Abstract: A two stage process for catalytically reforming a gasoline boiling range hydrocarbonaceous feedstock. The reforming is conducted in two stages wherein the first stage is operated in a moving-bed mode with the catalyst being continually regenerated, and the second stage is operated in a fixed-bed mode.

Abstract: Tin modified platinum-iridium catalysts provide high yields of C.sub.5 + liquid reformate in catalytic reforming, concurrent with high activity. In particular, the tin modified platinum-iridium catalysts are of unusually high selectivity, as contrasted with known iridium promoted platinum catalysts. The high selectivity is manifested in reforming a naphtha feed in a reactor charged to capacity with the catalyst, but particularly when used in the dehydrocyclization zone, or tail reactor of a series of reactors, while the lead reactors of the series contain a non tin-containing platinum catalyst, especially a platinum-iridium, or a platinum-rhenium catalyst. The tin modified platinum-iridium catalysts are also highly active, with only moderate loss in the high activity for which iridium stabilized platinum catalysts are known.

Abstract: A catalyst for reforming gasoline boiling range naphthas which catalysts are comprised of Pt and Sn on alumina and a modifier comprised of about 100 to 500 wppm Si and at least 10 wppm of one or more alkaline earth metals selected from Ca, Mg, Ba, and Sr wherein the total amount of modifier does not exceed about 5000 wppm.

Abstract: A process for reforming gasoline boiling range naphthas which process comprises use of catalysts comprised of Pt and Sn on alumina and a modifier comprised of at least about 100 wppm Si and at least 10 wppm of one or more alkaline earth metals selected from Ca, Mg, Ba, and Sr wherein the total amount of modifier does not exceed about 5000 wppm.

Abstract: Disclosed is an improved method for catalytically reforming a gasoline boiling range naphtha in a reforming unit comprised of a plurality of serially connected reactors, each containing a halogenated reforming catalyst. The level of halide is maintained in each reactor, particularly the downstream reactors by injecting into each reactor a mixture of water and halide at a ratio of 20:1 to 60:1, respectively.