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AssigneeConoco Phillips Company
InventorsJoe D. Allison, Stephan Basso, Marc LeDoux, Cuong Pham-Huu, Harold A. Wright
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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° C., a pressure of less than 5 atmospheres absolute and a Weight Hourly Space Velocity (WHSV) of 0.1-10 h−1, with the external surface acidity of the crystalline aluminosilicate preferably selectively passivated by an amorphous silica layer. C6-plus aromatic hydrocarbons are preferably recovered from the process by means of an intermediate separation step.
A process for aromatization of methane, comprising
A process for aromatization of methane, comprising introducing a feed stream comprising at least 40 mole percent methane into at least two reactors in series at hydrocarbon conversion conditions comprising a temperature of from about 600 to about 800° C., a pressure less than about 5 atmospheres absolute, and a Weight Hourly Space Velocity (WHSV) of 0.1-10 h−1, contacting the feed stream with a catalyst composition comprising a metal-loaded crystalline aluminosilicate molecular sieve, and producing a reaction zone effluent stream comprising methane, hydrogen, and hydrocarbons, said hydrocarbons including at least about 30% C6 to C10 products,;
A process for aromatization of methane, comprising:
Dependencies are inferred from the claim text.