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1篇 您的检索式：作者名="Tracey A.Robson"

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		题名	作者	年代	出处	被引量
	1	Kinetics of the Oxidative Dehydrogenation of Isobutane over Cr_2O_3/La_2(CO_3)_3显示文摘The oxidative dehydrogenation (ODH) of isobutane over Cr2o3/La2(CO3)3 has been investi-gated in a low-pressure Kundsen cell reactor,under conditions where the kinetics of the primary reaction steps can be accurately determined .By heating the catalyst at a constant rate from 150-300℃ ,temper-ature fluctuations due to non-equilibrium adsorption are minimized ,The evolved gas profiles show that ODH to isobutene and water is a primary reaction pathway,while carbon dioxide ,which forms from the catalyst during reaction,is the only other product,This CO2 evolution may enhance the activity of the catalyst ,Isobutene formation proceeds with the participation of lattice oxygen from the Cr2O3/La2(CO3)3 catalyst The intrinsic Arrhenius rate constant for the ODH of isobutane is k(s^-1)=10^11.5±2.2exp{-((55±5)-△Hads kJmol^-1)/RT} The small pre-exponential factor is expected for a concerted mechanism and for such a catalys with a small surface area and limited porosity.	Yanping Sun Tracey A.Robson Trevor C.Brown	2002	Journal of Natural Gas Chemistry2002，11，1：	1

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