制备了0.5%Pd/C催化剂和含钯担载双金属催化剂3%Cu-0.5%Pd/C, 3%Mo-0.5%Pd/C, 3%Ni-0.5%Pd/C, 3%Co-0.5%Pd/C, 3%Mn-0.5%Pd/C, 用XRD法和XPS法进行了表征. 结果表明, 室温下, 以KBH4还原剂制备的含钯担载双金属催化剂, 在碘苯与丙烯酸的Heck偶合反应中, 催化活性高于Pd/C(0.5 h的转化率高, 完成反应所需时间少), 显示出添加贱金属的协同效应. 其中, 3%Mo-0.5%Pd/C显示出最高的催化活性, 在0.5 h时的转化率(67.4%)和收率(52.6%)比0.5%Pd/C分别高54.5%和42.2%, 完成反应的时间最短, 表明钼的协同效应最高.
参考文献
| [1] | Biffis A;Zecca M;Basato M.Palladium metal catalysts in Heck C-C coupling reactions[J].Journal of Molecular Catalysis A:Chemical,2001(173):249. |
| [2] | Suresh I;Vinay V T.The novel use of Ni,Cu and Mn heterogeneous catalysts for the Heck reaction[J].Journal of Molecular Catalysis A:Chemical,2000(157):275. |
| [3] | Yang Yuanfa;Zhou Renxian;Zhao Shaofen et al.The vinylation of aaryl iodides catalyzed by silica-supported poly-γ-aminopropylsilica Ni,Cu and Co complexes[J].Catalysis Letters,2003,85(1-2):87. |
| [4] | Reetz MT.;Wanninger K.;Breinbauer R. .SUZUKI AND HECK REACTIONS CATALYZED BY PREFORMED PALLADIUM CLUSTERS AND PALLADIUM/NICKEL BIMETALLIC CLUSTERS[J].Tetrahedron letters: The International Journal for the Rapid Publication of Preliminary Communications in Organic Chemistry,1996(26):4499-4502. |
| [5] | Tsai SH.;Liu YH.;Wu PL.;Yeh CS. .Preparation of Au-Ag-Pd trimetallic nanoparticles and their application as catalysts[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2003(5):978-980. |
| [6] | Fengyu Zhao;Kenji Murakami;Masayuki Shirai.Recyclable homogeneous/heterogeneous catalytic systems for Heck reaction through reversible transfer of palladium species betveen solvent and aupport[J].Journal of Catalysis,2000(194):479. |
| [7] | Wall V M;Eisenstadt A;Ager D J et al.Heck reaction and cinnamic acid synthesis by heterogeneous catalysis[J].Platinum Metals Review,1999,43:138. |
| [8] | Rajendra Srivastava;N. Venkatathri;D. Srinivas;Paul Ratnasamy .Pd-SAPO-31, an efficient, heterogeneous catalyst for Heck reactions of aryl chlorides[J].Tetrahedron letters: The International Journal for the Rapid Publication of Preliminary Communications in Organic Chemistry,2003(18):3649-3651. |
| [9] | Zhao Fengyu;Shirai Masayuki;Ikushima Yutaka et al.The leaching and re-deposition of metal species from and onto conventional supported palladium catalysts in the Heck reaction of iodobenzene and methyl acrylate in N-methylpyrrolidone[J].Journal of Molecular Catalysis A:Chemical,2002,180:211. |
| [10] | 宣天鹏,章磊,黄芹华.稀土铈对化学沉积Co-Ni-B合金镀层结构和性能的影响[J].稀有金属,2003(03):399-402. |
| [11] | 何凤姣,戴高鹏,黄宇宁,雷同鑫.水溶液中电沉积Fe-Zr-B纳米合金[J].稀有金属,2003(05):583-588. |
| [12] | 戴维林,曹勇,范康年,邓景发.纳米Ni-Co-B非晶态合金抗氧化行为的原位XPS研究[J].高等学校化学学报,2003(03):473-476. |
| [13] | 黄耀曾;钱延龙.金属有机化学进展[M].北京:化学工业出版社,1987:281. |
| [14] | Juan A;Moro C C;Damiani D E .Molybdenum oxide-supported Pd catalysts;characterization and evaluation in the syngas reaction[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,1997,122:257. |
| [15] | Martin Schmal;M. A. S. Baldanza;M. Albert Vannice .Pd-_xMo/Al_2O_3 Catalysts for NO Reduction by CO[J].Journal of Catalysis,1999(1):138-151. |
| [16] | 魏昭彬;辛勤;盛世善 等.炭担载的Mo和CoMo加氢脱硫催化剂[J].催化学报,1995,16(05):359. |
| [17] | Maria Ferrari;Bernard Delmon;Paul Grange .Influence of the active phase loading in carbon supported molybdenum-cobalt catalysts for hydrodeoxygenation reactions[J].Microporous and Mesoporous Materials,2002(3):279-290. |
| [18] | Erhan Aksoylu A;Misirli Zulal;Onsan Ilsen Z .Interaction between nickel and molybdenum in Ni-Mo/Al2O3 catalysts:I CO2 methanation and SEM-TEM studies[J].Applied Catalysis A:General,1998,168(02):385. |
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