Naphtha reforming, catalytic commercial

The studies reviewed here focus on Sn/Pt because of the opportunity afforded by the ordered alloys formed in this system for improving our basic understanding, as well as the commercial importance of Pt-Sn catalysts in naphtha reforming and their potential for other selective hydrogenation and dehydrogenation reactions. These studies combined detailed structural characterization of the alloy surfaces with UHV studies of adsorption and reaction of hydrocarbons and other small molecules, and measurements of the rate and selectivity of catalytic reactions at atmospheric pressure over these model catalysts. 

Supported metal clusters as small as those described in the preceding paragraphs are now important in catalytic technology. These catalysts are used commercially for naphtha reforming for production of aromatics [35,36]. The catalysts consist of platinum clusters in zeolite LTL made basic by the presence of K or K+ and Ba exchange ions [37-39]. 

Parera, J. Figoli, N. Reactions in the commercial reformer. In Catalytic Naphtha Reforming ... 

Antos, G. Moser, M. Lapinski, M. The new generation of commercial catalytic naphthareforming catalysts. In Catalytic Naphtha Reforming Antos, G., Aitani, A., Eds. Marcel Dekker New York, 2004 335. 

In the naphtha reforming process, a bifunctional metal-acid catalyst is used. During the commercial operation, coke is deposited on both catalytic functions producing their deactivation (refs. 1-3). When activity and selectivity are decreased to values where the operation is not convenient from the economical... 

Catalytic Reforming. Worldwide, approximately 30% of commercial benzene is produced by catalytic reforming, a process ia which aromatic molecules are produced from the dehydrogenation of cycloparaffins, dehydroisomerization of alkyl cyclopentanes, and the cycHzation and subsequent dehydrogenation of paraffins (36). The feed to the catalytic reformer may be a straight-mn, hydrocracked, or thermally cracked naphtha fraction ia the... 

TSR(l) [Trace sulphur removal] A process for removing sulfur compounds from naphtha so that they will not poison catalytic reformers. A proprietary solid absorbent is used. Developed by the Union Oil Company of California and first commercialized in 1983 at the Unocal oil refinery in San Francisco. 

Processes for the polymerization of hydrocarbon gases to motor fuel were developed to a commercial level in the early 1930 s. Thermal polymerization plants, employing temperatures of 900° to 1200° F. and pressures of 60 to 3000 pounds per square inch, were developed first, closely followed by catalytic units operating at temperatures of 280° to 475° F. and pressures of 200 to T 200 pounds per square inch. Currently, thermal polymerization finds its greatest application in combination with thermal reforming of naphtha. Catalytic polymerization has proved highly successful, as is indicated by the fact that one company alone has licensed over 150 plants to date. 

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