Development and validation of a method for removal of normal paraffin hydrocarbon in radioactive waste samples prior to analysis of semivolatile components

1995 ◽  
Vol 198 (1) ◽  
pp. 89-111
Author(s):  
E. W. Hoppe ◽  
J. A. Campbell ◽  
R. W. Stromatt
Keyword(s):  
Radioactive Waste ◽  
Paraffin Hydrocarbon ◽  
Normal Paraffin ◽  
Development And Validation

Kinetics of extraction of nitric acid into binary mixture of tri-n-butyl phosphate and normal paraffin hydrocarbon

2016 ◽  
Vol 111 ◽  
pp. 492-503 ◽  
Author(s):  
N.K. Pandey ◽  
Elizabeth Augustine ◽  
Remya Murali ◽  
N. Desigan ◽  
U. Kamachi Mudali ◽  
...  
Keyword(s):  
Nitric Acid ◽  
Binary Mixture ◽  
Paraffin Hydrocarbon ◽  
Normal Paraffin ◽  
Kinetics Of

Equilibrium Study for the System Tri-n-butyl Phosphate, Normal Paraffin Hydrocarbon, and Nitric Acid

2011 ◽  
Vol 56 (6) ◽  
pp. 2856-2860 ◽  
Author(s):  
Shaila Lalkuwar Bajoria ◽  
Virendra Kisan Rathod ◽  
N. K. Pandey ◽  
U. Kamachi Mudali ◽  
R. Natarajan
Keyword(s):  
Nitric Acid ◽  
Paraffin Hydrocarbon ◽  
Normal Paraffin ◽  
Equilibrium Study

Isoprene and Rubber. XXIV. The Reduction of Rubber with Hydriodic Acid

1931 ◽  
Vol 4 (3) ◽  
pp. 365-367
Author(s):  
H. Staudinger ◽  
James R. Senior
Keyword(s):  
Elevated Temperature ◽  
Catalytic Hydrogenation ◽  
Catalytic Reduction ◽  
Hydriodic Acid ◽  
Hydrogenation Product ◽  
Butadiene Rubber ◽  
Paraffin Hydrocarbon ◽  
Normal Paraffin ◽  
The Past ◽  
Branched Chain

Abstract In the past, the reduction of rubber has been of special interest since Harries was of the opinion, based on his ideas on the constitution of rubber, that hydrorubber might possibly be distilled without decomposition in vacua, and therefore that its preparation would be of importance in explaining the constitution of rubber. Staudinger and Fritschi obtained a hydrorubber by catalytic reduction, which they considered to be a high molecular paraffin hydrocarbon; in the distillation it cracked and yielded low molecular cleavage products. It was concluded from this that rubber must also be a high molecular hydrocarbon. Contrary to this opinion, there was the evidence that the hydrorubber had the same appearance as rubber and dissolved readily in solvents like ether, and therefore showed essential differences from high molecular paraffins of known constitution as, for example, dimyricyl. Since hydrorubber has a branched chain, it might be thought that it differed from dimyricyl on this account. It was surprising, however, that in the reduction of butadiene rubber the hydrogenation product obtained likewise does not possess the physical properties of a high molecular paraffin hydrocarbon, although here properties similar to those of high molecular paraffins are to be expected, since a normal paraffin chain should result from the reduction of butadiene rubber. These problems were sufficient inducement for preparing hydrorubber in still another way. Berthelot had already many years ago converted rubber with hydriodic acid at an elevated temperature into paraffin hydrocarbons, which distilled above 350° without decomposition. One might assume, therefore, that there is perhaps in this substance the true hydrogenation product of rubber which was sought by Harries, whereas in catalytic hydrogenation the rubber micelle assumed by Harries is not completely split up.

18: Measuring Quality-of-Life after Surgery: Development and Validation of the Convalescence and Recovery Evaluation (CARE)

2007 ◽  
Vol 177 (4S) ◽  
pp. 7-7
Author(s):  
Brent K. Hollenbeck ◽  
J. Stuart Wolf ◽  
Rodney L. Dunn ◽  
Martin G. Sanda ◽  
David P. Wood ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Development And Validation
Sign in / Sign up

Export Citation Format

Share Document