浸渍改性NiO/ACF催化剂低温催化还原再生水中溶解氧的研究  

Study on catalytic reduction of dissolved oxygen in reclaimed water at low temperature over impregnation modified NiO/ACF catalyst

作　　者：袁杰 梁美生[1] 王洁[1] YUAN Jie;LIANG Mei-sheng;WANG Jie(College of Environmental Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学环境科学与工程学院,山西太原030024

出　　处：《现代化工》2021年第9期139-144,共6页Modern Chemical Industry

基　　金：山西省重点研发计划项目(201903D321082)。

摘　　要：为消除城市再生水输送过程中溶解氧(DO)对管道的腐蚀,利用等体积浸渍法制备了NiO/ACF催化剂,并用于催化碳酰肼还原再生水中溶解氧。在反应温度为45℃条件下,考察了活性金属种类、负载量和焙烧温度对催化除氧性能的影响并探讨了催化反应机理,同时利用BET、XRD和SEM对催化剂进行表征分析。结果表明,选用Ni为最佳活性金属,在ACF上成功负载了金属Ni,引入了活性组分NiO,且没有破坏ACF的有序结构。金属Ni质量分数为10%、焙烧温度为350℃时,NiO/ACF催化剂表现出优异的催化性能,反应55 min后DO去除率可以达到91.11%。Dissolved oxygen( DO) is known as the prime reason causing pipeline corrosion in the process of urban reclaimed water transportation. The preparation of high-efficiency catalysts becomes an important topic in the study of catalytic deoxygenation. NiO/ACF catalyst is prepared via the incipient-wetness impregnation method for catalytic reduction of DO in reclaimed water by carbohydrazide. At a reaction temperature of 45℃,the influences of the impregnated component,the loading amount,and the calcining temperature on the catalytic performance of NiO/ACF are investigated,and the reaction mechanism is explored.BET,XRD,and SEM technologies are employed to characterize the prepared catalysts. It is shown that Ni is the best active metal and it has successfully been loaded on ACF. Active component NiO is added without destroying the ordered structure of ACF. NiO/ACF catalyst exhibits excellent catalytic performance when the mass fraction of metal Ni is 10% and the calcination temperature is at 350℃,over which the removal rate of DO can reach 91. 11% after 55 min of reaction.

关 键 词：NiO/ACF 催化还原 再生水 碳酰肼 浸渍改性 

分 类 号：X703.1[环境科学与工程—环境工程]