Other

Vanderbilt University

Viking Industries

Pearson Research Corp.

Donald E Pearson

Sidhaghatta D Venkataramu

Albert H Beth

James H Cleveland, Jr

Sindhaghatta D Venkataramu

A method of removal of cyanide and metal ions from electroplating waste waters is described. The cyanide, as hydrogen cyanide, is purged with air and then absorbed efficiently in 1.5% sodium hydroxide solution. The purge is effected by dispersing air bubbles in the waste water after adjusting the pH of the water to one within the range of from 4 to 6.5. The cyanide ions are converted to hydrogen cyanide and entrained in the air bubbles for transport to a separate vessel for absorbtion in the sodium hydroxide solution. The apparatus employed is a closed system to avoid the hazards associated with hydrogen cyanide.

Separation of metallic and cyanide ions from electroplating solutions

Process for catalytic dehydration of ethanol vapor to ethylene is provided which is carried out in the presence of water vapor, the mixture of ethanol and water vapor being contacted with the catalyst bed containing a substituted phosphoric acid catalyst. The catalyst comprises a catalyst support having absorbed thereon a substituted phosphoric acid in which one of the hydroxyl groups thereof has been replaced by a hydrophobic organic group containing from 4 to 22 carbons.

Process for catalytic dehydration of ethanol vapor to ethylene

An improved maleimide spin label, namely, N-(.sup.15 N-oxyl-2,2,6,6-tetra-methyl-4-piperidinyl-d.sub.17) maleimide is provided for EPR spectroscopic investigations of biomedically relevant problems. Isotopic substitution of nitrogen-15 in the N--O bond and deuterium in the methyl groups (-CD.sub.3) and in all positions of the piperidine ring results in simplification of the EPR spectrum, greatly improved resolution, and a marked increase in signal intensity.

Resolution enhancing maleimide spin label for biological EPR studies

Beta-halo esters, such as .beta.-haloalkyl benzoates or terephthalates, are prepared by halogenative cleavage of cyclic acetals using trimethyl phosphate (TMP) or borate to mediate the reaction. The .beta.-halo esters, which are obtained in high yields, can be used to form polymers or plasticizers. Neuromuscular blocking agents such as succinylcholine and related compounds can also be prepared.

Method of preparing .beta.-halo esters from cyclic acetals

A novel process is disclosed for preparing hydrocarbon mixtures from methanol or trimethyl phosphate. The process comprises heating the methanol or trimethyl phosphate with phosphorus pentoxide, polyphosphoric acid or a species of polyphosphoric acid intermediate between the two reagents at a temperature of circa. 185.degree. C. to 300.degree. C. The hydrocarbon mixtures obtained are useful fuel and lubricant compositions.

Process for preparing hydrocarbons from methanol and phosphorus pentoxide

A process and solvent and/or reactant for halogenating organic compounds. The organic compounds are contacted with a solution of trialkyl phosphate and a halogen. The solution of trialkyl phosphate may additionally include phosphorous pentoxide.

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Nashville, TN, United States of America

Donald E Pearson