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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
131

Probabilistic modeling of natural attenuation of petroleum hydrocarbons

Hosseini, Amir Hossein. January 2009 (has links)
Thesis (Ph. D.)--University of Alberta, 2009. / Title from PDF file main screen (viewed on Feb. 19, 2010). A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Doctor of Philosophy, Department of Civil and Environmental Engineering, University of Alberta. Includes bibliographical references.
132

New approaches to higly dispersed metal zeolite catalysts for hydrocarbon conversion

Shepherd, Ashley January 2012 (has links)
The preparation of catalysts by the adsorption and subsequent decomposition of volatile metal carbonyl species, namely Mo(CO)6, within zeolites could result in the Mo species being in a more highly dispersed state thoughout the zeolite than can generally be achieved with the conventional wetness impregnation method. The uptake and decomposition of metal carbonyls in various zeolites has been studied thermogravimetrically, using a vacuum microbalance. This gave information on the amount of Mo(CO)6 that can be uptaken into the zeolite pores, the relative amounts remaining during decarbonylation and final weight loadings of Mo within the zeolite. Zeolites tested were HUSY, HBeta, HZSM-5, HMordenite and HMCM-22 of varying Si/Al ratio. Thermal and photo activated decarbonylations of Mo(CO)6, both with and without the presence of O2, gave a range of Mo/zeolite catalysts with tuneable metal weight loading. This could be anywhere between 0 and 15 wt%, depending on zeolite. The as-synthesised and used catalysts were analysed by a range of techniques, such as X-Ray Photoelectron Spectroscopy, IR Spectroscopy, X-ray Diffraction, 27Al Nuclear Magnetic Resonance and High Resolution Transmission Electron Microscopy. The prepared Mo/Zeolite catalysts were assessed for their suitability in the methane dehydroaromatisation reaction and compared to catalysts prepared by the conventional wetness impregnation technique (using an aqueous solution of (NH4)6Mo7O24). Catalysts were tested on a custom built microreactor with online GC analysis. The use of two GC systems (GC-FID and GC-TCD) allowed for the analysis of all major products. Testing was carried out over an 8 hour period using a methane space velocity of 3000 ml g-1 h-1. Reaction profiles were constructed using the carbon balancing method.
133

The role of biogenic hydrocarbons in the photochemical production of tropospheric ozone in the Atlanta, Georgia region

Richardson, Jennifer Lynn 05 1900 (has links)
No description available.
134

Rearrangement of hydrocarbon carbanions

Williams, Laney Peter 08 1900 (has links)
No description available.
135

The solubilities of benzene and other related hydrocarbons in H₂O and D₂O

Yang, Chia Chi 12 1900 (has links)
No description available.
136

Kinetics of iodination of methyl substituted benzenes

McKelvey, John Murray 05 1900 (has links)
No description available.
137

Identification of high molecular weight polycyclic aromatic hydrocarbons by chromatography and mass spectrometry

Lopez Sanchez, Susana 12 1900 (has links)
No description available.
138

Hydrometallation of alkenes with magnesium alkyls and hydrides catalyzed by bis(cyclopentadienyl)titanium dichloride

Ainslie, Richard Dayle 05 1900 (has links)
No description available.
139

Reactions of cesium with aromatic hydrocarbons

Longfield, Thomas Howard 12 1900 (has links)
No description available.
140

Partial oxidation of hydrocarbons over a staged catalyst

Rekhelman, Michael Arik 12 1900 (has links)
No description available.

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