CATALYST COMPOSITION AND METHOD OF AROMATIC HYDROCARBON TRANSALKYLATION Russian patent published in 2009 - IPC B01J29/04 B01J35/10 B01J37/04 C07C6/12 C10G29/20 

FIELD: chemistry.

SUBSTANCE: present invention refers to catalyst compositions containing zeolite and inorganic binding agent with particular mechanical characteristics porosity and characteristics, and available as a catalysts in industrial fixed-bed catalytic reactors. There is disclosed composition containing zeolite and inorganic binding agent, where zeolite has crystal structure with holes formed by 12 tetrahedrons, while binding agent is aluminium γ-oxide. Herewith the composition described above is characterised by pore space derived from summing up mesoporous and macroporous components found in the specified catalyst composition, exceeding or equal 0.7 cm³/g, and at least 30% of said pore space volume consist of pores of diameter exceeding 100 nanometres. Additionally there are disclosed method of preparing catalyst composition specified above, method of aromatic hydrocarbon transalkylation involving aromatic hydrocarbon contacting to one or more polyalkylated aromatic hydrocarbon with the said catalyst composition added. Besides, there is disclosed method of preparing monoalkylated aromatic hydrocarbons involving: a) aromatic hydrocarbon contacting to C₂-C₄- olefin with acid catalyst added in such alkylation conditions, that reaction is enabled, at least partially in liquid phase, b) product separation to fraction containing aromatic hydrocarbon, fraction containing monoalkylated aromatic hydrocarbon, fraction containing polyalkylated aromatic hydrocarbons, and fraction containing heavy aromatic hydrocarbons, c) fraction containing polyalkylated aromatic hydrocarbons contacting to aromatic hydrocarbon with the said catalyst added, in such transalkylation conditions, that reaction is enabled, at least partially in liquid phase.

EFFECT: improved catalyst performance, both concerning its durability and productivity, improved mechanical characteristics of the catalyst, such as crushing strength and abrasion resistance, ensured high yield and high efficiency of transalkylation.

40 cl, 1 tbl, 6 dwg, 4 ex