Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases p. 1704 - 1722 (1980)
Update date:2022-08-11
Topics:
Parayre, Patrick
Amir-Ebrahimi, Valia
Gault, Francois G.
Frennet, Alfred
The isomerization, dehydrocyclization and hydrogenolysis of 2,3-dimethyl(2-(13)C)pentane have been studied at 260 deg C over a 10percent Pt-Al2O3 catalyst of low dispersion, under various hydrocarbon and hydrogen pressures.Most of the isomerization products are accounted for either by a bond-shift mechanism or by a cyclic mechanism involving 1,2-dimethylcyclopentane intermediate.The absence of significant scrambling of the label suggests that the rate-determining step in isomerization is the skeletal rearrangement of highly dehydrogenated species.The positive order as a function of hydrogen which is found (0.8-1.2) cannot then be taken as evidence that desorption is rate-determining.It is best explained by assuming multisite adsorption of hydrocarbon and competition with hydrogen for chemisorption on the same sites.The results provide argument in favour of a reactive rather than dissociative-type adsorption step.
View More
Wuhan Jadechem International Trade Co.,Ltd.
website:http://www.jadechem-intl.com
Contact:+86-27-83527060
Address:Room 502,Building C11,Software new city No.8,Huacheng Avenue,East Lake High-tech development zone,Wuhan,Hubei,China
HANGZHOU TOYOND BIOTECH CO., LTD
Contact:+86-571-86965177
Address:No. 189, Fengqi East Road, Hangzhou, China
Contact:+86-21-61318535
Address:Building 29,No.2139 Xizha Road, Fengxian District, Shanghai
Laizhou City Laiyu Chemical CO.,Ltd
Contact:+86-535-2719337/2719339
Address:Chenggang road zhuyou laizhou City Shangdong China
website:http://www.hope-chem.com
Contact:86-21-58090396-805
Address:Floor 4, Building 5, No.588 Tianxiong Road, Zhoupu International Medical Zone, ShangHai, China
Doi:10.1007/BF00764804
(1989)Doi:10.1016/j.tet.2013.10.028
(2013)Doi:10.1016/j.jorganchem.2004.07.033
(2004)Doi:10.1021/ja01053a036
(1969)Doi:10.1016/j.mcat.2018.02.007
(2018)Doi:10.1039/P29960002245
(1996)
