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Full-Text Articles in Physical Sciences and Mathematics
Impact Of Several Chemical And Physical Properties Of Two H-Coal Recycle Solvent Streams On Their Relative Solvent Quality, Joe Collins
Masters Theses & Specialist Projects
The purpose of this study was to follow the solvent quality curve of the recycle solvent streams of the H-Coal Pilot Plant run by Ashland Petroleum Company at Catlettsburg, Kentucky. This was done with the use of a microautoclave (shaker-bomb liquefaction unit). Several physical and chemical properties of these recycle oils were determined, and these values were correlated with the observed solvent quality. It is shown that the relative, solvent quality of these recycle oils correlate well with many of the chemical and some of the physical properties determined in this study.
Use Of Ft-Ir And Nmr Spectra Of The Thf Extracts Of Mid-Rank Bituminous Coals To Predict Plasticity, Samuel Adesoji Irefin
Use Of Ft-Ir And Nmr Spectra Of The Thf Extracts Of Mid-Rank Bituminous Coals To Predict Plasticity, Samuel Adesoji Irefin
Masters Theses & Specialist Projects
Plasticity, which typically develops at 380-420°C, is a unique property of mid-ranked coals. The phenomenon of plasticity in coals has been known for a long time but is still poorly understood. Even among coals of identical subrank and chemical composition, large differences in plastic behavior are commonly encountered. Plastic coals go through a softening and swelling state upon heating before they resolidify. Concurrent with the plastic state of the coal, thermal decomposition of the coal takes place.
The coking ability of a coal can be directly related to the plasticity of the coal. In liquefaction reactions, plastic coals tend to …
The Nature Of Supported Co-Mo And Ni-W And Hydrodenitrogenation And Hydrodesulfurization Of Model Compounds, Eric Dadey
The Nature Of Supported Co-Mo And Ni-W And Hydrodenitrogenation And Hydrodesulfurization Of Model Compounds, Eric Dadey
Masters Theses & Specialist Projects
The catalytic vapor-phase isomerization, hydrogenolysis, and/or disproportionation of trimethylbenzen (TMB) over Co-Mo/Al2O3 and Ni-W/Al2O3 was studied at 480°C, 400 psi reactor pressure, and a constant H2 flow. Each catalyst was run in the reduced or sulfided form. The results show a marked difference in the product distributions for each catalyst, which is attributed to differences in the catalysts’ acidities.
The hydrodenitrogenation (HDN) of quinolone and the hydrodesulfurization (HDS) of benzothiophene were also studied. The compounds were reacted in a 1 liter autoclave at 325°C and varying partial pressures of H2. The …