Exxonmobil Chemical Patents Inc.

Exxonmobil Research and Engineering Company

Nicholas S Rollman

Wenyih Frank Lai

Christine Nicole Elia

Joshua I Cutler

Guang Cao

Chuansheng Bai

Hari Nair

Gordon Frederick Stuntz

William A Wachter

Brenda Anne Raich

Jeffrey T Elks

David O Marler

Jenna L Walp

Theodore E Datz

William W Lonergan

Mary T Van Nostrand

Wenyih F Lai

Disclosed are processes for conversion of a feedstock comprising Caromatic hydrocarbons to lighter aromatic products in which the feedstock and optionally hydrogen are contacted in the presence of the catalyst composition under conversion conditions effective to dealkylate and transalkylate said Caromatic hydrocarbons to produce said lighter aromatic products comprising benzene, toluene and xylene. The catalyst composition comprises a zeolite, a first metal, and a second metal, and is treated with a source of sulfur and/or a source of steam.

Heavy aromatics conversion processes and catalyst compositions used therein

A process for converting a feedstock comprising an organic compound to a conversion product by contacting said feedstock at organic compound conversion conditions with a catalyst comprising a mordenite zeolite having a mesoporous surface area of greater than 30 m/g and an average primary crystal size as measured by TEM of less than 80 nm.

Process for preparing a molecular sieve

Methods are provided for synthesis of various types of zeolites using synthesis mixtures that contain a dominant structure directing agent and one or more secondary structure directing agents. Advantageously, the secondary structure directing agents may substantially not alter the crystal structure and/or morphology of the crystals generated by a synthesis mixture in the presence of the dominant structure directing agent.

Zeolite synthesis with dominant and secondary templates

Disclosed are catalyst compositions and their use in a process for the conversion of a feedstock containing C+ aromatic hydrocarbons to produce light aromatic products, comprising benzene, toluene and xylene. The catalyst composition comprises a zeolite which comprises a MOR framework structure and a MFI and/or MEL framework structure, (b) at least one first metal of Group 10 of the IUPAC Periodic Table, and (c) optionally at least one second metal of Group 11 to 15 of the IUPAC Periodic Table. In one or more embodiments, the MOR framework structure comprises mordenite, preferably a mordenite zeolite having small particle size. The MFI framework structure preferably comprises ZSM-5, and the MEL framework structure preferably comprises ZSM-11.

Catalyst compositions and their use in transalkylation of heavy aromatics to xylenes

The present invention provides a mordenite zeolite having a mesopore surface area of greater than 30 m/g and an average primary crystal size as measured by TEM of less than 80 nm, and methods of making the mordenite zeolite.

The invention relates to a method of making a reinforced catalytic microporous and/or mesoporous bound composition comprising the steps of: providing a pre-formed catalytic crystalline material; mixing the catalytic crystalline material with water, a metal oxide binder, and a reinforcing glass fiber to form an extrudable composition; extruding the extrudable slurry under conditions sufficient to form the reinforced catalytic bound extrudate; and calcining the reinforced catalytic bound extrudate at a temperature and for a time sufficient to form a calcined reinforced catalytic bound catalyst. Advantageously, the reinforcing glass fiber can have a diameter from 5-100 microns and a length-to-diameter ratio from 300:1-3000:1 and can be present in an amount from about 1-50 parts, based on about 1000 parts combined of catalytic crystalline material and metal oxide binder.

Fiber reinforced zeolite extrudates with enhanced physical properties

Methods are provided for synthesizing crystals having a ZSM-5 framework structure from synthesis mixtures suitable for synthesis of ZSM-12 framework structure crystals in the absence of seed crystals with a ZSM-5 framework structure, such as in the absence of any seed crystals. For synthesis mixtures with a sufficiently high XO:YOratio, seeding a synthesis mixture with ZSM-5 seed crystals can result in production of pure phase ZSM-5 crystals with a new morphology. The morphology can include rod-like primary crystallites with a length of about 0.5 &#x3bc;m or less that are organized/aggregated into larger secondary crystal structures. The aggregation of the primary crystallites into a secondary crystal structure can allow for an unexpectedly large mesoporous surface area for the ZSM-5 crystals.

Synthesis of ZSM-5 crystals with improved morphology

Catalysts for experimentation are produced having a controlled matrix pore structure. The manufacturing process utilizes tape casting in the drying procedure in which a catalyst slurry is cast on a substrate and dried at a temperature of between about 50&#xb0; C. to 200&#xb0; C. for a period of time of about 0.1 to 1.0 hour. The dried catalyst particles can be removed from the substrate by several techniques, including scraping, burning, and deforming the substrate material. The resulting catalytic particles can be produced in an amount of about ca. 3 g to 300 g from slurries with volumes between 5 cc to 500 cc, which are suitable for small scale FCC reactors and for high throughput experimentation.

Drying device for producing small quantities of controlled particle size catalysts which are appropriate for use in fluidized bed operations such as fluid catalytic cracking

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Hamburg, PA, United States of America

Nicholas S Rollman