Reforming process using monofunctional catalyst containing bismuth
AssigneesChevron Chemical Company, Idemitsu Kosan Co., Ltd.
InventorsRobert A. Innes, Michio Sugimoto, Tetsuya Fukunaga
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Abstract
A catalytic reforming process is disclosed using a catalyst containing a Group VIII metal, low amounts of bismuth, and a zeolite L. The catalyst is a non-acidic, monofunctional reforming catalyst. Preferably, the catalyst contains one or more halogens. Preferably, the feed includes C.sub.8 hydrocarbons. The addition of small amounts of bismuth increase or substantially maintain catalyst stability. Unexpectedly low dealkylation rates are achieved using the catalyst while reforming to produce aromatics, especially to produce xylenes such as paraxylene.
Claims7
A process for reforming a hydrocarbon feed to obtain aromatics, comprising contacting the feed, under catalytic reforming conditions, with a monofunctional reforming catalyst comprising platinum, 0.01 to 0.25 atoms of bismuth per atom of platinum, and a zeolite L.
Dependencies are inferred from the claim text.