Abstract: The hydrothermal stability of zeolites is improved by incorporating Group IB metal cations preferably Ag into the zeolite. The improved stability is useful in processes in which the zeolite is frequently exposed to water vapor at elevated temperature, for example, in processes where water is produced in the reaction or in the catalyst regeneration.

Abstract: There is disclosed a process for recovering olefin monomers, e.g., C.sub.3 -C.sub.10 alpha-olefins, from a vent gas of a vapor phase process for polymerizing olefins. The method comprises passing the vent gas, obtained by purging a resin produced in the polymerization process with an inert gas, such as nitrogen, into contact with an adsorbent to effect the adsorption of an olefin monomer. Subsequently, the adsorbed monomer is removed by contacting the adsorbent with a second monomer having lower molecular weight than the adsorbed monomer.

Abstract: A method is described for preparing a solid fuel in the form of a coal/liquid slurry for use in small furnaces. The fuel has a relatively uniform heating value of 10,000 to 14,000 Btu per pound and is prepared by crushing and grinding coal to less than 200 mesh, blending the coal fines with additives for SO.sub.x abatement, for ignition and oxidation promotion, and ash modifiers to improve the combustion quality of the fuel. The blended coal mixture is wetted with water and then slurried with oil, water or alcohol to form a thick slurry. The thick slurry is stabilized by proper selective of surfactants, polymers and other additives by way of interparticle bonding or bridging to provide a pumpable solid fuel that is stable in storage.