Honeywell International Inc.

Alliedsignal Inc.

Occidental Chemical Corporation

Praxair Technology, Inc.

Robert L Bell

Alagappan Thenappan

Hsueh Sung Tung

David Nalewajek

Hisashi Kobayashi

Addison Miles Smith

Ronald F Spohn

David Elliott Bradley

Kuang-Tsai Wu

Jeffrey Warren McKown

George Piotrowski

John Hickey

Arthur W Francis

Hisahi Kobayashi

A combustion method in which heated flue gas heats a regenerator through which a mixture of fuel and flue gas is then passed to undergo endothermic reactions that produce syngas which is fed into a furnace together with a motive gas stream, wherein fuel is combusted with the motive gas stream to provide heat in alternate cycles.

Enhancement of thermochemical regeneration operation

A process for the production of C2-C4 hydrofluorocarbon, such as 1,1,1,3,3-pentafluoropropane, by contacting a non-fluorinated hydrochlorocarbon with a fluorinating agent, such as hydrogen fluoride, in a liquid catalyst system preferably comprising fluorinated superacid catalyst prepared from SbF, NbF, TaFor TaF/SnFand HF.

Method for preparing 1,1,1,3,3-pentafluoropropane

A process for the catalytic fluorination of hydrochlorocarbons and hydrochlorofluorocarbons in the liquid phase. The process is useful for fluorinating hydrochloropropanes, hydrochlorofluoropropanes, hydrochloropropenes and hydrochlorofluoropropenes and most particularly useful for fluorinating 1,1,1,3,3-pentachloropropane to 1,1,1,3,3-pentafloropropane. Suitable catalysts include (i) a pentavalent molybdenum halide; (ii) a tetravalent tin halide; (iii) a tetravalent titanium halide; (iv) a mixture of a pentavalent tantalum halide with a tetravalent tin halide; (v) a mixture of a pentavalent tantalum halide with a tetravalent titanium halide; (vi) a mixture of a pentavalent niobium halide with a tetravalent tin halide; (vii) a mixture of a pentavalent niobium halide with a tetravalent titanium halide; (viii) a mixture of a pentavalent antimony halide with a tetravalent tin halide; (ix) a mixture of a pentavalent antimony halide with a tetravalent titanium halide; (x) a mixture of a pentavalent molybdenum halide with a tetravalent tin halide; (xi) a mixture of a pentavalent molybdenum halide with a tetravalent titanium halide and (xii) a mixture of a pentavalent antimony halide with a trivalent antimony halide. Products of this process are useful in a variety of applications including solvents, blowing agents, and refrigerants.

Liquid phase catalytic fluorination of hydrochlorocarbon and hydrochlorofluorocarbon

The present invention provides catalysts and processes for the fluorination of hydrohalomethanes. In particular, the invention provides a process for the fluorination of hydrohalomethanes using hydrogen fluoride and a Lewis Acid catalyst. More specifically, catalysts and a process for the fluorination of dichloromethane are provided.

Catalyst and process for the fluorination of hydrohalomethanes

Liquid phase catalytic fluorination of hydrochlorocarbon and

Disclosed is a method of preparing an aromatic compound having the general formula ##STR1## where R is CF.sub.3, OCF.sub.3, OC.sub.2 F.sub.5, CN, NCO, or COCl, m is 0, 1, or 2, n is 0, 1, or 2, q is 1 or 2, and q+m+n is an integer from 1 to 5. A vapor is prepared of a substrate having the general formula ##STR2## and a chlorinating agent. The mixture is reacted at a temperature above the boiling point of the substrate but below its decomposition temperature. The amount of chlorinating agent is about 0.5 to about 2 times the amount stoichiometrically required to replace the nitro groups on the substrate with chlorine. Unreacted substrate and partially reacted substrate are condensed from the product mixture and are recycled. The substrate is preferably in contact with the chlorinating agent before it is vaporized.

Preparation of nuclear chlorinated aromatic compounds

Disclosed is a method of making an aromatic nitrile by reacting a benzotrichloride having the formula ##STR1## with a source of ammonia, where Z is R, X, ##STR2## --ROR, or --OR, R is alkyl from C.sub.1 to C.sub.20 or aryl from C.sub.1 to C.sub.25, X is halogen and n is 0 to 5. The reaction is performed in the presence of 0.01 to about 5 wt % of a catalyst having the general formula M.sub.P/2 O or MX.sub.p .cndot.mH.sub.2 O and about 0.01 to about 5 wt % water, as free water or water of hydration, based on the weight of the benzotrichloride, where M is beryllium, magnesium, calcium, strontium, or barium, m is 0 to 6, and p is the valence of M.

Method of making aromatic nitriles

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Amherst, NY, United States of America

Robert L Bell