Journal of the Chemical Society - Faraday Transactions p. 1453 - 1460 (1991)
Update date:2022-08-11
Topics:
Sim, Kyu S.
Hilaire, Lionel
Le Normand, Francois
Touroude, Raymonde
Paul-Boncour, Valerie
Percheron-Guegan, Annick
The hydregenation reactions of but-1-ene, buta-1,3-diene and but-1-yne have been studied on a series of REPd3 intermetallic compounds (RE = La, Ce, Pr, Nd, Sm) in a powdered form.Because the catalytic pretreatments were found to change activities and selectivities, bulk and surface characterisations were performed by XRD and XPS, before and after the catalytic tests.After 15 h pretreatment with H2 at 573 K, these catalysts showed stable and reproducible activities and selectivities with characteristic changes throughout the series when compared to Pd/pumice catalysts.LaPd3 was the most easily decomposed and its behaviour resembled that of a Pd/La2O3 catalyst. cePd3 was only partly decomposed, the surface becoming partically transformed to metallic palladium and the catalytically active cerium compound, producing a highly active catalyst of low selectivity.Conversely, pr(Nd,Sm)Pd3 were not decomposed in the bulk and they were more selective than Pd/pumice.Typical trends in the hydrogenation rate ratios of buta-1,3-diene to but-1-yne were also observed.Different electronic effects were proposed to explain the different catalytic behaviour of these palladium catalysts.
View MoreShandong Hongxiang Zinc Co., Ltd
Contact:086-0311-66187879
Address:DaWang developing zone
Weifang Dongxing Chitosan Factory
website:http://dxchitosan.lookchem.com/
Contact:13475651157
Address:Weifang city ,shandong province
ShangHai Ruiyi Medical Technology Co.,Ltd.
Contact:+86-21-54718086
Address:No951 Jianchuan RD，Minhang District
Tianjin Pharmacn Medical Technology Co.,Ltd.
Contact:86-22-60122566ext.866(English),23359620
Address:Green Industrial Base, 6 Haitaifazhan Sixth Rd., Huayuan Industrial Area, Tianjin, 300384, China
Contact:+86-13666670345
Address:Agricultural Development Zone, Haining, Jiaxing, Zhejiang
Doi:10.1006/jssc.2001.9461
(2002)Doi:10.1002/anie.200503484
(2006)Doi:10.1039/a802375a
(1998)Doi:10.1016/j.jorganchem.2008.04.027
(2008)Doi:10.1002/cbdv.200900311
(2010)Doi:10.1016/j.jorganchem.2009.12.024
(2010)
