双氧水-氨水氧化浸出废Mo-Ni/Al_(2)O_(3)型加氢催化剂中的钼  

Oxidative Leaching of Molybdenum from Spent Mo-Ni/Al_(2)O_(3)Hydrogenation Catalysts by Hydrogen Peroxide and Ammonia

作　　者：赵歌 张广积[2,3] 梁杰 沈蔡龙[2,3] 吕岳奋 陈彦臻 杨超 ZHAO Ge;ZHANG Guang-ji;LIANG Jie;SHEN Cai-long;LYU Yue-fen;CHEN Yan-zhen;YANG Chao(School of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;National Key Laboratory of Petrochemical Molecular Transformation and Reaction Engineering&CAS Key Laboratory of Green Process and Engineering,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China;School of Chemical Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;State Key Laboratory of Materials-Oriented Chemical Engineering,College of Chemical Engineering,Nanjing Tech University,Nanjing 211816,China)

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083 [2]中国科学院过程工程研究所,石油化工分子转化与反应工程全国重点实验室/中国科学院绿色过程与工程重点实验室,北京100190 [3]中国科学院大学化学工程学院,北京100049 [4]南京工业大学化学工程学院材料化学工程国家重点实验室,江苏南京211816

出　　处：《稀有金属与硬质合金》2023年第6期16-22,共7页Rare Metals and Cemented Carbides

基　　金：国家重点研发计划(2022YFB3504003);国家自然科学基金国际(地区)合作与交流项目(21961160745);化学与精细化工广东省实验室项目(1922006)。

摘　　要：针对废镍钼加氢催化剂提出了一种双氧水结合氨水氧化浸出工艺,选择性浸出其中的钼。通过实验研究了双氧水用量、浸出温度、浸出时间对钼浸出率的影响,并对浸出渣进行了SEM、EDS、XRD表征。结果表明:在滴加氨水维持反应体系pH为8~9、双氧水用量为2.0倍理论量、浸出温度为80℃、浸出时间为120min、搅拌速度为250r/min条件下,Mo浸出率可达到97%以上,同时Al和Ni的溶解率维持在较低水平。An oxidative leaching process of hydrogen peroxide combined with ammonia was proposed for selective leaching of molybdenum from spent nickel-molybdenum hydrogenation catalysts.The effects of hydrogen peroxide dosage,leaching temperature and leaching time on the leaching rate of molybdenum were studied by experiments,and the leaching residue was characterized by SEM,EDS and XRD.The results show that the leaching rate of molybdenum can reach over 97%under the conditions of a reaction system pH of 8~9 maintained by adding ammonia,hydrogen peroxide dosage of 2.0 times the theoretical amount,leaching temperature of 80℃,leaching time of 120 min,and stirring speed of 250 r/min,while the dissolution rates of aluminum and nickel remain at a low level.

关 键 词：废加氢催化剂 双氧水 氨水 氧化浸出 钼 铝 镍 

分 类 号：TF841.2[冶金工程—有色金属冶金]