催化氧化高含硫废水锰基催化剂的制备及活性研究  

Preparation of manganese-based catalyst for catalytic oxidation of high sulfur-containing wastewater and study on its activity

作　　者：谭文捷[1] 李文轩[2] 唐海燕 马秀彪 王永强[2] TAN Wen-jie;LI Wen-xuan;TANG Hai-yan;MA Xiu-biao;WANG Yong-qiang(Petroleum Exploration and Production Research Institute,Sinopec Corp.,Beijing 102206,China;College of Chemistry and Chemical Engineering,China University of Petroleum(East China),Qingdao 266580,China;Sinopec Tianranqi Company,Beijing 100029,China)

机构地区：[1]中国石油化工股份有限公司石油勘探开发研究院,北京102206 [2]中国石油大学(华东)化学化工学院,山东青岛266580 [3]中国石油化工股份有限公司天然气分公司,北京100029

出　　处：《现代化工》2023年第4期101-105,112,共6页Modern Chemical Industry

基　　金：国家重点研发计划(2019YFC1805505)。

摘　　要：以α-MnO_(2)为活性组分、Ni为金属助剂,通过水热法合成了Ni-MnO_(2)/Al_(2)O_(3)催化剂,在对催化剂进行表征分析的基础上,研究了催化剂的活性及氧化机理。结果表明,通过Ni掺杂后催化剂对硫离子80 min内去除率由50%提高至95%;焙烧再生法可快速再生失活后的催化剂;Ni-MnO_(2)/Al_(2)O_(3)为介孔结构,比表面积高达323.4 m^(2)/g,O_(ads)/O_(latt)的比值为2.02,丰富的表面吸附氧和氧空位可以有效提高催化剂的活性;硫离子在氧化过程中生成的中间产物主要是S_(2)O_(3)^(2-),其次为SO_(4)^(2-)和SO32-。Ni-MnO_(2)/Al_(2)O_(3)catalyst is synthesized via hydrothermal method by usingα-MnO_(2)as active component and Ni as metal additive.Based on proceeding characterization and analysis on the catalyst,the activity and oxidation mechanism of the catalyst are investigated.The results show that within 80 minutes,the removal rate of sulfur ions over Ni doped catalyst increases to 95%from 50%that over undoped catalyst.The deactivated Ni-MnO_(2)/Al_(2)O_(3)catalyst can be regenerated rapidly by roasting regeneration method.Ni-MnO_(2)/Al_(2)O_(3)has a mesoporous structure with a high specific surface area of 323.4 m^(2)·g-1 and an O_(ads)/O_(latt)ratio of 2.02.Thanks to its abundant surface adsorbed oxygen and oxygen vacancies,the activity of the catalyst is effectively improved.The intermediate products generated during the oxidation of sulfur ions include mainly S_(2)O_(3)^(2-),followed by SO_(4)^(2-)and SO32-.

关 键 词：Ni-MnO_(2)/Al_(2)O_(3)催化剂 高含硫废水 催化氧化 水热法 

分 类 号：O643.36[理学—物理化学] X703[理学—化学]