초록 ▼

A reforming process, selective for the dehydrocyclization of paraffins to aromatics, is effected using a large-pore molecular-sieve catalyst containing a uniformly distributed platinum-group metal component, and a tin component incorporated into the large-pore molecular sieve by secondary synthesis.

A reforming process, selective for the dehydrocyclization of paraffins to aromatics, is effected using a large-pore molecular-sieve catalyst containing a uniformly distributed platinum-group metal component, and a tin component incorporated into the large-pore molecular sieve by secondary synthesis. The use of this catalyst results in greater selectivity of conversion of paraffins to aromatics and in improved catalyst stability.

대표청구항 ▼

1. A process for the reforming of a hydrocarbon feedstock comprising contacting the feedstock with a reforming catalyst at reforming conditions to obtain an aromatics-rich effluent stream, the catalyst comprising:(a) a nonacidic large-pore molecular sieve having a unit empirical formula on an anhydr

1. A process for the reforming of a hydrocarbon feedstock comprising contacting the feedstock with a reforming catalyst at reforming conditions to obtain an aromatics-rich effluent stream, the catalyst comprising:(a) a nonacidic large-pore molecular sieve having a unit empirical formula on an anhydrous basis of mA:(SnwAlxSiy)O2; where A is at least one exchangeable cation selected from the group consisting of alkali and alkaline earth metals, "m" is the mole fraction of A and varies from about 0.01 to about 0.49, "w" is the mole fraction of tin and varies from about 0.01 to about 0.49, "x" is the mole fraction of aluminum and varies from about 0.01 to about 0.49, and "y" is the mole fraction of silicon and varies from about 0.50 to about 0.98; (b) a platinum-group metal component; and, (c) an non-acid inorganic-oxide binder.