A series of catalysts such as Ru/SiO2, Co/SiO2 and Ru-Co/SiO2 were prepared by using the precuxsors of Ru, Co and Ru-Co carbony1 clusters. The catalytic performance in hydroformylation of ethylene showed that the acti...A series of catalysts such as Ru/SiO2, Co/SiO2 and Ru-Co/SiO2 were prepared by using the precuxsors of Ru, Co and Ru-Co carbony1 clusters. The catalytic performance in hydroformylation of ethylene showed that the activity and selectivity on a series of RuCo/Sio2 for C3-oxygenated products are much higher than those on Ru/SiO2 and Co/SiO2catalysts. The adsorption of CO on reduced Ru-Co/SiO2 eXhibited a hand at l68ocm-1,which was assigned to the C- and O- ended CO cheAnsorbed on Ru-Co/SiO2 catalysts.The IR spectra of the reaction of C2H4+CO+H2 with Ru-Co/SiO2 catalysts showed bands at 1582 and 1555cm-1, which may possibly be assigned to formyl and C3-acyl species on the surface, they play very important role for the formation of C3-oxygenates in hydroformylation of ethylene.展开更多
本文利用 HRuCo_3(CO)_(12)原子簇化合物制备了 Ru-Co/SiO_2双金属催化剂,并研究了它们在 CO 加氢反应中的催化性能。结果表明,若和由[Et_4N][HRu_3(CO)_(11)]、Co_4(CO)_(12)以及 Co_4(CO)_(12)+[Et4N][HRu_3(CO0)_(11)]和 CoCl2+RuCl_...本文利用 HRuCo_3(CO)_(12)原子簇化合物制备了 Ru-Co/SiO_2双金属催化剂,并研究了它们在 CO 加氢反应中的催化性能。结果表明,若和由[Et_4N][HRu_3(CO)_(11)]、Co_4(CO)_(12)以及 Co_4(CO)_(12)+[Et4N][HRu_3(CO0)_(11)]和 CoCl2+RuCl_3制备的 Ru/SiO_2、Co/SiO_2和 Ru/SiO_2+Co/SiO_2催化剂相比,由 HRuCO_3(CO)_(12)制备的催化剂在 CO 加氢反应中显示了很高的 CO 转化率和含氧化合物的选择性。通过光电子能谱方法可认为,具有近距离的 Ru-Co^(2+)双金属原子中心是 CO 加氢反应中形成含氧化含物的活性中心。展开更多
文摘A series of catalysts such as Ru/SiO2, Co/SiO2 and Ru-Co/SiO2 were prepared by using the precuxsors of Ru, Co and Ru-Co carbony1 clusters. The catalytic performance in hydroformylation of ethylene showed that the activity and selectivity on a series of RuCo/Sio2 for C3-oxygenated products are much higher than those on Ru/SiO2 and Co/SiO2catalysts. The adsorption of CO on reduced Ru-Co/SiO2 eXhibited a hand at l68ocm-1,which was assigned to the C- and O- ended CO cheAnsorbed on Ru-Co/SiO2 catalysts.The IR spectra of the reaction of C2H4+CO+H2 with Ru-Co/SiO2 catalysts showed bands at 1582 and 1555cm-1, which may possibly be assigned to formyl and C3-acyl species on the surface, they play very important role for the formation of C3-oxygenates in hydroformylation of ethylene.
文摘本文利用 HRuCo_3(CO)_(12)原子簇化合物制备了 Ru-Co/SiO_2双金属催化剂,并研究了它们在 CO 加氢反应中的催化性能。结果表明,若和由[Et_4N][HRu_3(CO)_(11)]、Co_4(CO)_(12)以及 Co_4(CO)_(12)+[Et4N][HRu_3(CO0)_(11)]和 CoCl2+RuCl_3制备的 Ru/SiO_2、Co/SiO_2和 Ru/SiO_2+Co/SiO_2催化剂相比,由 HRuCO_3(CO)_(12)制备的催化剂在 CO 加氢反应中显示了很高的 CO 转化率和含氧化合物的选择性。通过光电子能谱方法可认为,具有近距离的 Ru-Co^(2+)双金属原子中心是 CO 加氢反应中形成含氧化含物的活性中心。
