Abstract: A catalyst system is described and claimed which is useful for various hydrocarbon conversion processes and is tolerant to large amounts of sulfur (about 30,000 ppm sulfur) in the feedstream. The catalyst comprises a first component which comprises at least one Group VIII metal dispersed on an inorganic oxide support and a second component comprising a metal phthalocyanine dispersed on an inorganic oxide support. Preferred Group VIII metals are platinum and palladium, while preferred metal phthalocyanines are cobalt or nickel phthalocyanine. Preferred inorganic oxide supports are molecular sieves, aluminas and mixtures thereof.

Abstract: Applicants have developed a catalyst for various hydrocarbon conversion processes which is tolerant to the presence of large amounts of sulfur (1000 ppm) in the feedstream. The catalyst consists of a molecular sieve support such as MeAPSO or zeolite Y that has dispersed thereon palladium and a modifier such as lanthanum.

Abstract: A process combination is disclosed to selectively upgrade naphtha in accordance with expected trends leading to more-aliphatic gasolines. Such gasolines contain lower concentrations of aromatics and have lower end points with concomitant reduced harmful automotive emissions. The present process combination converts the higher-boiling portion of the naphtha, yields isobutane and other isoparaffins which are particularly suitable for upgrading or blending, and reduces cyclics in intermediate processing steps.

Abstract: A process combination is disclosed to selectively upgrade naphtha to obtain an isoparaffin-rich product for blending into gasoline. A naphtha feedstock is subjected to ring cleavage to convert naphthenes to paraffins using a nonacidic catalyst followed by isomerization of paraffins to obtain an increased proportion of isoparaffins. Ring cleavage also may be effected on the product of isomerization and separation by fractionation or adsorption.

Abstract: A reforming process, selective for the dehydrocyclization of paraffins to aromatics, is effected using a catalyst containing multiple Group VIII (8-10) noble metals having different gradients within the catalyst and a nonacidic large-pore molecular sieve. The use of this bed of catalyst results in greater selectivity of conversion of paraffins to aromatics and improved catalyst stability, particularly in the presence of small amounts of sulfur.

Abstract: Applicants have developed a catalyst for various hydrocarbon conversion processes which is tolerant to the presence of large mounts of sulfur (1000 ppm) in the feedstream. The catalyst consists of a MeAPSO support that has dispersed thereon palladium and a modifier such as lanthanum or dysprosium.

Abstract: A reforming process, selective for the dehydrocyclization of paraffins to aromatics, is effected using a catalyst containing multiple Group VIII (8-10) noble metals having different gradients within the catalyst and a nonacidic large-pore molecular sieve. The use of this bed of catalyst results in greater selectivity of conversion of paraffins to aromatics and improved catalyst stability, particularly in the presence of small amounts of sulfur.

Abstract: A reforming process, selective for the dehydrocyclization of paraffins to aromatics, is effected using a bed of catalyst particles containing multiple Group VIII (8-10) noble metals having different gradients within the catalyst particles and a nonacidic large-pore molecular sieve. The use of this bed of catalyst particles results in greater selectivity of conversion of paraffins to aromatics and improved catalyst stability, particularly in the presence of small amounts of sulfur.

Abstract: A process combination is disclosed to selectively upgrade naphtha to obtain an isoparaffin-rich product for blending into gasoline. A naphtha feedstock is subjected to ring cleavage to convert naphthenes to paraffins using a nonacidic catalyst followed by isomerization of paraffins to obtain an increased proportion of isoparaffins.

Abstract: Reforming selective for the dehydrocyclization of paraffins to aromatics, is effected using a catalyst containing a platinum-group metal, a nonacidic large-pore molecular sieve, and a metal modifier which is positioned on the catalyst to be extrinsic to the pores of the molecular sieve. The use of this catalyst results in greater selectivity converting paraffins to aromatics and improved catalyst stability particularly when processing feedstocks containing small amounts of sulfur compounds.

Abstract: Propylamines are dehydrocyclized by non-acidic molecular sieves containing a Group VIII zerovalent metal to afford azacycloheptanes with good selectivity. The molecular sieves show less than 5% activity in a standard heptene-1 isomerization test. Performing the reaction in the presence of hydrogen and/or ammonia often is beneficial.

Abstract: A reforming process, selective for the dehydrocyclization of paraffins to aromatics, is effected using a bed of catalyst particles containing multiple Group VIII (8-10) noble metals having different gradients within the catalyst particles and a nonacidic large-pore molecular sieve. The use of this bed of catalyst particles results in greater selectivity of conversion of paraffins to aromatics and improved catalyst stability, particularly in the presence of small amounts of sulfur.

Abstract: A reforming process, selective for the dehydrocyclization of paraffins to aromatics, is effected using a catalyst containing a platinum-group metal, a nonacidic large-pore molecular sieve, and a metal modifier which is positioned on the catalyst to be extrinsic to the pores of the molecular sieve. The use of this catalyst results in greater selectivity converting paraffins to aromatics and improved catalyst stability particularly when processing feedstocks containing small amounts of sulfur compounds.

Abstract: A reforming process, selective for the dehydrocyclization of paraffins to aromatics, is effected using a bed of catalyst particles containing multiple Group VIII (8-10) noble metals having different gradients within the catalyst particles and a nonacidic large-pore molecular sieve. The use of this bed of catalyst particles results in greater selectivity of conversion of paraffins to aromatics and improved catalyst stability, particularly in the presence of small amounts of sulfur.