Catalysis Communications ( IF 3.7 ) Pub Date : 2018-08-12 , DOI: 10.1016/j.catcom.2018.08.010 H.A. Al-Wadhaf , V.M. Karpov , E.A. Katsman
Liquid phase hydrogenation of phenylacetylene was investigated on a series of 9.1 wt% Pd/C catalysts prepared from bis(η3-allyl)palladium complexes, as well as commercial Russian Pd/C catalyst (GIPKH-108). Pd/C catalysts were characterized by oxygen absorption and SEM. All prepared Pd/C catalysts demonstrated very high selectivity to styrene. The reduction temperature of palladium precursor has a significant effect on the palladium dispersity, but the substituent near terminal carbon atom of allyl ligand affects the dispersity more essentially than reduction temperature. Pd/C catalyst prepared from bis[(η3-allyl)palladium acetate] showed highest metal dispersity, activity and selectivity in the hydrogenation of phenylacetylene to styrene.
中文翻译:
活性和由二制备的碳承载的钯催化剂的选择性(η 3中苯乙炔氢化-烯丙基)钯络合物
苯乙炔的液相加氢在一系列的9.1进行了研究重量%的Pd /从双(η制备C催化剂3 -烯丙基)合钯络合物,以及商业俄罗斯Pd / C催化剂(GIPKH-108)。Pd / C催化剂的特征在于氧吸收和SEM。所有制备的Pd / C催化剂均显示出对苯乙烯的极高选择性。钯前体的还原温度对钯的分散性具有显着影响,但是烯丙基配体的末端碳原子附近的取代基比还原温度对分散性的影响更大。从双制备Pd / C催化剂[(η 3 -烯丙基)乙酸钯]在苯乙炔氢化为苯乙烯呈最高金属分散度,活性和选择性。