摘要
采用氨水、碳酸铵碱性溶液作为浸出剂,在水热条件下浸出处理废弃钴钼加氢催化剂,探究了影响金属元素Mo和Co浸出的主要因素。结果表明:在水热条件下,以氨水和碳酸铵作为复合浸出剂能有效抑制Al的浸出,同时对金属元素Mo和Co的浸出率较高。在氨水浓度为10 mol/L,碳酸铵浓度为2 mol/L,固液比为1:18 g/mL和反应温度为90℃的条件下,Mo和Co的单级浸出率分别达到81.7%和52.6%。进一步采用沉淀法分离回收浸出液中的Mo,制备了花瓣状形貌的(NH_(4))_(3)PO_(4)(MoO_(3))_(12)·4H_(2)O产品;利用焙烧后的浸余残渣作为载体负载Cu和Ni制备萘选择加氢催化剂,其催化效果与商品氧化铝载体制备的催化剂相当。
The spent Co-Mo hydrogenation catalyst was hydrothermally treated by a weak alkaline leaching agent,a mixture of ammonium hydroxide and ammonium carbonate solution,and factors affecting the leaching of metal elements Mo and Co were investigated.The results showed that with the mixture of ammonium hydroxide and ammonium carbonate solution as leaching agent could inhibit Al leaching,on the other hand,it could obtain high extraction of Mo and Co.Under the conditions of concentration of ammonium hydroxide was 10 mol/L,the concentration of ammonium carbonate was 2 mol/L,the ratio of solid to liquid was 1:18 g/mL and reaction temperature was 90℃,the extraction of Mo reached 81.7%,and the extraction of Co reached 52.6%.(NH_(4))_(3)PO_(4)(MoO_(3))_(12)·4H_(2)O with petal-like morphology was produced from leaching solution by precipitation.In selective hydrogenation of naphthalene,catalyst prepared by calcined leaching residue with Cu and Ni impregnation had the same catalytic effect as that prepared by commercial alumina.
作者
孙晓雪
王德举
王宁
齐升东
尚城城
丛文洁
蒋翠翠
任杰
SUN Xiaoxue;WANG Deju;WANG Ning;QI Shengdong;SHANG Chengcheng;CONG Wenjie;JIANG Cuicui;REN Jie(State Key Laboratory of Green Chemical Engineering and Industrial Catalysis,Shanghai Research Institute of Petrochemical Technology Company Limited,SINOPEC,Shanghai 201208,China)
出处
《化学反应工程与工艺》
CAS
2023年第2期126-133,共8页
Chemical Reaction Engineering and Technology
基金
国家重点研发计划(2022YFA1503504)
国家自然科学基金区域创新发展联合基金(U20A20122)。
关键词
废弃钴钼催化剂
碱性浸出
沉淀
spent Co-Mo hydroprocessing catalyst
alkaline leaching
precipitation
