Method and apparatus for determining the nitric oxide content of a sample gas stream. The nitric oxide in the gas stream is reacted with an excess amount of ozone so as to completely convert the nitric oxide into nitrogen dioxide. The resulting gas containing nitrogen dioxide and residual ozone is passed through a scrubber which removes the ozone and does not affect the nitrogen dioxide content of the gas. The resulting gas is then analyzed for its NO.sub.2 content, which is a function of the ni...

Homogeneous non-porous compositions having an average grain size of less than about 10 microns, a density in excess of 95 percent of theoretical and consisting essentially of 1. 10 to 50 volume percent of alumina, zirconia or their mixtures; and 2. 50 to 90 volume percent of a nitride of titanium, tantalum, zirconium, hafnium or their mixtures; Demonstrate unusual resistance to frictional wear and chemical attack.

An apparatus for removal of sulfur and nitrogen dioxide from gases which may comprise a plurality of scrubbers and an ion exchange resin bed successively receiving gas containing SO.sub.2 and nitrogen oxides and contacting the same with absorbing liquor and the resin bed, means receiving the absorbing liquor from at least one of said scrubbers for removing and concentrating SO.sub.2 from at least a portion of said absorbing liquor, and means for concentrating SO.sub.2 and nitrogen oxides directl...

The invention is directed to improvements in the production of ethylene oxide by the controlled, partial oxidation of ethylene in the presence of a silver supported catalyst. New results and advantages including elimination of the need for halogenated inhibitors in the ethylene oxide process are attributable to the use of a silver impregnated catalyst comprising inert porous support particles wherein at least 90 percent of the pore diameters fall within a limited range and the average pore diame...

Cu.sub.2 O is precipitated from a copper chelate solution by the addition of alkaline material and a reductant. The stability constant of the chelate must be more than 5.

Pellets of manganese ore and having a porosity of not less than 45 percent are disclosed. In a preferred form the major portion of the manganese content is present as manganous oxide. The balls are produced by forming a finely divided mixture of manganese ore, a carbonaceous fuel such as coke, and an addition agent which will form gaseous products on heating, and heating the balls at a temperature and for a time sufficient to partially reduce the manganese ore and obtain the required porosity. T...

MgO in combination with a rubber plasticizer and a surface active agent and/or metallic soap for use in chloroprene polymer compounding and processing.

Preparing cuprous oxide from an aqueous cuproammonium solution containing cuprous and cupric ions by contacting the solution with an ion exchange resin in which cupric ions are retained and cuprous ions are not. The raffinate passing through the ion exchange resin is withdrawn and heated to evolve ammonium ions and to form cuprous oxide. The cuprous oxide then is recovered by filtering and drying.

Novel oxides of aminocarboxylates or aminocarboxylic acids are of the formula: ##SPC1## Wherein R.sup.1 is an aliphatic hydrocarbon radical of four to 20 carbon atoms, R.sup.2 is a hydrocarbon radical of one to four carbon atoms or is R.sup.3 COOX, R.sup.3 is a divalent aliphatic or aromatic hydrocarbon radical of one to nine carbon atoms, which may be the same as or different from another R.sup.3 radical which may be prsent in the compound, X is hydrogen, alkali metal, alkaline earth metal, oth...

A carrier of uranium oxide pellets suitable for use in dewaxing and sintering of said pellets has a molybdenum or stainless steel base on which there are multiple layers of corrugated molybdenum sheets for holding the pellets within the depressions of the parallel corrugations. The molybdenum sheets are placed above each other with the corrugations running in about the same general direction. The separation of these sheets is by the uranium oxide pellets during the sintering operation and by mol...