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High temperature mass spectrometry and the thermodynamics of the titanium oxides
None
Date:
April 30, 1969
Creator:
Gilles, Paul W.
System:
The UNT Digital Library
SELECTIVITY IN ZEOLITE OCCLUSION OF OLEFINS
Selective occlusions of straight-chain paraffins in the presence of branched-chain hydrocarbons by naturally occurring zeolites of suitable dimension was reported as early as 1944 by Barrer and Ibbitson. More recently the capacity of synthetic zeolites or molecular sieves to absorb exclusively the straight-chain hydrocarbons from complex hydrocarbon mixtures has found extensive application in the petroleum industry. Under the conditions developed for most sieving operations any normal olefins present are occluded along with the normal paraffins. A supplemental separation technique must be employed to obtain n-paraffins free of olefins.
Date:
August 30, 1966
Creator:
Fenselau, Catherine & Calvin, Melvin
System:
The UNT Digital Library
IRRADIATION OF 3- SUBSTITUTED-2-PHENYLOXAZIRIDINES
It was noted previously that 3-(p-dimethylamino)-2-phenyloxaziridine (I) and 3-(p-dimethylamino)-2-(m-nitrophenyl)oxaziridine were photosensitive. Further study on the irradiation (in a variety of solvents under nitrogen) of (I), 2,3-diphenyloxaziridine (II), and 3-(p-nitrophenyl)-2-phenyloxaziridine (III) indicates the major photoreaction to be cleavage to the aldehyde and an intermediate which forms aniline and azobenzene. There is also formed in the photolysis varying amounts of the corresponding anilide. A table provided gives the yields in three different solvents.
Date:
August 30, 1967
Creator:
Splitter, Janet S. & Calvin, Melvin.
System:
The UNT Digital Library
Spiro wades in : governor displays rare knack with ethnic epithets
Article by Art Buchwald on Spiro T. Agnew using derogatory names for ethnic groups.
Date:
September 30, 1968
Creator:
Buchwald, Art
System:
The Portal to Texas History