比较了醋酸溶液中过渡金属(Fe、Co、Ni、Ce、Cu、La、Zr或Cr)掺杂MCM-41催化过氧化氢氧化四氢萘合成α-四氢萘酮的转化率和选择性,发现其中Co/MCM-41的催化活性最好. 探讨了Co/MCM-41作催化剂时反应温度、反应时间、催化剂用量等对四氢萘氧化的转化率和形成四氢萘酮选择性的影响,确定了较优的反应条件:m(四氢萘)∶ m(催化剂)=12.5∶ 1;反应温度T=383 K,反应时间8 h. 四氢萘的转化率达94.7%,α-四氢萘酮的选择性达到70.3%. 在反应体系中,Co/MCM-41是一种固体非均相催化剂. 催化剂Co/MCM-41可回收重复使用3次,催化活性基本不变.
The conversions and selectivities of the oxidation of tetralin to α-tetralone in acetic acid with H_2O_2 as oxidant over transition metals(Fe, Co, Ni, Ce, Cu, La, Zr and Cr) loaded MCM-41 were compared. An excellent conversion of tetralin and high selectivity of α-tetralone were also obtained when Co/MCM-41 was used. The effects of reaction temperature, reaction time and catalyst concentration on the catalyst performance were examined in order to optimize the conversion of tetralin and selectivity of α-tetralone. A selectivity of 70.3% of tetralin to α-tetralone was obtained at 94.7% conversion 1; reaction temperature=383 K, reaction time=8 h. Co/MCM-41 act as a solid heterogeneous catalyst in the reaction system and it can be recycled three times without losing its activity to a great extent.
参考文献
| [1] | Ramesh S,Framck R M.J Chem Soc,Chem Commum[J],1989,(14):960 |
| [2] | Chung Y M,Kang K K,Ahn W S,Lim P K.J Mol Catal A:Chem[J],1999,137(1-3):23 |
| [3] | Ahn W S,Zhong Y P,Abrams C F,Lim P K.J Phys Chem B[J],1997,101(4):596 |
| [4] | ZHANG Qiao-Hong(张巧红),XU Jie(徐杰),MA Hong(马红),YANG Guan-Yu(杨贯羽),CHEN Chen(陈晨),MIAO Hong(苗虹).Sci Technol Eng(科学技术与工程)[J],2006,6(18):2 870 |
| [5] | YANG Wei-Jun(阳卫军),CAO Jun(曹军),YIN Bi-Jun(尹碧军),GUO Can-Cheng(郭灿城).Chinese J Catal(催化学报)[J],2008,29(8):741 |
| [6] | Razi R,Abedini M,Kharat A N,Amini M M.Catal Commun[J],2008,9(2):245 |
| [7] | Shaikh R A,Chandrasekar G,Biswas K,Choi J S,Son WJ,Jeong S Y,Ahn W S.Catal Today[J],2008,132(2):52 |
| [8] | Corma A.Chem Rev[J],1997,97(6):2 373 |
| [9] | CHANG Fang(常芳),LI Wan-Yi(李晚谊),YANG Sheng-Chun(杨盛春),PENG Li(彭丽),WANG Jia-Qiang(王家强).Chinese J Appl Chem(应用化学)[J],2007,24(7):757 |
| [10] | Li B,Wang J,Fu J,Wang J,Zou C.Catal Commun[J],2008,9(10):2 000 |
| [11] | Yao W,Chen Y,Min L,Fang H,Yan Z,Wang H,Wang J.J Mol Catal A:Chem[J],2006,246(2):162 |
| [12] | Mahendiran C,Sangeetha P,Vijayan P,Sardhar Basha S J,Shanthi K.J Mol Catal A:Chem[J],2007,275(1):84 |
| [13] | Sooknoi T,Limtrakul J.Appl Catal A:Gen[J],2002,233(2):227 |
| [14] | Wang J,Fang H,Li Y,Li J,Yan Z.J Mol Catal A:Chem[J],2006,250:75 |
| [15] | Sheldon R,Wallau M,Arends I,Schuchardt U.Acc Chem Res[J],1998,31(8):485 |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%