文章摘要
宋爽爽,蒋丽红,王亚明,郑燕娥,包宇辉,申晨,杨晨.复合纳米载体TiO2-ZrO2负载NiB催化剂的制备及其加氢性能研究[J].精细化工,2019,36(11):
复合纳米载体TiO2-ZrO2负载NiB催化剂的制备及其加氢性能研究
Preparation of composite nanocarrier TiO2-ZrO2 supported NiB and its Catalytic Performance for Hydrogenation
投稿时间:2018-12-29  修订日期:2019-07-19
DOI:
中文关键词: 复合纳米载体  Ni-B  非晶态催化剂  松香  加氢
英文关键词: composite nanocarrier  Ni-B  amorphous catalyst  rosin  hydrogenation
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目);国家自然科学基金联合重点支持项目
作者单位E-mail
宋爽爽 昆明理工大学 931882994@qq.com 
蒋丽红 昆明理工大学 jlh65@163.com 
王亚明 昆明理工大学  
郑燕娥 昆明理工大学  
包宇辉 昆明理工大学  
申晨 昆明理工大学  
杨晨 昆明理工大学  
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中文摘要:
      采用溶胶-凝胶法制备复合载体TiO2-ZrO2,并通过金属诱导化学镀法制备负载型催化剂Ni-B/TiO2-ZrO2,以松香加氢为探针反应,通过单因素实验对载体制备过程、催化剂制备过程进行了优化,得到适宜的载体制备条件为:Zr/Ti物质的量比为0.6、焙烧温度为550℃、焙烧时间4h;催化剂制备条件:催化剂制备温度为50℃、微波升温时间为3min、n(Ni):n(B)=1:2。结果表明:该条件下制备的催化剂用于松香加氢反应,枞酸型树脂酸转化率达99%以上,且可重复使用7次。以XRD、XPS、TEM、BET为表征手段,对催化剂失活前后的结构与性能进行了分析,结果表明:Ni-B以非晶态的形式负载在TiO2-ZrO2载体上,分散性较好,平均粒径约为25 nm。而失活催化剂上Ni0、B0含量均下降,出现活性组分流失、氧化等现象,这可能是导致催化剂失活的主要原因。
英文摘要:
      A TiO2-ZrO2 composite carrier was prepared by sol-gel method. Subsequently, a supported Ni-B/TiO2-ZrO2 catalyst was prepared by metal induced electroless plating. The preparation processes of carrier and catalyst were optimized by single factor experiment. The suitable carrier preparation conditions were as follows: molar ratio of Zr/Ti 0.6, calcination temperature 550℃, and calcination time 4 h. The catalyst preparation conditions were as follows: microwave intervention temperature 50℃, microwave heating time 3 min, n(Ni): n(B)=1:2. The catalyst prepared under these conditions was used for the hydrogenation of rosin, and the conversion rate of abietic resin acids was over 99%. In addition, the catalyst could be reused for 7 times. XRD, XPS, TEM and BET were employed to characterize the structure and properties of the catalyst before and after deactivation. The results showed that Ni-B was supported on the TiO2-ZrO2 carrier in an amorphous state with good dispersion and average particle size of about 25 nm. However, the content of Ni0 and B0 on the deactivated catalyst decreased, and the active components were lost and oxidized, which might be the main cause of catalyst deactivation. Key words: composite nanocarrier; Ni-B; amorphous catalyst; rosin; hydrogenation
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