29 research outputs found
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United States Bureau of Mines Bulletin 602
From Introduction: "The material in this paper is about central paths and how bacterial enzymes manipulate and cleave the aromatic ring with the formation of hydroxylated aromatic ring with the formatio
Role of Water in Methanol Synthesis
This work focuses on the influence of water in determining the rate of methanol synthesis over CuO/ZnO/Al₂O₃ catalysts. The experimental investigations were conducted in a 1-L slurry reactor based on the novel liquid phase methanol synthesis process. The liquid medium used was a blend of paraffinic and naphthenic mineral oils with a mean molecular mass of 250. It was found that the methanol rates attained a maximum at an optimal water content which was dependent on the reaction temperature. The catalytic activity was found to decline with time at lower temperatures in the presence of a relatively large excess of water. The influence of water was also found to be firmly linked to the corresponding carbon dioxide content in the reactor feed. The experimental data bear additional significance because this was the first such study to be performed on the liquid phase process. Emphasis was therefore placed on the use of a CO-rich syngas in order to simulate anticipated process conditions
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United States Bureau of Mines Bulletin 615
From Introduction: "This report describes Bureau investigations on the effects and significance of treating coal and model compounds by lithium-ethylenediamine and some other metal-amine systems.