Abstract: Compositions comprising a component containing (i) an acidic oxide support, (ii) an alkali metal and/or alkaline earth metal or mixtures thereof, (iii) a transition metal oxide having oxygen storage capability, and (iv) palladium promote CO combustion in FCC processes while minimizing the formation of NOx. The acidic oxide support preferably contains silica alumina. Ceria is the preferred oxygen storage oxide.

Abstract: Compositions comprising a component containing (i) an acidic oxide support, (ii) an alkali metal and/or alkaline earth metal or mixtures thereof, (iii) a transition metal oxide having oxygen storage capability, and (iv) palladium promote CO combustion in FCC processes while minimizing the formation of NOx. The acidic oxide support preferably contains silica alumina. Ceria is the preferred oxygen storage oxide.

Abstract: Compositions comprising a component containing (i) an acidic oxide support, (ii) an alkali metal and/or alkaline earth metal or mixtures thereof, (iii) a transition metal oxide having oxygen storage capability, and (iv) a transition metal selected from Groups Ib and/or IIb of the Periodic Table provide NOx control performance in FCC processes. The acidic oxide support preferably contains silica alumina. Ceria is the preferred oxygen storage oxide. Cu and Ag are preferred Group I/IIb transition metals. The compositions are especially useful in the cracking of hydrocarbon feedstocks having above average nitrogen content.

Abstract: Compositions comprising a component containing (i) an acidic oxide support, (ii) an alkali metal and/or alkaline earth metal or mixtures thereof, (iii) a transition metal oxide having oxygen storage capability, and (iv) a transition metal selected from Groups Ib and/or IIb of the Periodic Table provide NOx control performance in FCC processes. The acidic oxide support preferably contains silica alumina. Ceria is the preferred oxygen storage oxide. Cu and Ag are preferred Group I/IIb transition metals. The compositions are especially useful in the cracking of hydrocarbon feedstocks having above average nitrogen content.

Abstract: Compositions comprising a component containing (i) an acidic oxide support, (ii) an alkali metal and/or alkaline earth metal or mixtures thereof, (iii) a transition metal oxide having oxygen storage capability, and (iv) palladium promote CO combustion in FCC processes while minimizing the formation of NOx. The acidic oxide support preferably contains silica alumina. Ceria is the preferred oxygen storage oxide.

Abstract: Compositions comprising a component containing (i) an acidic oxide support, (ii) an alkali metal and/or alkaline earth metal or mixtures thereof, (iii) a transition metal oxide having oxygen storage capability, and (iv) a transition metal selected from Groups Ib and/or IIb of the Periodic Table provide NOx control performance in FCC processes. The acidic oxide support preferably contains silica alumina. Ceria is the preferred oxygen storage oxide. Cu and Ag are preferred Group I/IIb transition metals. The compositions are especially useful in the cracking of hydrocarbon feedstocks having above average nitrogen content.

Abstract: Compositions comprising a component containing (i) an acidic oxide support, (ii) an alkali metal and/or alkaline earth metal or mixtures thereof, (iii) a transition metal oxide having oxygen storage capability, and (iv) palladium promote CO combustion in FCC processes while minimizing the formation of NO.sub.x. The acidic oxide support preferably contains silica alumina. Ceria is the preferred oxygen storage oxide.

Abstract: Compositions comprising a component containing (i) an acidic oxide support, (ii) an alkali metal and/or alkaline earth metal or mixtures thereof, (iii) a transition metal oxide having oxygen storage capability, and (iv) a transition metal selected from Groups Ib and/or IIb of the Periodic Table provide NO.sub.x control performance in FCC processes. The acidic oxide support preferably contains silica alumina. Ceria is the preferred oxygen storage oxide. Cu and Ag are preferred Group I/IIIb transition metals. The compositions are especially useful in the cracking of hydrocarbon feedstocks having above average nitrogen content.

Abstract: Compositions comprising a component containing (i) an acidic oxide support, (ii) an alkali metal and/or alkaline earth metal or mixtures thereof, (iii) a transition metal oxide having oxygen storage capability, and (iv) a transition metal selected from Groups Ib and/or IIb of the Periodic Table provide NO.sub.x control performance in FCC processes. The acidic oxide support preferably contains silica alumina. Ceria is the preferred oxygen storage oxide. Cu and Ag are preferred Group I/IIb transition metals. The compositions are especially useful in the cracking of hydrocarbon feedstocks having above average nitrogen content.

Abstract: A carbon monoxide oxidation catalyst especially useful as a co-catalyst in fluid catalytic cracking operations is made by impregnating particulate alumina with lanthana and a small amount of platinum. Cerium must be excluded.

Abstract: A carbon monoxide oxidation catalyst especially useful as a co-catalyst in fluid catalytic cracking operations is made by impregnating particulate alumina with lanthana and a small amount of platinum. Cerium must be excluded.

Abstract: Cracking catalysts which yield higher octane gasoline than conventional cracking catalysts are made with large pore size zeolites such as zeolite Beta and zeolite ZSM-20 in the low sodium, H.sup.+ form. These zeolites are mixed with a matrix which contains at least a binder and formed into catalyst particles. These catalysts are especially suitable to be used in fluid catalytic cracking.

Abstract: Catalytic cracking catalysts which comprise molecular sieves/zeolites dispersed in an inorganic oxide matrix that includes pollucite.

Abstract: Cracking catalysts which yield higher octane gasoline than conventional cracking catalysts are made with large pore size zeolites such as zeolite Beta and zeolite ZSM-20 in the low sodium, H.sup.+ form. These zeolites are mixed with a matrix which contains at least a binder and formed into catalyst particles. These catalysts are especially suitable to be used in fluid catalytic cracking.

Abstract: In a method of repairing a defective tube in a tube-in-shell heat exchanger by inserting a tubular repair sleeve within the defective tube and sealingly bonding one end region of the sleeve to the tube and the other end region of the sleeve to the tube sheet in a manner such that the defect (for example a defective tube/tube sheet weld) is bridged, the improvement of providing a support against which the said one end of the sleeve can be explosively welded to the tube. The support comprises a mass of low melting point alloy cast around the tubes so as to provide support at the welding level for the defective tube as well as surrounding tubes. The support is removed after welding by remelting the alloy and causing the liquid alloy to run away. Inserts of high melting point metal can be included in the mass as reinforcement, and the casting can be effected in a removable box of which the tube sheet forms the base, the walls surrounding at least a part of the tube array which includes the defective tube.

Abstract: Alumina particle catalysts which can be used for auto emission control and especially as a three-way catalyst have increased performance. The alumina particles which are preferably spheroids have a low compacted bulk density of about 20 to 36 pounds per cubic foot and a smaller size on the order of less than 2.6 mm for the preferred spheroids. The spheroid embodiment also has a high crush strength. Because of the small size the ratio of the geometric surface area to the bulk volume (GSA/BV) is at least about 14 cm.sup.2 /cm.sup.3. These alumina particles are impregnated with a catalytically-effective amount of one or more platinum group metals such as platinum, palladium or rhodium and additional promoters can also be added. In the preferred embodiment the alumina particles have a GSA/BV ratio of from about 17 to 25 cm.sup.2 /cm.sup.3 for substantially improved performance.

Abstract: Zeolite containing catalysts and catalyst supports are prepared by forming and drying an aqueous slurry of zeolite, aluminum chlorhydrol and optimally clay to obtain particulate composites in which the zeolite component contains in excess of about 1 percent by weight alkali metal oxide. The particulate composites are calcined, and in some instances ion exchanged to obtain hard, attrition resistant catalytic particles.

Abstract: This invention is concerned with removing metals and sulfur from oil, preferably from residual oil, by contact with a novel catalyst. Said catalyst comprises a Group VIII metal and a Group VI metal deposited within an amorphous porous glass support of controlled pore size distribution.

Abstract: Cyclic hydrotreating of resids with low pressure, short term on-stream periods yields desirable products.

Abstract: Hydrocarbon conversion catalysts are prepared from synthetic faujasite Type Y zeolites which have an initial (as synthesized) silica to alumina ratio in excess of 5.6 and preferably above 5.8. The catalysts are highly active for the catalytic cracking of hydrocarbons and are particularly resistant to deactivation by high temperature steam in the presence of metals such as nickel and vanadium.