University of Delaware

American Cyanamid Company

E.i. Dupont De Nemours and Company

E. I. Du Pont De Nemours + Company

Henry C Foley

Ravindra K Mariwala

Loren D Brake

George C Sonnichsen

Michael P O'Toole

Brenda Anne Raich

Hyun J Jung

Hiei Ando

David S Lafyatis

Madhav Acharya

Michael Strano

Francis P Daly

David Richard Corbin

Leo E Manzer

Mark B Shiflett

Robert D Varrin, Jr

Davis S Lafyatis

Hans Agarwal

Sourav K Sengupta

The invention concerns nanoporous carbon membranes which have been synthesized by pyrolysis of selected polymers on porous substrates to produce thin mixed matrix carbon film with pores for separation of small molecules.

Mixed matrix nanoporous carbon membranes

Supported mesoporous carbon ultrafiltration membrane and process for making the same

Catalytic membranes comprising highly-dispersed, catalytically-active metals in nanoporous carbon membranes and a novel single-phase process to produce the membranes.

Nanoporous carbon catalytic membranes and method for making the same

Carbogenic molecular sieve devices comprising a porous support (e.g., a metal support) having a carbogenic molecular sieve membrane attached to one or more surfaces of the support so that small pores in the membrane are in communication with larger pores in the support and methods of making the devices.

Supported carbogenic molecular sieve membrane and method of producing

The present invention relates to an improved catalyst for the selective synthesis of monomethylamine (MMA) and dimethylamine (DMA) at the expense of trimethylamine (TMA) for a starting feed of methanol and/or dimethyl ether and ammonia. The current industrial catalyst for this process is a standard SiO.sub.2 /Al.sub.2 O.sub.3 material. The present invention combines this standard catalyst with microporous carbon molecular sieves (CMS) to form a composite material (i.e., a CMS/SiO.sub.2 /Al.sub.2 O.sub.3 material) with higher selectivity for the desired products MMA and DMA. The invention also relates to methods of making the improved catalyst and a process of using the improved catalyst material in the production of MMA and DMA.

CMS/SiO.sub.2 /Al.sub.2 O.sub.3 catalysts for improved selectivity in

A method for the preparation of a carbon molecular sieve capable of separating acid gases and fluorocarbons of the formula C.sub.a H.sub.b X.sub.c F.sub.d, wherein a is from 1 to about 6, b is from 0 to about 13, c is from 0 to about 13, d is from 1 to about 14, and X is a halogen; on the basis of shape selectivity and size exclusion. A precursor resin is heated at about 0.2.degree. C. per minute to about 500.degree. C. Then the resin is soaked at about 500.degree. C. for about 6 hours in flowing inert gas.

Carbon molecular sieve for the kinetic separation of acid gases and

A beam or flow of a reactive or metastable precursor such as a hydride or organometallic compound is created, and this beam or flow is used to treat (e.g. dope or coat or otherwise modify) a substrate, e.g. an advanced material such as a semiconductor layer, a photovoltaic cell, or a solar cell. The beam or flow can also be directed into a storage zone so that the precursor or precursors can be collected for future use. The beam or flow is created in an apparatus comprising at least three zones. Zone 1 is irradiated with microwave energy to generate a reactive gas rich in free radicals (e.g. rich in H.sup.., CH.sub.3.sup.., etc.) zone 2 (downstream from zone 1) is substantially free of microwave energy and contains a target which is impinged upon by the free radicals and becomes a source of the precursor; zone 3 (downstream from zone 2) is where the precursors are either collected for storage or are used to treat the substrate. In a typical apparatus of this invention, a feed gas such as H.sub.2 or CH.sub.4 is introduced into an elongated tube 50 which communicates with a microwave cavity 57 containing a microwave plasma. A reactive gas containing free radicals (and perhaps some ions) flows from cavity (57 to target 61, where the free radicals react with the target to form the precursor (e.g. a hydride such as silane). When the precursor enters zone 3 it can treat an advanced material 73, e.g. by decomposing into Si+2H.sub.2. The Si is deposited on substrate 73 and the liberated H.sub.2 is pumped away. The pumping system also keeps the interior of the apparatus under subatmospheric pressure, e.g. 0.1 to 10 torr.

Plasma-induced, in-situ generation, transport and use or collection of

This invention relates to catalyst supports, methods for making them, and to catalysts prepared therefrom. More particularly, it relates to binary oxidic catalyst support materials comprising titania and zirconia with high porosity and high surface area prepared by either a pH swing technique or a constant pH technique followed by calcination at a temperature below 450.degree. C., with such materials being impregnated with catalytically active metal components.

Catalyst comprising a titania-zirconia support and supported catalyst

High porosity titania-zirconia catalyst support prepared by a process

New catalysts comprising molybdenum on supports of defined wide-pore carbons are useful as catalyst for reaction of CO with H.sub.2 for synthesis of hydrocarbons. Catalysts may be made by depositing Mo(CO).sub.6 on the carbon support particles by vapor deposition or solution impregnation. The catalyst may also comprise a second metal, such as rhodium or palladium.

CO hydrogenation with molybdenum of wide-pore carbon catalysts

For the reaction of CO and H.sub.2 to produce hydrocarbons and alcohols, catalysts prepared by depositing carbonyls of molybdenum or tungsten and rhodium or ruthenium on alumina support and decomposing and oxidizing the carbonyls to oxides of the metals on the support.

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Newark, DE, United States of America

Henry C Foley