Abstract: A catalytic reactor, used as the ignition stage for a multi-stage combustor, is made by the following method. Alternate sides of a metal strip are first coated with a combustion catalyst, in such a manner that at any point on the strip, one side is coated and the other side is not coated. Then the strip is folded back and forth upon itself in a zigzag pattern, to produce the reactor. The strip has corrugations which keep adjacent portions of the strip spaced apart when the strip has been folded. The reactor made by this method has an extended useful life, in part because it does not become so hot that the catalyst becomes deactivated.

Abstract: Porous bodies are produced which are suitable for use as supports for catalysts, including living cells, such as bacteria and which are upset resistant to acids and bases. The bodies have a significantly large average pore diameter of about 0.5 to 100 microns, (i.e. 5,000 to 1,000,000 .ANG.) and a total pore volume of about 0.1 to 1.5 cc/g with the large pores contributing a pore volume of from about 0.1 to 1.0 cc/g. The bodies are made by preparing a mixture of ultimate particles containing a zeolite and one or more optional ingredients such as inorganic binders, extrusion or forming aids, burnout agents, or a forming liquid, such as water. In a preferred embodiment, the ultimate particles are formed by spray drying.

Abstract: Porous bodies are produced which are suitable for use as supports for catalysts, including living cells, such as bacteria and which are upset resistant to acids and bases. The bodies have a significantly large average pore diameter of about 0.5 to 100 microns, (i.e. 5,000 to 1,000,000 .ANG.) and a total pore volume of about 0.1 to 1.5 cc/g with the large pores contributing a pore volume of from about 0.1 to 1.0 cc/g. The bodies are made by preparing a mixture of ultimate particles containing a zeolite and one or more optional ingredients such as inorganic binders, extrusion or forming aids, burnout agents, or a forming liquid, such as water. Incorporated into the support is activated carbon which provides improved properties. In a preferred embodiment, the ultimate particles are formed by spray drying.

Abstract: A bioremediation support for the support of microorganisms used in the biotreatment of an aqueous waste stream or contaminated vapor is made of a low-density siliceous glassy material. This material has a cellular or frothy texture, large pores of greater than 1,000 Anstrom units in diameter dispersed throughout the material, a high macropore volume in pores of greater than 1,000 .ANG. of more than 0.3 cc/cc and a BET surface area of greater than 10 m.sup.2 /g. A preferred material is pumice.

Abstract: A synthetic zeolite, designated zeolite GZS-11, is made having a molar composition expressed by the formula:[x M.sub.2/n O+(1.0.+-.0.2-x)R.sub.2/n O]:Y.sub.2 O.sub.3 :y XO.sub.2 :w H.sub.2 Owhere M is an inorganic cation of valance n, R is an organic cation of valence n, "x" has a value of less than 1.0, Y is one or more of +3 valence elements, such as aluminum, boron, gallium, iron, chromium, vanadium, molybdenum, or manganese, X is one or more of +4 valence elements, such as silicon, germanium, or titanium, "y" has a value of between 6 to 25, "w" has a value of up to 4 depending upon the degree of hydration of the zeolite, and having an X-ray diffraction pattern of the assynthesized zeolite substantially as in Table 1. The method for making the low ratio of XO.sub.2 /Y.sub.2 O.sub.3 such as SiO.sub.2 /Al.sub.2 O.sub.3 is achieved by adjusting the synthesis mixture composition during the aging stage through the addition of one or more of the solutions containing the reactive sources of zeolitic components.

Abstract: A core element for use in a catalytic converter, especially an electrically heatable catalytic converter, which core element is characterized by a corrugated thin metal strip having metal tabs attached to each end. The tabs are bent along one or more lines normal to the edges of the corrugated thin metal strip. When bent along one line, for example, an angular tab is formed. When the tabs are bent along an infinite number of lines a uniform amount, a circular segment is formed. A catalyst is deposited on one or both surfaces of the corrugated thin metal strips. A central portion of each strip is flat to enable location between the legs of a bifurcated central pin. The central pin with a group of such corrugated thin metal strips is then spirally wound about the central pin to provide a core with overlapped curved tabs defining at least two discrete generally spiral groups of resistance strips electrically isolated from each other.