T. P. 718 - Chemical and Thermomagnetic Studies on Iron Catalysts for Synthesis of Hydrocarbons

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Section 1 762kb	Preface, by L. J. E. Hofer				1
	Acknowledgments				2
	Foreward, by L. J. E. Hofer				3
		Introduction to carbides of iron and their physical and chemical properties			3
			Cementite		6
			Martensite		8
			Austenite with dissolved carbon		8
			Ferrite with dissolved carbon		8
			Carbide of Brill and Mark		9
			Carbide of Hofmann and Groll		9
			Carbide of Tutiya		9
			Carbide of Halle and Herbst		9
			Carbide II of Pichler and Merkel		9
			Carbide of Bahr and Jessen		10
			Carbide of Hägg		11
			Carbide of Jack		11
			Cubic iron sesquioxide of LeClerc and Lefebvre		11
			Carbide I of Pichler and Merkel		11
			Carbide of Durand		12
		Summary			12
		Appendix			15
Section 2 641kb	Introduction				16
	Review of literature				17
		Heterogeneous catalysis			17
		Fe-C-O system (excluding higher iron carbides)			19
		Formation of higher carbides by action of carbon monoxide on iron			22
		Thermomagnetic study on carburized iron			25
		Summary			26
Section 3 802kb	Experimental part				28
		Chemical study			28
			Carburization of iron catalysts prior to medium-pressure synthesis		28
			Methods and apparatus		28
			Acid decomposition of iron catalysts carburized under various conditions		29
				Methods and apparatus	29
				Free carbon	30
				Carbidic carbon	33
			Oxygen content of carburized catalysts		37
			Hydrogen reduction of a carburized-iron catalyst		40
			Summary		40
		Effect of Carburization of iron catalysts upon their activity during medium-pressure synthesis			40
			Effect of carbidic carbon on activity of iron catalysts		40
			Formation of free carbon on iron catalysts		45
			Summary		47
Section 4 859kb	Thermomagnetic analysis				47
		Description of magnetic balance			47
		Preliminary experiments			50
		Formation and stability of higher iron carbides			51
		Carburization of iron catalysts for medium-pressure synthesis			58
			Carburization of iron oxide		60
			Carburization of an alkalized iron catalyst		62
			Carburization of an alkalized iron catalyst containing copper		63
Section 5 869kb		Behavior of iron catalysts during hydrocarbon synthesis			71
			Medium-pressure synthesis		71
			Atmospheric-pressure synthesis		82
			Effect of carbide content on catalyst activity		96
		Summary			97
Section 6 724kb		Mechanism of the synthesis			98
		Discussion of experimental results and summary			99
	Indexes				101