Pt/γ-AlOOH纳米棒复合催化材料的制备与性能  

Preparation and Catalytic Performance of Pt/γ-AlOOH Nanorods Catalytic Materials

作　　者：肖龙亚 陈诺 代志寅 文帅 汪杰 邓军阳 聂龙辉[1,2] XIAO Long-Ya;CHEN Nuo;DAI Zhi-Yin;WEN Shuai;WANG Jie;DENG Jun-Yang;NIE Long-Hui(Hubei Provincial Key Laboratory of Green Materials for Light Industry,Hubei University of Technology,Wuhan 430068,China;Collaborative Innovation Center of Green Light-Weight Materials and Processing,Hubei University o f Technology,Wuhan 430068,Chin)

机构地区：[1]湖北工业大学绿色轻工材料湖北省重点实验室,武汉430068 [2]湖北工业大学绿色轻质材料与加工协同创新中心,武汉430068

出　　处：《无机化学学报》2018年第8期1470-1476,共7页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.51572074);湖北省绿色轻质材料重点实验室开放课题(No.201710A12);大学生创新训练项目(No.201610500021)资助

摘　　要：水热法制备了γ-AlOOH纳米棒,再以此纳米棒为载体,通过浸渍-NaBH4还原法制备了Pt/γ-AlOOH催化剂,考察了Pt/γ-AlOOH室温催化氧化甲醛的性能及Pt负载量对催化性能的影响。通过XRD,XPS,TEM和N2吸附-脱附测试等手段对所制备的样品进行表征。研究结果表明:Pt/γ-AlOOH催化剂比Pt/γ-Al2O_3具有更高的催化活性,主要是由于前者表面具有丰富的羟基基团和高分散Pt纳米颗粒。Pt/γ-AlOOH催化剂的活性先随Pt含量(0.05%~0.5%(w/w))的增加而增加,最后基本保持不变。从催化活性和成本两方面考虑,0.2%(w/w)Pt为最佳负载量。γ-Al OOH nanrods were firstly prepared via a hydrothermal method, and then Pt/γ-Al OOH nanrods catalysts（PA） were obtained by a combined impregnation and Na BH4-reduction method using γ-Al OOH nanrods as supports. The obtained PA was used to catalytically oxidize formaldehyde（HCHO） at room temperature and the effect of Pt content on catalytic activity was also studied. The prepared samples were characterized by XRD,TEM, XPS and N2 adsorption-desorption isothermal test. The results show that PA reveals higher catalytic acitivity than Pt/γ-Al2 O_3, which is mainly due to the abundance of surface hydroxyls and high dispersion of Pt nanoparticles. The catalytic activities of PA firstly increase and then almost maintain unchanged with increasing of Pt content in the range of 0.05%~0.5%（w/w）. 0.2%（w/w） Pt is the optimum loading considering both catalytic activity and cost.

关 键 词：多相催化 甲醛氧化 Pt/γ-AlOOH纳米棒 

分 类 号：O643.3[理学—物理化学]