초록 ▼

Crystalline silica-titania catalyst compositions, optionally containing magnesium, are disclosed; the titanium is introduced through the use of organo-titanate chelates wherein the titanium has a coordination number of at least 5. The compositions are used in acid-catalyzed reactions such as alkylat

Crystalline silica-titania catalyst compositions, optionally containing magnesium, are disclosed; the titanium is introduced through the use of organo-titanate chelates wherein the titanium has a coordination number of at least 5. The compositions are used in acid-catalyzed reactions such as alkylation reactions.

대표청구항 ▼

Method of making a catalyst useful in hydrocarbon conversion reactions comprising (a) combining about one part of an aqueous sodium silicate solution containing about 12% to about 13% SiO2, at a SiO2 to Na2O weight ratio of about 3.22 with about 0.94 parts of a second, clear aqueous solution of an o

Method of making a catalyst useful in hydrocarbon conversion reactions comprising (a) combining about one part of an aqueous sodium silicate solution containing about 12% to about 13% SiO2, at a SiO2 to Na2O weight ratio of about 3.22 with about 0.94 parts of a second, clear aqueous solution of an organo-titanate chelate containing 0.18 to 0.32% titanium as TiO2 and wherein the titanium has a coordination number of at least 5, 0.24 to 0.26 gram-equivalents per liter of a tetra-alkyl ammonium halide or hydroxide, up to 0.12 gram-equivalents per liter of a magnesium salt, and about 3.3 to about 3.5 gram-equivalents per liter of sodium chloride, to form a gel, (b) crystallizing the gel by extended hydrothermal treatment, (c) washing the crystallized gel, (d) calcining the washed crystallized gel, and (e) removing residual alkali metal therefrom. A calcined crystalline titania-silica catalyst having a molar ratio of 0.015 to 0.04 TiO2:1.0 SiO2 and an X-ray diffraction pattern characterized by peaks as follows: ________________________________ -2q0.015 to 0.04 TiO2:1.0 SiO2 and 0.08 to 0.17 MgO, and an X-ray diffraction pattern characterized by peaks as follows: ________________________________ -2q