A process for the conversion of mixed lower alkanes into aromatics which comprises first reacting a mixed lower alkane feed comprising at least propane and ethane in the presence of an aromatization catalyst under reaction conditions which maximize the conversion of propane into first stage aromatic reaction products, separating ethane from the first stage aromatic reaction products, reacting ethane in the presence of an aromatization catalyst under reaction conditions which maximize the conversion of ethane into second stage aromatic reaction products, and optionally separating ethane from the second stage aromatic reaction products.

Process for the conversion of lower alkanes to aromatic hydrocarbons

The present invention provides an integrated process for producing ethylene and aromatic hydrocarbons, specifically benzene, which comprises: (a) contacting a mixed lower alkane feed with an aromatic hydrocarbon conversion catalyst to produce a product mixture which is comprised of aromatic reaction products including benzene, unreacted ethane and non-aromatic products, (b) separating and recovering the benzene and any other aromatic reaction products, (c) separating and recovering the ethane, and (d) introducing the ethane into a cracker to produce ethylene.

Process for the conversion of lower alkanes to aromatic hydrocarbons and ethylene

Alkylaromatic hydrocarbons are dealkylated in a short cycle process characterized by a reaction period of 30-180 seconds followed by a regeneration period of 90-540 seconds--thus permitting attainment of improved conversion and yield of desired product.

Steam dealkylation process

The instant invention relates to a novel hydrocracking process wherein carbon-carbon bonds are ruptured and carbon-hydrogen bonds are formed in the presence of hydrogen and a catalyst comprising platinum, iridium and rhodium supported on an inorganic refractory oxide This process relates to the dealkylation of alkyl aromatics to form lower molecular weight aromatics, for example, alkylbenzenes such as ethylbenzene, xylene, toluene, etc may be converted to benzene in the process of the instant invention The process can also be used to convert a gas-oil fraction to gasoline by converting the higher molecular weight constituents of the gas-oil fraction to lower molecular weight products

Hydrocracking process with tri-metallic catalyst

Polycyclic aromatic hydrocarbons are treated with steam in the presence of catalyst, typically containing oxides of nickel, potassium, chromium, and aluminum, to form aromatic products containing a lesser number of aromatic rings.

Steam reforming of polycyclic hydrocarbons

ALKYL AROMATIC HYDROCARBONS, FOR EXAMPLE, TOLUENE ARE DEALKYLATED TO YIELD BENZENE AND HYDROGEN IN THE PRESENCE OF STEAM AND, OPTIONALLY, HYDROGEN OVER A GROUP VIII NOBLE METAL CATALYST SUPPORTED ON ALPHA-ALUMINA. THE HYDROGEN GENERATED IS USED TO SUPPLY AT LEAST PART OF THE HYDROGEN REQUIREMENT FOR A HYDRODEALKYLATION PROCCESS, OPTIONALLY CARRIED OUT STIMULTANEOUSLY WITH THE STEAM DEALKYLATION PROCESS IN A COMMON REACTOR.

Sampson R

Papers

Production of benzene