氯化钌质量符合标准要求。
Ruthenium-zinc catalyst was very efficient for the selective hydrogenation of benzene to cyclohexene in a liquid phase.Owing to a large amount of this kind of catalyst and high contents of noble metals in it,it was of great significance to study the recovery of ruthenium from the spent catalyst.In this study,a recovery method was proposed,and the related process conditions optimized through experiments.were as follows:1)Roasting at 650℃for 4 h,ball milling to 80 mesh,2)alkali melting at 650℃for 5 h with sodium hydroxide and potassium permanganate(1:2:0.5 mass ratio,3)distilling ruthenium 2 h at 95℃using chlorine gas.Under these optimal conditions,the direct yield of ruthenium was 97.66%,and the quality of ruthenium trichloride conformed to the standard.
作者
杨深宏
陈文俊
高毅远
李庆华
彭春生
杨泉
YANG Shenhong;CHEN Wenjun;GAO Yiyuan;LI Qinghua;PENG Chunsheng;YANG Quan(Sino-Platinum Metals Resources(Yimen)Co.Ltd.,Yuxi 651100,Yunnan,China;Yongxing Sino-Platinum Metals Resources Co.Ltd.,Chenzhou 423399,Hunan,China)
出处
《贵金属》
CAS
北大核心
2023年第4期37-42,共6页
Precious Metals
基金
云南省科技人才和平台计划项目(2018HB112)
国家重点研发计划(2019YFC1907505)。
关键词
冶金技术
钌锌催化剂
钌
回收
metallurgical technology
ruthenium-zinc catalyst
ruthenium
recycling
