Celanese International Corporation

Other

Hoechst Celanese Corporation

Arkema Inc.

Intelligent Fusion Technology, Inc.

Celanese Chemicals Europe Gmbh

Tao Wang

Barbara F Kimmich

Jerry A Broussard

Ioan Nicolau

Leslie E Wade

Valery Sokolovskii

Alfred Hagemeyer

David M Lowe

Yumin Liu

Anthony F Volpe

Karin Yaccato

Jun Han

Bernhard Herzog

Victor Wong

Jeffery C Bricker

James E Rekoske

Dean E Rende

Masao Takayama

Jeffrey L Boike

Kouji Hara

Nobuyuki Aoi

Toan Nicolau

Genshe Chen

Khanh D Pham

Erik Philip Blasch

Olan Stanley Fruchey

Dan Shen

Zhonghai Wang

Roger L Roundy

Wei Song

Bin Jia

H Robert Gerberich

Xingping Lin

Xingyu Xiang

André Harmen Sijpkes

Roelandus Hendrikus Wilhelmus Moonen

Diane E Allen

Salvador Aldrett-Lee

Control of a mobile device is transferred to and from an operator. In one aspect, a specification for triggering manual control of the mobile device is accessed. A location is identified within a geographic region that exhibits characteristics defined by the specification. The location is represented in a navigation map and is associated with an operator trigger. As the mobile device approaches the location, a request for manual control is provided to the operator based on the operator trigger, and manual control is initiated.

Method for transferring control to an operator

A method for testing satellite signal receiver antenna is provided. The method includes: determining a satellite constellation state indicating status of a plurality of satellites in a satellite constellation; calculating, based on the determined satellite constellation state, initial positions of a plurality of satellite antennas that are used for emulating the satellite constellation; moving the plurality of satellite antennas to the initial positions of the plurality of satellite antennas; calibrating a phase delay of each of the plurality of satellite antennas; broadcasting, by the plurality of satellite antennas, satellite signals to test a satellite signal receiver antenna; determining a movement plan for the plurality of satellite antennas based on the satellite constellation state; and moving the plurality of satellite antennas based on the movement plan to emulate a propagation of the satellite constellation.

Methods and systems for testing satellite signal receiver antenna

A flexible, compact size, low power consumption, low cost, high performance software defined radio platform that can be used in different areas, including industrial applications, amateur radio, and academic research. The present invention is a processing platform that packs a complete computer inside a pocket size enclosure. The invention makes use of a graphic user interface and touch screen LCD display for interaction with a user. Additionally, the invention is also able to use a plurality of daughter cards for transmission or receiving of radio signals including a broad range of frequencies. With a plurality of different types of ports, the present invention is versatile in its ability to communicate with other devices.

General-purpose software defined radio platform

A layered composition which can be used in various processes has been developed. The composition comprises an inner core such as a cordierite core and an outer layer comprising a refractory inorganic oxide, a fibrous component and an inorganic binder. The refractory inorganic oxide layer can be alumina, zirconia, titania, etc. while the fibrous component can be titania fibers, silica fibers, carbon fibers, etc. The inorganic oxide binder can be alumina, silica, zirconia, etc. The layer can also contain catalytic metals such as gold and platinum plus other modifiers. The layered composition is prepared by coating the inner core with a slurry comprising the refractory inorganic oxide, fibrous component, an inorganic binder precursor and an organic binding agent such as polyvinyl alcohol. The composition can be used in various hydrocarbon conversion processes including production of vinyl acetate.

Layered composition and processes for preparing and using the composition

The present invention addresses at least four different aspects relating to catalyst structure, methods of making those catalysts and methods of using those catalysts for making alkenyl alkanoates. Separately or together in combination, the various aspects of the invention are directed at improving the production of alkenyl alkanoates and VA in particular, including reduction of by-products and improved production efficiency. A first aspect of the present invention pertains to a unique palladium/gold catalyst or pre-catalyst (optionally calcined) that includes rhodium or another metal. A second aspect pertains to a palladium/gold catalyst or pre-catalyst that is based on a layered support material where one layer of the support material is substantially free of catalytic components. A third aspect pertains to a palladium/gold catalyst or pre-catalyst on a zirconia containing support material. A fourth aspect pertains to a palladium/gold catalyst or pre-catalyst that is produced from substantially chloride free catalytic components.

Layered support material for catalysts

Materials for making apparatus and a method of inhibiting polymerization during manufacture, purification, handling and storage of subject ethylenically unsaturated monomers are disclosed. In particular, copper or metals containing copper, in the presence of oxygen, have inhibit undesired polymerization resulting in polymer fouling in apparatus used during the manufacture, purification, handling and storage of the monomers, such as acrylic acid, methacrylic acid, acrylic acid esters and methacrylic acid esters. The copper or copper alloys as described herein, in the presence of an oxygen-containing gas, exhibit self-inhibiting surface characteristics when used to make at least a portion of the apparatus to inhibit polymerization of the monomers in contact with the portion of the apparatus including such copper-containing metal.

Metal surfaces to inhibit ethylenically unsaturated monomer polymerization

Processes for preparing alkenyl alkanoates using a layered catalyst composition

Halide free precurors for catalysts

Rhodium containing catalysts

The present invention relates to a method of producing a catalyst or pre-catalyst suitable for assisting in the production of alkenyl alkanoates. The method includes contacting a modifier precursor to a support material to form a modified support material. One or more catalytic component precursors (palladium or gold) may be contacted to the modified support material. The atomic ratio of gold to palladium is preferably in the range of about 0.3 to about 0.90. The support materials with the catalytic component may then be reduced using a reducing environment. A composition for catalyzing the production of an alkenyl alkanoates including a modified support material with palladium and gold is also included within the invention. Catalysts of the present invention may be used to produce alkenyl alkanoates in general and vinyl acetate in particular and are useful to produce low EA/VA ratios while maintaining or improving COselectivity.

Modified support materials for catalysts

A process for the vapor phase preparation of vinyl acetate in the presence of a catalyst of 0.2 to 1.3% by weight of gold or a gold compound, 0.3 to 10% by weight of an alkali metal compound, 0.5 to 2.0% by weight of a palladium compound and 0.01 to 1% by weight of a lanthanoid compound.

Catalyst based on palladium, gold, alkali metal and lanthanoid and process for preparing vinyl acetate

The invention relates to a catalyst which contains palladium and/or compounds thereof, gold and/or compounds thereof, alkali metal compounds and at least one lanthanoid metal and/or compounds thereof. The invention also relates to the utilization of the catalyst in order to produce vinyl acetate from acetic acid, ethylene and oxygen or gases containing oxygen.

Catalyst based on palladium, gold, alkali, and lanthanoid, and a method for producing vinyl acetate

A catalyst for the production of vinyl acetate by reaction of ethylene, oxygen and acetic acid comprising a porous support on the porous surfaces of which is deposited catalytically effective amounts of metallic palladium and gold, said catalyst having been prepared by steps comprising impregnating a porous support, the porous surfaces of which contain a catalytically effective amount of a prereduced metallic palladium, with a solution of potassium aurate, and reducing the potassium aurate to a catalytically effective amount of metallic gold. Alternate embodiments are also disclosed.

Vinyl acetate catalyst comprising metallic palladium and gold prepared with potassium aurate

The invention relates to a catalyst which contains palladium and/or compounds thereof, cadmium compounds, alkali metal compounds and at least one lanthanoid metal. The invention also relates to the utilization of the catalyst in order to produce vinyl acetate from acetic acid, ethylene and oxygen or gases containing oxygen.

Catalyst based on palladium, cadmium, alkali and lanthanoids and a method for producing vinyl acetate

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Houston, TX, United States of America

Tao Wang