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|1. (WO2016064590) ACTIVATION OF DEHYDROGENATION CATALYSTS|
|Applicants:||EXXONMOBIL CHEMICAL PATENTS INC.
|Inventors:||DAKKA, Jihad, M.
DECAUL, Lorenzo, C.
DE MARTIN, Gregory, J.
PAVLISH, Aaron, B.
KHEIR, Ali, A.
MOHR, Gary, D.
|Title:||ACTIVATION OF DEHYDROGENATION CATALYSTS|
In a process for dehydrogenating cyclohexylbenzene and/or alkyl-substituted cyclohexylbenzene compounds, a dehydrogenation catalyst comprising at least one Group 10 metal compound on a support is heated in the presence of hydrogen from a first temperature from 0°C to 200°C to a second, higher temperature from 60°C to 500°C at a ramp rate no more than 100°C/hour. The dehydrogenation catalyst is contacted with hydrogen at the second temperature for a time from 3 to 300 hours to produce an activated dehydrogenation catalyst. A feed comprising cyclohexylbenzene and/or an alkyl-substituted cyclohexylbenzene compound is then contacted with hydrogen in the presence of the activated dehydrogenation catalyst under conditions effective to produce a dehydrogenation reaction product comprising biphenyl and/or an alkyl-substituted biphenyl compound.