电纺纤维负载钯纳米颗粒的制备及催化α-辛烯加氢性能的研究

Preparation of the supported palladium on nano-fiber and their use for catalytic hydrogenation of α-octene

通过电纺丝技术制备了聚合物纤维负载钯纳米颗粒催化剂并研究了其催化α-辛烯的加氢性能。聚丙烯腈（PAN）和苯乙烯-丙烯腈共聚物（PSAN）首先负载PdCl2，然后pd^2＋在水合肼的作用下还原成pd^0，并得到PAN-Pd和PSAN-Pd的DMF溶液，最后利用静电纺丝技术制备出了含有钯纳米颗粒的电纺纤维状催化剂，对所制备的催化剂进行了TEM表征，结果显示纤维直径分布范围为70-220nm，纳米钯颗粒直径在15～50nm之间。实验中利用催化剂对α-辛烯催化氢化的结果考察了其活性和重复使用性，还讨论了纤维直径，钯纳米颗粒和载体对催化加氢性能的影响。

Polymer electrospun-fibers containing palladium nano-particles were produced via electrospinning technique.Firstly, PdCl2 was supported on polyacrylonitrile and poly （styrene-co-acrylonitrile）, then Pd^2＋ was reduced to Pd^0, finally the catalyst was prepared via electrospinning technique .The catalysts were characterized by TEM, and fiber diameter was in a range of 70-220nm and palladium agglomerate was in a range of 15-50nm. The catalytic behavior was studied by the hydrogenation of α-octene at room temperature under hydrogen. In this paper, the relation of the activity of fibrous catalyst with the fiber diameter, palladium particles and polymer support were also discussed.