Kowalski Grzegorz, Pielichowski Jan, Grzesik Mirosław
Faculty of Food Technology, University of Agriculture in Krakow, Balicka 122, 30-149 Kraków, Poland.
Department of Polymer Science and Technology, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland.
ScientificWorldJournal. 2014 Feb 18;2014:648949. doi: 10.1155/2014/648949. eCollection 2014.
A study of polyaniline (PANI) doping with various cobalt compounds, that is, cobalt(II) chloride, cobalt(II) acetate, and cobalt(II) salen, is presented. The catalysts were prepared by depositing cobalt compounds onto the polymer surface. PANI powders containing cobalt ions were obtained by one- or two-step method suspending PANI in the following acetonitrile/acetic acid solution or acetonitrile and then acetic acid solution. Moreover different ratios of Co(II) : PANI were studied. Catalysts obtained with both methods and at all ratios were investigated using various techniques including AAS and XPS spectroscopy. The optimum conditions for preparation of PANI/Co catalysts were established. Catalytic activity of polyaniline cobalt(II) supported catalysts was tested in dec-1-ene epoxidation with molecular oxygen at room temperature. The relationship between the amount of cobalt species, measured with both AAS and XPS techniques, and the activity of PANI-Co catalysts has been established.
本文介绍了一项关于聚苯胺（PANI）与各种钴化合物（即氯化钴（II）、醋酸钴（II）和钴（II）salen）掺杂的研究。通过将钴化合物沉积到聚合物表面来制备催化剂。通过一步或两步法将聚苯胺悬浮在乙腈/醋酸溶液或乙腈中，然后再加入醋酸溶液，从而获得含钴离子的聚苯胺粉末。此外，还研究了不同的Co（II）:PANI比例。使用包括原子吸收光谱法（AAS）和X射线光电子能谱（XPS）等各种技术对通过两种方法以及所有比例获得的催化剂进行了研究。确定了制备聚苯胺/钴催化剂的最佳条件。在室温下，用分子氧对聚苯胺钴（II）负载型催化剂在1-癸烯环氧化反应中的催化活性进行了测试。已经建立了用AAS和XPS技术测量的钴物种含量与聚苯胺-钴催化剂活性之间的关系。
