Abstract: The instant disclosure relates to a composition comprising potassium carbonate and calcium acetate, optionally along with sulfur containing compound. The composition of the present disclosure reduces coke formation during hydrocarbon cracking, particularly reduces surface coke and spalled coke during hydrocarbon cracking when compared to hydrocarbon cracking without the said composition. The disclosure further relates to a method for reducing formation and/or deposition of coke during pyrolysis or cracking of hydrocarbons.

Abstract: The present invention relates to a process for the selective production of para-diethyl benzene from a mixed aromatic feedstock containing ethyl benzene and at least one other aromatic compound selected from benzene, alkylated benzene having alkyl group with carbon number 1 to 6, mono-alkyl aromatics, dialkyl aromatics, trialkyl aromatics, tetraalkyl aromatics, pentaalkyl aromatics, hexaalkyl aromatics, containing side chains having 1 to 6 carbon atoms, and any mixtures thereof, the process comprising of (a) alkylating the feedstock under alkylating conditions, over a selectivated metallosilicate composite catalyst; and (b) recovering a product stream containing at least 95 wt % para-diethyl benzene, the product stream being substantially free from other isomers of diethylbenzene, C8 aromatics, C9 aromatics, C10+ heavy aromatics other than diethyl benzene isomers, sulphur, halogen, olefinic compound and carbonyl compounds.

Abstract: The present invention relates to a process for the selective production of para-diethyl benzene from a mixed aromatic feedstock containing ethyl benzene and at least one other aromatic compound selected from benzene, alkylated benzene having alkyl group with carbon number 1 to 6, mono-alkyl aromatics, dialkyl aromatics, trialkyl aromatics, tetraalkyl aromatics, pentaalkyl aromatics, hexaalkyl aromatics, containing side chains having 1 to 6 carbon atoms, and any mixtures thereof the process comprising of (a) alkylating the feedstock under alkylating conditions, over a selectivated metallosilicate composite catalyst; and (b) recovering a product stream containing at least 95 wt % paradiethyl benzene, the product stream being substantially free from other isomers of diethylbenzene, Ca aromatics, C9 aromatics, C10+ heavy aromatics other than diethyl beizene isomers, sulphur, halogen, olefinc compound and carbonyl compounds.