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dc.contributor.authorMelville, Harry Worken
dc.date.accessioned2019-02-15T14:36:45Z
dc.date.available2019-02-15T14:36:45Z
dc.date.issued1932
dc.identifier.urihttp://hdl.handle.net/1842/35302
dc.description.abstracten
dc.description.abstractThe outcome of these low pressure investigations, in so far as chemistry was concerned, was to emphasise the importance of interfaces on the progress of gas reactions. Thus the Van't Hoff period in gas kinetics was succeeded by a period in which the differentiation between homogeneous and heterogeneous reactions was established by careful experimental work. Another impetus to the study of gas reactions was given hy the acute controversy on the origin of the energy of activation in homogeneous reactions resulting in the rise and fall of the radiation hypothesis of activation. Similarly, the discussion of the validity of the Stark-Einstein law of photochemical equivalence played a not inconsiderable part in laying the foundation for the theory of thermal chain reactions. How this came about will be shown in the sequel.en
dc.description.abstractIt may be stated at the outset that the reaction between phosphorus and oxygen is a chain reaction. The recognition of this fact only dates from 1927. However, the amount of attention which this reaction has attracted during the last hundred years has led to the accumulation of a very extensive literature relating to the subject. No attempt will be made below to survey or discuss this literature except in so far as it may refer to or supplement experiments at low pressures. Nor will any treatment be given concerning the origin or mechanism of the production of the green glow during the oxidation. Instead, the subject will be considered from the point of view of chain reactions.en
dc.description.abstractThe literature pertaining to the subject of chain reactions has grown considerably during the past few years, but since so many of the reactions studied bear a formal and sometimes a very close resemblance to the phenomena exhibited by the oxidation of phosphorus vapour it will be necessary to pay attention to the subject of chain reactions in general.en
dc.description.abstractThis essay is divided into seven sections: Section 1. The general theory of thermal chain reactions; Section 2. Experimental evidence supporting the theory; Section 3. The quantitative theory of the oxidation of phosphorus at low pressures; Section 4. The effect of foreign gases of the lower critical explosion pressures of P₄-O₂ mixtures. - Experimental results and discussion; Section 5. A sensitive direct reading mercury manometer; Section 6. The combination of phosphorus and oxygen at low pressures in presence of platinum and tungsten. Results and discussion; Section 7. Discussion of the P₄-O₂ reaction in general, reviewed in the light of the results described in Sections 4-6.en
dc.publisherThe University of Edinburghen
dc.relation.ispartofAnnexe Thesis Digitisation Project 2019 Block 22en
dc.relation.isreferencedbyAlready catalogueden
dc.titleThe oxidation of phosphorus at low pressuresen
dc.typeThesis or Dissertationen
dc.type.qualificationlevelDoctoralen
dc.type.qualificationnamePhD Doctor of Philosophyen


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