This invention relates to processes and systems for converting acyclic hydrocarbons to alkenes, cyclic hydrocarbons and/or aromatics, for example converting acyclic C.sub.5 hydrocarbons to cyclopentadiene in a reactor system. The process includes heating an electrically-conductive reaction zone by applying an electrical current to the first electrically-conductive reaction zone; and contacting a feedstock comprising acyclic hydrocarbons with a catalyst material in the electrically-conductive reaction zone under reaction conditions to convert at least a portion of the acyclic hydrocarbons to an effluent comprising alkenes, cyclic hydrocarbons, and/or aromatics.

A molecular sieve having the framework structure of ZSM-5 is described comprising crystals having an external surface area in excess of 100 m.sup.2/g (as determined by the t-plot method for nitrogen physisorption) and a unique X-ray diffraction pattern.

A molecular sieve having the framework structure of ZSM-5 is described comprising crystals having an external surface area in excess of 100 m.sup.2/g (as determined by the t-plot method for nitrogen physisorption) and a unique X-ray diffraction pattern.

A process for oxidative coupling of methane (OCM), comprising the steps of: (a) contactingoxygen and methane with an OCM catalyst, resulting in a reactor effluent comprising ethylene, ethane, methane, carbon dioxide and water; (b) cooling at least a part of the reactor effluent from step (a) to obtain a liquid stream comprising water and a gas stream comprising ethylene, ethane, methane and carbon dioxide; (c) removing carbon dioxide from at least a part of the gas stream from step (b) resulting in a gas stream comprising ethylene, ethane and methane; (d) recovering a stream comprising methane and a stream comprising ethane from the gas stream comprising ethylene, ethane and methane from step (c); (e) recycling at least a part of the stream comprising methane from step (d) to step (a); (f) converting ethane from the stream comprising ethane from step (d) to ethylene by oxidative dehydrogenation (ODH).

A process for oxidative coupling of methane (OCM), comprising the steps of: (a) contactingoxygen and methane with an OCM catalyst, resulting in a reactor effluent comprising ethylene, ethane, methane, carbon dioxide and water; (b) cooling at least a part of the reactor effluent from step (a) to obtain a liquid stream comprising water and a gas stream comprising ethylene, ethane, methane and carbon dioxide; (c) removing carbon dioxide from at least a part of the gas stream from step (b) resulting in a gas stream comprising ethylene, ethane and methane; (d) recovering a stream comprising methane and a stream comprising ethane from the gas stream comprising ethylene, ethane and methane from step (c); (e) recycling at least a part of the stream comprising methane from step (d) to step (a); (f) converting ethane from the stream comprising ethane from step (d) to ethylene by oxidative dehydrogenation (ODH).

Described herein are methods useful for preparing alkylaromatics.

Described herein are methods useful for preparing alkylaromatics.

Described herein are methods useful for preparing alkylaromatics.

The present invention relates to the integration of an alkylation unit for use in a hydrocarbon conversion process. More specifically, the present invention relates to the integration of a dehydrogenation unit and an alkylation unit and the placement of different isomerization units located off the deisobutanizer and the debutanizer.

The present invention relates to the integration of an alkylation unit for use in a hydrocarbon conversion process. More specifically, the present invention relates to the integration of a dehydrogenation unit and an alkylation unit and the placement of different isomerization units located off the deisobutanizer and the debutanizer.