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1. EP3274318 - PRODUCTION OF BIPHENYL COMPOUNDS

Office European Patent Office
Application Number 15823117
Application Date 21.12.2015
Publication Number 3274318
Publication Date 31.01.2018
Publication Kind B1
IPC
C07C 2/74
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
2Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
74by addition with simultaneous hydrogenation
C07C 5/367
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
5Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
32by dehydrogenation with formation of free hydrogen
367Formation of an aromatic six-membered ring from an existing six-membered ring, e.g. dehydrogenation of ethylcyclohexane to ethylbenzene
C07C 13/28
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
13Cyclic hydrocarbons containing rings other than, or in addition to, six-membered aromatic rings
28Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof
C07C 15/14
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
15Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic part
12Polycyclic non-condensed hydrocarbons
14all phenyl groups being directly linked
CPC
C07C 2/74
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
2Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
74by addition with simultaneous hydrogenation
C07C 5/367
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
5Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
32by dehydrogenation with formation of free hydrogen
367Formation of an aromatic six-membered ring from an existing six-membered ring, e.g. dehydrogenation of ethylcyclohexane to ethylbenzene
C07C 2601/14
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
2601Systems containing only non-condensed rings
12with a six-membered ring
14The ring being saturated
Applicants EXXONMOBIL CHEMICAL PATENTS INC
Inventors SALCICCIOLI MICHAEL
DAKKA JIHAD M
SANGAR NEERAJ
DECAUL LORENZO C
KHEIR ALI A
Designated States
Priority Data 15171178 09.06.2015 EP
2015067112 21.12.2015 US
201562137996 25.03.2015 US
Title
(DE) HERSTELLUNG VON BIPHENYLVERBINDUNGEN
(EN) PRODUCTION OF BIPHENYL COMPOUNDS
(FR) PRODUCTION DE COMPOSÉS BIPHÉNYLE
Abstract
(EN)
In a process for producing biphenyl compounds, a Cn aromatic hydrocarbon may be hydroalkylated to give C2n cycloalkylaromatic compounds and byproduct Cn saturated cyclic hydrocarbons. The C2n cycloalkylaromatic compounds are dehydrogenated to provide the biphenyl compounds. The Cn saturated cyclic hydrocarbons may also be dehydrogenated back to the corresponding Cn aromatic hydrocarbon, which may be recycled to provide additional feed. Although both the intermediate C2n cycloalkylaromatic compounds and the byproduct Cn saturated cyclic hydrocarbons should be dehydrogenated, at least part of the dehydrogenation of the Cn saturated cyclic hydrocarbons should take place in the absence of C2n or greater hydrocarbons. Thus, dehydrogenation of the byproduct Cn saturated cyclic hydrocarbons should take place at least in part separately from dehydrogenation of the C2n cycloalkylaromatic compounds.

(FR)
Dans un procédé de production de composés biphényle, un hydrocarbure aromatique en Cn peut être hydroalkylé pour donner des composés cycloalkylaromatiques en C2n et des sous-produits hydrocarbures cycliques saturés en Cn. Les composés cycloalkylaromatiques en C2n sont déshydrogénés pour fournir les composés biphényle. Les hydrocarbures cycliques saturés en Cn peuvent également être déshydrogénés de manière à régénérer l'hydrocarbure aromatique en Cn correspondant, qui peut être recyclé pour fournir une charge d'alimentation supplémentaire. Bien que les composés cycloalkylaromatiques en C2n intermédiaires et les sous-produits hydrocarbures cycliques saturés en Cn doivent être déshydrogénés, au moins une partie de la déshydrogénation des hydrocarbures cycliques saturés en Cn doit se dérouler en l'absence d'hydrocarbures en C2n ou supérieurs. Ainsi, la déshydrogénation des sous-produits hydrocarbures cycliques saturés en Cn doit se dérouler, au moins en partie, séparément de la déshydrogénation des composés cycloalkylaromatiques en C2n.