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
Zhengzhou Xinlian Chemical Tech Co. ,Ltd
Contact:0371-65771781 021-52042910
Address:H Part, Building I, No. 700 Gonglu Road, Pudong New Area, Shanghai
Shanghai Hongbang Medical Technology CO.,. Ltd
Contact:13671516988 /18917636693
Address:Room1, No67 Building, Yongde Road369, Wujing Town, Minhang Districy, Shanghai CIty, China.
NINGXIA DARONG CHEMICALS & METALLURGY CO.,LTD.
Contact:86-952-2179751
Address:Darong Road, Dawukou, Shizuishan, Ningxia 753001, China
Hefei Highzone Fine Chemical S&T CO.,LTD
Contact:86-0551-63663560
Address:room 1801 NO. 24 Shuguang RD.
Contact:
Address:ROOM 1715, No#345 Jin Xiang Road, Pudong District
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)
