Abstract: A hydrocarbon conversion catalyst comprising a modified beta zeolite, an amorphous inorganic oxide and a hydrogenation component wherein the said catalyst support has an NH3-AI of less than 3.5 and/or an IEC-AI of less than 3.7.

Abstract: A process for preparing aromatic compounds, wherein a gaseous feed containing C.sub.6 to C.sub.20 hydrocarbons is reacted in the presence of a catalyst, which catalyst comprises as its catalytically active component a hydrotalcite-type material having in its uncalcined state the general formulaMe'(II).sub.z Me(II).sub.x Me(III).sub.y (CO.sub.3)(OH).sub.2(x+z)+3y-2.aqwith an X-ray diffraction (d003) greater than about 7.4 Angstroms, and whereinMe'(II) is at least one divalent metal selected from the Group comprising platinum, palladium, silver, ruthenium and iridium;ME(II) is at least one divalent metal selected from the Group comprising copper, cobalt, magnesium, manganese, nickel and zinc;ME(III) is at least one trivalent metal selected from the Group comprising aluminum, chromium and iron; andx, y and z are positive numbers satisfying the following relationships:(x+z)/y.gtoreq.0.5;0<z/y.ltoreq. 3; andx.gtoreq.0.

Abstract: A process for preparing aromatic compounds, wherein a gaseous feed containing C.sub.6 to C.sub.20 hydrocarbons is reacted in the presence of a catalyst, which catalyst comprises a metal from Group VIII of the Periodic Table loaded on a hydrotalcite-type support material having in its uncalcined state the general formulaMe(II).sub.x Me(III).sub.y (CO.sub.3)(OH).sub.2x+3y-2 . aqwith an x-ray diffraction (d003) greater than about 7.4 Angstroms, and whereinMe(II) is at least one divalent metal selected from the group comprising copper, magnesium, manganese, zinc and a metal from Group VIII of the Periodic Table;Me(III) is at least one trivalent metal selected from the group comprising aluminum, chromium and iron; andx and y are positive numbers satisfying the following relationship x/y.gtoreq.0.5.

Abstract: A crystalline aluminosilicate having its anhydrous state a formula expressed in terms of mol ratios as follows:xQ:0.01-0.1 M.sub.2/n O:0-0.8 Z.sub.2 O.sub.3 :SiO.sub.2 :0.0001-0.5 MeS,wherein:Q is an organic nitrogen compound;Z is aluminium, boron, gallium or mixtures thereof;x is between 0 and 0.5;M is at least one metal cation of valence n; andMe is at least one of the metals which form an insoluble sulfide compound.

Abstract: A synthetic, layered, crystalline aluminosilicate. The aluminosilicate has the general formula (expressed as moles of oxide ratios): (M.sub.2/n O).sub.x : (SiO.sub.2).sub.y : (Al.sub.2 O.sub.3).sub.z wherein M represents one or more n-valent cations selected from sodium, potassium and other cations capable of replacing sodium or potassium by ion-exchange. The ratio y/z is between 15 and 300. The ratio x/z is determined from the criterion of electron neutrality between anions and cations, and wherein the structural aluminum is tetrahedrally coordinated in the crystal lattice of the above formula. The aluminosilicates of the invention are used as catalysts for the preparation of higher hydrocarbons from raw material containing olefins or oxygenates. The aluminosilicates are prepared from a synthesis mixture comprising the following compounds and molar ratios: SiO.sub.2 /Al.sub.2 O.sub.3 : 5-500; M.sub.2/n O/SiO.sub.2 : 0.1-10; OH/SiO.sub.2 : 0.1-5; and H.sub.2 O/SiO.sub.2 : 5-200.