Tamai H, Ikeya T, Yasuda H
Faculty of Engineering, Hiroshima University, Higashi-Hiroshima, 739-8527, Japan
J Colloid Interface Sci. 1999 Oct 1;218(1):217-224. doi: 10.1006/jcis.1999.6412.
Novel fine polymer particles containing ultrafine Pd particles dispersed on the surface of core shell [core, poly(styrene-co-acrylic acid); shell, PrPO(4)]-type microspheres were prepared by the emulsifier-free emulsion polymerization of styrene with acrylic acid followed by the addition of PdCl(2) and a mixture of Pr(NO(3))(3) and NaH(2)PO(2). Pyrolysis of the resulting polymer particles at 900 degrees C provides organic polymer-free hollow particles (diameter, 473-586 nm) composed of Pd metal and PrPO(4). Hydrogenation of 1-hexene, trans-1,3-hexadiene, trans-1,4-hexadiene, and 1,5-hexadiene using the resulting Pd/PrPO(4) particles (reactant/Pd = 500 mol/mol) as catalyst revealed very high activity, especially for hydrogenations of 1-hexene and 1,5-hexadiene as compared with conventional Pd particles/Al(2)O(3) and Pd particles on powdered PrPO(4). Copyright 1999 Academic Press.
通过苯乙烯与丙烯酸的无乳化剂乳液聚合，接着加入氯化钯以及硝酸镨和次磷酸钠的混合物，制备出了新型精细聚合物颗粒，其中超细钯颗粒分散在核壳型[核，聚（苯乙烯 - 丙烯酸）；壳，磷酸镨（PrPO(4)）]微球的表面。将所得聚合物颗粒在900℃下热解，得到了由钯金属和磷酸镨组成的无有机聚合物的空心颗粒（直径473 - 586nm）。使用所得的钯/磷酸镨颗粒（反应物/钯 = 500摩尔/摩尔）作为催化剂对1 - 己烯、反式 - 1,3 - 己二烯、反式 - 1,4 - 己二烯和1,5 - 己二烯进行氢化反应，结果显示出非常高的活性，特别是与传统的钯颗粒/氧化铝以及负载在粉状磷酸镨上的钯颗粒相比，对1 - 己烯和1,5 - 己二烯的氢化反应活性更高。版权所有1999年学术出版社。
