Journal of the Chemical Society - Faraday Transactions p. 3269 - 3274 (1995)
Update date:2022-08-17
Topics:
Jackson, S. David
Casey, Neil J.
The hydrogenation of propyne on a range of supported palladium catalysts has been investigated.The catalysts all showed 100percent selectivity to propene.A non-steady-state regime was observed when the catalysts were brought on line.During this period there was significant carbon laydown resulting in a surface Pd : C ratio of 1 : 3 with two of the catalysts tested.Once this level of laydown was reached, steady-state operation was achieved.In the steady state the amount of carbon laydown was reduced and activity was reproducible; the orders of reaction for propyne and dihydrogen were obtained.The order with respect to dihydrogen varied between 1.3 for the Pd/zirconia to 0.6 for the Pd/silica, while the order for propyne varied between 0.0 and 0.4.Analysis of the surface species by infrared spectroscopy revealed the presence of a horizontal and vertically bonded propyne, a di-sigma adsorbed propene and propylidyne.A mechanism for the reaction system has been postulated.
View MoreHuangshan Honghui Pharm Technology Co., Ltd.(expird)
website:http://www.honghuichem.com
Contact:18855958372
Address:Qingshan Wan No.1,Nanyuan Kou,SheXian Huangshan City,Anhui Province
Huludao Tianqi Shengye Chemical Co.,Ltd.
Contact:0086 429 2075777
Address:Area B,Shipbuilding Industry Park,Beigang District,Huludao City,Liaoning prov.,China
jintan yufan Medicine Raw materials Co.,Ltd.(expird)
Contact:86-519-82808282
Address:6th,Jincheng Huangzhuang
shanghai jinshan pharmaceutical Co.,Ltd
Contact:021-57363011，13681638167
Address:No. 7966 Tingfeng Road,Jinshan,Shanghai,China
Contact:0833-5590788/5590338/5590055
Address:Victory in the town of Red Star Village,Mount Emei City,industrial concentration area storage processing logistics parkpark
Doi:10.1039/c6pp00423g
(2017)Doi:10.1055/s-2003-37338
(2003)Doi:10.1021/jacs.8b05765
(2018)Doi:10.1039/c39940001023
(1994)Doi:10.1016/S0022-4596(03)00291-3
(2003)Doi:10.1016/j.tetlet.2020.152576
(2020)
