Scientific Design Company, Inc.

Other

Sd Lizenzverwertungsgesellschaft Mbh & Co Kg

Andrew D Schmitz

Nabil M Rizkalla

Arie Bortinger

Serguei Pak

William Crudge

A method for the epoxidation of an olefin comprising reacting a feed gas composition containing an olefin, oxygen, and a halocarbon moderator having a first moderator concentration Min the presence of an epoxidation catalyst at a first temperature T; increasing the first temperature to a second temperature T; and increasing the first moderator concentration to a second moderator concentration M, wherein the second moderator concentration is defined by:(1+)wherein the temperature has the units of degrees Celsius, and r is a constant factor which is in the range of from 0.001% to 100%.

Epoxidation process

The present invention is a device for determination of the presence of an installation space behind a ceiling covering for a retrofit recessed lighting fixture by way of a small probe hole. Specifically, the invention device comprises an longitudinal rotation handle with a top end and a bottom end defining a handle axis. Extending from the top end along the handle axis lies a first section of a narrow probe rod. The height of the first section exceeds the height of a retrofit recessed lighting fixture to be installed by at least the thickness of a ceiling covering through which it will be installed. At the end of the first section extends a second section perpendicular to the first section, where the second section comprises an insertion end which is pointed so that it can be pressed through the ceiling covering material to probe the space behind it.

Retrofit recessed lighting installation tool

The invention describes a process for producing a catalyst useful for the epoxidation of an olefin. More particularly, the invention pertains to a catalyst useful for the oxidation of ethylene to ethylene oxide. The catalyst comprises a solid support such as alpha-alumina, which has a catalytically effective amount of silver or a silver-containing compound, and a promoting amount of rhenium or a rhenium-containing compound, and a promoting amount of one or more alkali metals or alkali metal-containing compounds on the surface of the support. To produce a catalyst precursor. The catalyst precursor is contacted with an atmosphere comprising oxygen and steam, which atmosphere is substantially absent of an olefin, to hasten the attainment of peak selectivity in the process of oxidation of ethylene to ethylene oxide.

Activation of high selectivity ethylene oxide catalyst

The invention relates to the aqua-thermal treatment of an ethylene oxide catalyst carrier and to a silver catalyst prepared therefrom.

Ethylene oxide catalyst carrier preparation

A silver catalyst for ethylene oxidation to ethylene oxide is provided containing a promoter combination consisting of critical amounts of an alkali metal component and a sulfur component, the catalyst being essentially free of rhenium and transition metal components; optionally the catalyst contains a fluorine component.

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Hackensack, NJ, United States of America

Andrew D Schmitz