Accession Number : AD0431013


Title :   INVESTIGATION OF THE PARA-ORTHO SHIFT OF HYDROGEN.


Descriptive Note : Final rept., Mar-Sep 62,


Corporate Author : AIR PRODUCTS AND CHEMICALS INC ALLENTOWN PA


Personal Author(s) : Clark,R G ; Kucirka,J F ; Jambhekar,A ; Schmauch,G E


Report Date : Oct 1963


Pagination or Media Count : 52


Abstract : Investigations of the low-temperature, heterogeneous catalysis of the para-ortho shift of hydrogen for the recovery of the endothermic heat of conversion as low-temperature refrigeration are reported. The research program included: studies of the effects of catalyst activation temperature, particle size, and chamber diameter on conversion activity; adsorption studies; the determination of separation factors of advanced catalysts; and preliminary work to determine the magnetic properties of advanced catalysts. An extensive catalyst development program resulted in improved catalyst systems for the conversion. The most advanced catalyst shows an activity 10.5 times more effective, on a weight basis, than hydrous ferric oxide gel which is the best commercial catalyst available for the conversion. (Author)


Descriptors :   *CATALYSTS , *HEAT TRANSFER , CRYOGENICS , HYDROGEN , HYDROGEN , LIQUEFIED GASES , CATALYSIS , HEAT OF ACTIVATION , PARTICLE SIZE , REACTION KINETICS , ADSORPTION , SURFACES , SEPARATION , MAGNETIC PROPERTIES , PARAMAGNETIC MATERIALS , GELS , IRON COMPOUNDS , REFRIGERATION SYSTEMS , LIQUID PROPELLANT ROCKET ENGINES , OXIDES


Distribution Statement : APPROVED FOR PUBLIC RELEASE