ZrO_2负载Ru─Fe双金属簇及其单金属簇上CO加氢反应及TPDE研究

Study of CO Hydrogenation Reaction on ZrO 2 Supported Ru Fe Bimetallic and Their Monometallic Catalysts and TPDE of Supported Complexes

测定了ＺｒＯ２负载的由不同前体得到的Ｒｕ－Ｆｅ双金属及其单金属催化剂的ＣＯ加Ｈ２反应活性。结果表明，ＺｒＯ２负载的由Ｒｕ２Ｆｅ（ＣＯ）１２或ＲｕＦｅ２（ＣＯ）１２获得的Ｒｕ－Ｆｅ双金属催化剂较负载Ｒｕ３（ＣＯ）１２、Ｆｅ２（ＣＯ）９及其混合簇催化剂以及由ＲｕＣｌ３、Ｆｅ（ＮＯ３）３制备的常规双金属催化剂具有高得多的ＣＯ加氢活性。用程序升温分解（ＴＰＤＥ）方法研究了ＺｒＯ２负载的Ｒｕ３（ＣＯ）１２，Ｆｅ２（ＣＯ）９及其混合簇催化剂的脱羰基过程。结果表明，除脱附作用外，负载络合物的羰基在Ａｒ中ＴＰＤＥ主要歧化生成ＣＯ２，在Ｈ２中ＴＰＤＥ主要加氢生成ＣＨ４。

The catalytic activity for CO hydrogenation reaction of ZrO 2 supported Ru Fe bimetallic catalysts and the respective monometallic catalysts derived from various precursors was determined.It was shown that ZrO 2 supported Ru Fe bimetallic clusters obtained from Ru 2Fe(CO) 12 or RuFe 2(CO) 12 displayed much higher activity in the hydrogenation of CO than that of supported Ru 3(CO) 12 ,Fe 2(CO) 9 and their mixed metal clusters,and that of conventional catalysts prepared from RuCl 3 and Fe(NO 3) 3 The decarbonylation of ZrO 2 supported Ru 3(CO) 12 ,Fe 2(CO) 9 and their mixed cluster catalysts was investigated with temperature programmed decomposition (TPDE) method.The results indicated that besides desorption,the carbonyl of supported complexes was mainly dispropotionated to form CO 2 in Ar,whereas it was chiefly hydrogenated to form CH 4 in H 2.