Air Products and Chemicals, Inc.

Saudi Basic Industries Corporation

W. R. Grace Co.-conn.

Dorai Ramprasad

Francis Joseph Waller

Ronald Martin Pearlstein

Guido Peter Pez

Ingrid Kristine Meier

William Eamon Carroll

Daryle H Busch

Gamini Ananda Vedage

John N Armor

John A Norman

Frederick Carl Wilhelm

Jaap Willem Van Hal

Hao Ding

Lenore Ann Emig

David Christopher Braddock

Anthony Gerard Barrett

Water tolerant Lewis acids are used in a process for the preparation of alkylene glycols by catalytic hydration of the corresponding alkylene oxide. The water tolerant Lewis acids can be a metal salt of a non-coordinating or weakly coordinating anion and a Group IIIB, rare earth or lanthanide, actinide or Group IVB cation. Optionally, carbon oxide may also be present. Examples of such water tolerant Lewis acids are scandium triflate, europium triflate, hafnium triflate, yttrium triflate, lanthanum triflate and ytterbium triflate. The catalyst may contain a coordinating anion instead, examples of which are scandium sulfate [Sc(SO)], scandium chloride [ScCl], scandium acetate [Sc(OAc)] and scandium nitrate [Sc(NO)]. The catalysts may also contain both a non-coordinating or weakly coordinating anion and a coordinating anion, examples of which are scandium triflate sulfate [Sc(CFSO) (SO)], scandium triflate chloride [Sc(CFSO)Cl], scandium triflate acetate [Sc(CFSO)(OAc)] and scandium triflate nitrate [Sc(CFSO)(NO)].

Process using water tolerant Lewis acids in catalytic hydration of alkylene oxides to alkylene glycols

This invention relates to an improvement in a process for the catalytic hydrogenation of aromatic amines and to the resultant catalyst. The basic process for hydrogenating both mononuclear and polynuclear aromatic amines comprises contacting an aromatic amine with hydrogen in the presence of a rhodium catalyst under conditions for effecting ring hydrogenation. The improvement in the ring hydrogenation process resides in the use of a rhodium catalyst carried on a lithium aluminate support. Often ruthenium is included.

Lithium aluminate as a catalyst support for hydrogenation of aromatic amines

Betaine is produced by the oxidation of a choline salt in the presence of a base and a supported noble metal catalyst at temperatures from about 20.degree. C. to 100.degree. C. and pressures from atmospheric to about 100 psi. This process is advantageous over prior processes for the production of betaine in that no amine halocarboxylate contaminants are produced by this reaction.

Preparation of solutions of betaine

Betaine is produced by the oxidation of a choline salt in the presence of a supported noble metal catalyst at temperatures from about 20.degree. C. to 100.degree. C. and pressures from atmospheric to about 100 psi. This process is advantageous over prior processes for the production of betaine in that no amine halocarboxylate contaminants are produced by this reaction.

Process for the preparation of aqueous solutions of betaine

This invention relates to a process for producing acetic anhydride by the reaction of methyl acetate, carbon monoxide, and hydrogen at elevated temperatures and pressures in the presence of an alkyl halide and a heterogeneous, bifunctional catalyst that contains an insoluble polymer having pendant quaternized phosphine groups, some of which phosphine groups are ionically bonded to anionic Group VIII metal complexes, the remainder of the phosphine groups being bonded to iodide. In contrast to prior art processes, no accelerator (promoter) is necessary to achieve the catalytic reaction and the products are easily separated from the catalyst by filtration. The catalyst can be recycled for consecutive runs without loss in activity. Bifunctional catalysts for use in carbonylating dimethyl ether are also provided.

Heterogeneous catalyst for the production of acetic anhydride from

This invention relates to a process for producing ethylidene diacetate by the reaction of acetic anhydride, acetic acid, hydrogen and carbon monoxide at elevated temperatures and pressures in the presence of an alkyl halide and a heterogeneous, bifunctional catalyst that is stable to hydrogenation and comprises an insoluble polymer having pendant quaternized heteroatoms, some of which heteroatoms are ionically bonded to anionic Group VIII metal complexes, the remainder of the heteroatoms being bonded to iodide. In contrast to prior art processes, no accelerator (promoter) is necessary to achieve the catalytic reaction and the products are easily separated from the catalyst by filtration. The catalyst can be recycled without loss in activity.

Heterogeneous catalyst for the production of ethylidene diacetate from

This invention relates to a process for producing ethylidene diacetate by the reaction of dimethyl ether, acetic acid, hydrogen and carbon monoxide at elevated temperatures and pressures in the presence of an alkyl halide and a heterogeneous, bifunctional catalyst that is stable to hydrogenation and comprises an insoluble polymer having pendant quaternized heteroatoms, some of which heteroatoms are ionically bonded to anionic Group VIII metal complexes, the remainder of the heteroatoms being bonded to iodide. In contrast to prior art processes, no accelerator (promoter) is necessary to achieve the catalytic reaction and the products are easily separated from the catalyst by filtration. The catalyst can be recycled for 3 consecutive runs without loss in activity.

Process for the production of ethylidene diacetate from dimethyl ether

A process for preparing a nitrated arene which comprises reacting an arene and nitric acid in the presence of a water tolerant Lewis acid catalyst under process conditions sufficient to form the nitrated arene and recovering the nitrated arene. Suitable Lewis acid catalysts are represented by the formula M.sup.n (A.sub.1).sub.x (A.sub.2).sub.n-x wherein

Nitration process which employs water tolerant Lewis acid catalysts

High capacity solid state compositions comprising cyanocobaltate complexes have been developed which are capable of reversibly chemically binding oxygen to selectively remove oxygen from an oxygen-containing fluid stream. The cyanocobaltate complexes which make up the compositions comprise a cobalt (II)-containing anion having from 3 to 5 cyanide ligands wherein at least one cyanide stretching mode, as measured by infrared spectroscopy, is between 2074 cm.sup.-1 and 2140 cm.sup.-1. Additionally, these complexes have a charge-balancing cation having a molecular volume in excess of 40.ANG..sup.3.

Process for reversibly binding oxygen

High capacity solid state cyanocobaltate complexes represented by the chemical formula:

Solid state cyanocobaltate complexes

High Capacity solid state cyanocobaltate complexes represented by the chemical formula:

Reversible oxygen sorbent compositions

A process is provided for selectively separating oxygen from an oxygen-containing fluid stream by bringing said fluid stream into contact with a high capacity solid state cyanocobaltate complex in a non-aluminosilicate environment represented by the chemical formula:

Process using cyanocobaltate complexes for removing oxygen from a stream

Cyanocobaltate oxygen adducts

The present invention is a cobalt complex having the structural formula: ##STR1## wherein each R.sub.1 is independently, a phenyl or a C.sub.1 -C.sub.6 alkyl group; each R.sub.2 is independently hydrogen, a phenyl, or a C.sub.1 -C.sub.6 alkyl group; R.sub.3 is either N-succinimido substituted with a C.sub.3 or greater hydrocarbon functionality at the carbon atoms .alpha. to the imido carbonyl carbons, or a carbonyl functionality having a C.sub.1 greater hydrocarbon substituent with the proviso that if said substituent is methyl, R.sub.2 cannot be hydrogen; and Y is o-phenylene, --CH.sub.2 --.sub.a, wherein 'a' is 2 or 3, --CH.sub.2 --.sub.b NR.sub.4 --CH.sub.2 --.sub.c, wherein 'b' and 'c' are independently 2 or 3 and R.sub.4 is hydrogen or a C.sub.1 -C.sub.12 alkyl group. These complexes have the ability to selectively and reversibly bind oxygen, thus making them useful components of oxygen separation membranes and absorbents.

Pillared cobalt complexes for oxygen separation

The present invention is a cobalt complex having the structural formula: ##STR1## wherein each R.sub.1 is independently hydrogen, a phenyl or a C.sub.1 -C.sub.6 alkyl group; each R.sub.2 is independently hydrogen or a C.sub.1 -C.sub.6 alkyl group; R.sub.3 is a C.sub.4 -C.sub.30 hydrocarbyl radical connecting the two carbonyl carbons; and Y is o-phenylene, --CH.sub.2).sub.a wherein 'a' is 2 or 3, --CH.sub.2).sub.b NR.sub.4 --CH.sub.2).sub.c, wherein 'b' and 'c' are independently 2 or 3 and R.sub.4 is hydrogen or a C.sub.1 -C.sub.12 alkyl group. These complexes have the ability to selectively and reversibly bind oxygen, thus making them useful components of oxygen separation membranes and absorbents.

Growing community of inventors

Allentown, PA, United States of America

Dorai Ramprasad