Conocophillips Company

Centre National De La Recherche Scientifique

Université Louis Pasteur De Strasbourg

Sicat

Stephan Basso

Cuong Pham-Huu

Joe D Allison

Harold A Wright

Marc J Ledoux

Zhen Chen

Steven R McDonald

Shang Y Chen

Charles R Rapier

Jean-Philippe Tessonnier

Cemal Ercan

Gauthier Wine

Angela R Bailey-Rivers

Marc LeDoux

The invention relates to a composite formed of a zeolite (such as ZSM-5 zeolite, &#x3b2;-zeolite and silicalite) deposited on a rigid support, wherein the rigid support comprises silicon carbide (SiC) with a specific surface area BET of at least 5 m/g. Preferably, the support is a &#x3b2;-SiC foam with a specific area of between 10 and 500 m/g. This composite may be used as a catalyst and/or a catalyst support for chemical reactions in a gas or liquid medium. For example materials of the present invention are useful for example, in connection with cracking, acylation, alkylation and/or isomerization of hydrocarbons.

Zeolite/SiC composites and their use in catalysis

Catalysts and methods useful for the production of olefins from alkanes via oxidative dehydrogenation (ODH) comprise at least one base metal and copper with an optional promoter. The catalyst preferably comprises a base metal and a copper-modified Groups 8, 9, or 10 metal on a support comprising alumina, zirconia, or mixtures thereof. Copper is preferably present in an amount of from about 0.1 to about 1.0 percent by weight of the total catalyst weight. The base metal preferably comprises manganese, chromium, gold, their corresponding oxides, or combinations thereof. The optional promoter preferably comprises platinum, palladium, iridium, rhodium, ruthenium, or any combinations thereof.

Copper modified catalysts for oxidative dehydrogenation

A molybdenum-loaded crystalline aluminosilicate molecular sieve that exhibits the MFI crystal structure and has a silica-to-alumina ratio of about 50:1 is useful for aromatizing a hydrocarbon feed stream. The crystalline aluminosilicate preferably has an external surface acidity selectively passivated by means of an amorphous silica layer. A process for the aromatization of methane comprises a one- or multi-step process that contacts a feed stream comprising at least methane with a catalyst composition comprising the preferred molecular sieve, at hydrocarbon conversion conditions that include a temperature of 600-800&deg; C., a pressure of less than 5 atmospheres absolute and a Weight Hourly Space Velocity (WHSV) of 0.1-10 h , with the external surface acidity of the crystalline aluminosilicate preferably selectively passivated by an amorphous silica layer. C -plus aromatic hydrocarbons are preferably recovered from the process by means of an intermediate separation step.

Catalyst and process for aromatic hydrocarbons production from methane

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Stephan Basso