초록

The present invention relates to a zeolite catalyst, a process for using the catalyst for conversion of hydrocarbons, especially naphtha and LPG feedstock, and a process for preparing the catalyst.

대표청구항 ▼

[ What is claimed is:] [1.] A process for preparing a crystalline aluminosilicate, wherein said crystalline aluminosilicate is characterized by an x-ray diffraction pattern as follows:______________________________________ Relative Interplanar Intensity Spacing D(.ANG.) (I/I.sub.o) _________________

[ What is claimed is:] [1.] A process for preparing a crystalline aluminosilicate, wherein said crystalline aluminosilicate is characterized by an x-ray diffraction pattern as follows:______________________________________ Relative Interplanar Intensity Spacing D(.ANG.) (I/I.sub.o) ______________________________________ 12.09 M 11.26 W 10.15 W 9.81 W 7.48 W 6.09 W 4.77 W 4.73 W 4.30 VS 3.99 W 3.87 VS 3.73 M 3.66 W 3.50 M 3.38 M 3.21 W 3.06 W ______________________________________ rein W represents a weak relative intensity, M represents a medium relative intensity and VS represents a very strong relative intensity, the process comprising the steps of:forming a mixture comprising silica, alumina, water, a source of alkali metal, and a source of tetraethylammonium cation, wherein said mixture exhibits a composition in terms of mole ratios as follows:______________________________________ SiO.sub.2 /Al.sub.2 O.sub.3 >120 TEA.sup.+ /SiO.sub.2 0.2-0.95 H.sub.2 O/SiO.sub.2 20-300 OH.sup.- /SiO.sub.2 0.4-0.7 ______________________________________ rein TEA.sup.+ is said tetraethylammonium cation; andmaintaining said mixture at an elevated temperature so as to provide a crystalline aluminosilicate having a surface area of greater than or equal to about 300 M.sup.2 /g.