以胶原纤维为炭源制备炭纤维负载钯纳米催化剂及其催化加氢特性  

Preparation of Pd Nanoparticles Catalyst Supported by Carbon Fiber and Its Catalytic Hydrogenation Performance Investigation Using Collagen Fiber as Carbon Source

作　　者：马骏[1] 毛卉[1] 廖洋[1] 廖学品[1] 石碧[1] 

机构地区：[1]四川大学制革清洁技术国家工程实验室,四川成都610065

出　　处：《四川师范大学学报（自然科学版）》2013年第1期97-101,共5页Journal of Sichuan Normal University（Natural Science）

基　　金：国家重点基础研究发展计划(2011AA08A108);四川省科技厅应用基础项目(2010JY0056);四川省教育厅青年基金(09ZB065)资助项目

摘　　要：以胶原纤维为炭源,将胶原纤维接枝杨梅单宁(CF-BT)吸附Pd2+,经炭化及氢气还原后制备了炭纤维负载Pd纳米催化剂(Pd/C).通过场发射扫描电镜(FESEM)、透射电镜(TEM)、X射线衍射(XRD)、X射线光电子能谱(XPS)等对该催化剂进行了表征.结果表明,所制备的Pd/C催化剂保留了胶原纤维规整的纤维状结构,Pd纳米粒子大小均匀且高度分散,平均粒径为2.92 nm.将该催化剂用于丙烯醇催化加氢反应,在308.0 K和1.0 MPa氢压下,丙烯醇转化速率(TOF)高达2 460 h-1,催化剂重复使用8次其催化活性基本不变,表现出了优良的重复使用性能.At present investigation, collagen fiber was used as carbon source, and Pd2＋ was first adsorbed on collagen fiber grafted with bayberry tannin （ CF-BT）, and then the fibrous Pd/C was obtained after carbonization and reduction treatment. The as - prepared catalyst was characterized by FESEM, TEM, XRD and XPS. It was observed that the Pd/C catalyst was actually in the fibrous state which originate from collagen fiber. The Pd nanoparticles with an average diameter of 2.92 nm were finely dispersed in the catalysts. Subsequently, the Pd/C catalyst was utilized in hydrogenation of allyl alcohol for the estimation of its catalytic activity. The turnover frequency （TOF） of allyl alcohol was 2 460 h- 1 at 308.0 K and 1.0 MPa pressure of H2. Moreover, the Pd/C catalyst exhibited excellent reusability, which can be reused 8 times without significant loss of catalytic activity.

关 键 词：胶原纤维 杨梅单宁 炭纤维 Pd C纳米催化剂 丙烯醇加氢 

分 类 号：O643.3[理学—物理化学]