Bp Chemicals Limited

Celanese International Corporation

Avantium International B.v.

André Harmen Sijpkes

John Glenn Sunley

Barbara F Kimmich

Evert Jan Ditzel

Tao Wang

Leslie E Wade

Peter John Van Den Brink

Roelandus Hendrikus Wilhelmus Moonen

Process for producing methyl acetate by carbonylating a dimethyl ether feed with carbon monoxide under substantially anhydrous conditions in the presence of a mordenite catalyst which has been ion-exchanged or otherwise loaded with at least one of silver and copper. The mordenite is also ion-exchanged or otherwise loaded with platinum in an amount in the range 0.05 to 10 mol % relative to aluminum.

Process for the carbonylation of dimethyl ether

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 system for the preparation and handling of multiple solid state samples, in particular for spectroscopic and microscopic analysis. The system comprises a sample holder assembly for multiple solid-state samples. The sample holder assembly comprises a sample holding body having first and second sides (), provided with multiple sample receiving open-ended bores () extending through said body between said first and second sides, each bore () having a first opening at the first side and a second opening at the second side. Furthermore a closure body () is provided adapted to be mounted against the second side of the sample holding body, said closure body () having a closure side adapted to rest against the second side of the sample holding body for closing off the second openings of the bores () in said sample holding body. Compacting () means are provided for compacting samples filled in bores () of the sample holding body as these bores are closed off on the second side by the closure body.

System for the preparation of multiple solid state samples, in particular for spectroscopic and microscopic analysis

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Almere, Netherlands

André Harmen Sijpkes