Abstract: Crystalline metal silicates and metal borosilicate compositions exhibit useful catalytic properties when the reaction mixture from which they are prepared includes a metal whose oxide precipitates at a pH above 7 and an amount of urea or other compound which upon hydrolysis releases ammonia. The precipitated metal hydroxide is incorporated into the crystalline composition as it forms. These compositions exhibit the X-ray pattern of a ZSM-5 zeolite and have an aluminum content of less than 100 wppm and a composition expressed in terms of its oxides as follows:(0.2-80)R.sub.(2/n) O: (0.1-20) M.sub.(2/m) O: (0-40)B.sub.2 O.sub.3 : 100 SiO.sub.2 :(0-200)H.sub.2 Owhere R is tetramethyl ammonium cation, ammonium cation, hydrogen cation, an alkali metal cation, metal cation or mixtures thereof, n is the valence of R, M is a metal whose hydroxide precipitates at a pH above 7 and m is the valence of said metal. These crystalline silicates and borosilicates are usefully employed as catalysts in hydrocarbon conversions.

Abstract: Crystalline metal silicate compositions are prepared from a silica containing mixture which is substantially free of aluminum ions and which contains a chelating agent by digesting a reaction mixture comprising, a tetraalkylammonium compound, sodium hydroxide, a metal compound, an oxide of silicon, a chelating agent and water, with the reaction mixture containing less than about 100 ppm aluminum. Crystalline borosilicate compositions are of special interest. A method for activating the new crystalline compositions to enhance their usefulness for certain conversion processes is also disclosed.

Abstract: New crystalline silicate compositions are prepared from a silica containing mixture which is substantially free of aluminum ions and contains a source of choline by digesting a reaction mixture comprising a choline salt, sodium hydroxide, potassium hydroxide, an oxide of silicon, water and, optionally, a Group VIII metal salt with the reaction mixture containing less than about 1000 ppm aluminum. These crystalline silicates exhibit a distinctive X-ray diffraction pattern and have a composition as expressed in terms of its oxides, as follows: ##EQU1## where R is the organic nitrogen-containing cation derived from choline, M is an alkali metal ion, ammonium, hydrogen, a metal cation or mixtures thereof, m is the valence of M, Z is a Group VIII metal cation and z is the valence of said Group VIII metal cation. These crystalline silicates are usefully employed as catalysts in hydrocarbon conversions.

Abstract: Crystalline metal silicate compositions are prepared from a silica containing mixture which is substantially free of aluminum ions and which contains a chelating agent by digesting a reaction mixture comprising, a tetraalkylammonium compound, sodium hydroxide, a metal compound, an oxide of silicon, a chelating agent and water, with the reaction mixture containing less than about 100 ppm aluminum. Crystalline borosilicate compositions are of special interest. A method for activating the new crystalline compositions to enhance their usefulness for certain conversion processes is also disclosed.