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Frevel Ludo K, Kressley Leonard J: Dealkynation of olefin and diolefin streams. The Dow Chemical Company, Baker Glwynn R, October 14, 1975: US3912789 (28 worldwide citation)

Lower alkynes such as acetylene, methylacetylene, vinylacetylene, and ethylacetylene are effectively removed from olefin and diolefin streams by contacting the contaminated liquid containing dissolved hydrogen with a finely divided metal catalyst consisting of copper plus at least one polyvalent act ...


2
Frevel Ludo K, Kressley Leonard J: Removal of carbon monoxide from air. The Dow Chemical Company, September 11, 1973: US3758666 (16 worldwide citation)

Air containing carbon monoxide is contacted with a palladium catalyst under ambient conditions. It is believed that carbon monoxide removal is achieved by initial adsorption and subsequent oxidation to carbon dioxide on the catalyst surface. When the catalyst loses its effectiveness, it has been fur ...


3
Frevel Ludo K, Kressley Leonard J: Process for the preparation of porous sodium bicarbonate. The Dow Chemical Company, Schilling Edward E, February 25, 1975: US3868444 (9 worldwide citation)

Disclosed is a process for preparing hard, porous granules of sodium bicarbonate having a surface area greater than 0.5 square meter per gram. The process involves reacting ammonium bicarbonate with a soluble sodium salt in aqueous solution wherein the concentration Na.sup.+ is greater than about 2. ...


4
Frevel Ludo K, Kressley Leonard J: Process for recovering carbon dioxide from stack gas. The Dow Chemical Company, May 2, 1972: US3660023 (9 worldwide citation)

Disclosed is a process for recovering pure CO.sub.2 from stack gases produced by the combustion of carbonaceous material. The process involves contacting the stack gas with porous sodium carbonate having a high surface area, i.e., greater than 0.3 m.sup.2 /gm. at a temperature of from about 40.degre ...


5
Frevel Ludo K, Kressley Leonard J: Removal of .alpha.-acetylenes from gas streams. The Dow Chemical Company, Thurston David T, Baker Glwynn R, July 29, 1975: US3897511 (8 worldwide citation)

Lower alpha-alkynes such as acetylene, methylacetylene, vinylacetylene, and ethylacetylene are effectively removed from hydrocarbon and other gas streams by contacting the contaminated gas with a finely divided metal catalyst consisting of copper plus at least one polyvalent activator metal supporte ...


6
Kressley Leonard J: Self-leveling grateless stack gas scrubber. August 22, 1972: US3685262 (4 worldwide citation)

A counter-current solid-gas scrubber for the removal of SO.sub.2 and other undesirable components from stack gas has been invented. The construction of the chamber allows self-leveling of the solids and continuous flow of particulate solids and gases without grates or agitation. The chamber has a pl ...


7
Frevel Ludo K, Kressley Leonard J: Alkyl amindosulfinic acid (bis-alkylamine) salts and method for their preparation. The Dow Chemical Company, Hoynak Stephen, October 22, 1974: US3843722

New aliphatic imidodisulfinic acid (aliphatic amine) salts are prepared by reacting a primary aliphatic amine or an alkanolamine having a primary amino group with SO.sub.2 under anhydrous conditions and in the absence of oxygen. The compounds reacts with Cu, Pb, Hg and other inorganic cations to for ...


8
Frevel Ludo K, Kressley Leonard J: Desalkynation dolefines et de diolefines en circulation, Dealkynation of olefin and diolefin streams. The Dow Chemical Company, July 17, 1979: CA1058641

A B S T R A C T Lower alkynes are effectively removed from olefinand diolefin streams by contacting the stream containingdissolved hydrogen with a finely divided metal catalystconsisting of copper plus at least one polyvalent activatormetal supported on a high surface area gamma alumina contain-ing ...


9