Substitution kinetics of norbornadiene in tetracarbonyl (norbornadiene) metal (zero) (metal : chromium, molybdenum, tungsten) by bis (diphenylphosphino) alkane

Tekkaya, Ayşin


Sytnhesis and characterization of nano zinc borate and its usage as a flame retardant for polymers
Baltacı, Berk; Bayram, Göknur; Department of Chemical Engineering (2010)
The objectives of this study are to synthesize sub-micron sized zinc borate and to use them with other flame retardant additives in poly(ethylene terephthalate) (PET) based composites. The study can be divided into two parts. In the first part, it was aimed to synthesize sub-micron sized zinc borate (2ZnO.3B2O3.3.5H2O) with the reaction of zinc oxide and boric acid. For this purpose, low molecular weight additives or surfactants were used in the syntheses to prevent the agglomeration and to decrease particl...
Thermal cracking kinetics of the heavy paraffins in the presence of carbon dioxide under subcritical and supercritical conditions
Karakaş, Gürkan; Doğu, Timur; Somer, Tarık G.; Department of Chemical Engineering (1995)
Solution of Large Scattering Problems using a Multilevel Scheme in the context of Characteristic Basis Finite Element Method
Ozgun, Ozlem; Mittra, Raj; Kuzuoğlu, Mustafa (2010-07-17)
Dimethyl ether synthesis over novel mesoporous catalysts
Tokay, Kenan Cem; Doğu, Timur; Department of Chemical Engineering (2008)
Due to overconsumption, fossil reserves are rapidly being depleted and various sources predict that they will not last until the end of 21st century. Moreover, the increase in the rate of global warming and the polluting matter emitted by the vehicles consuming fossil fuels has increased the search for renewable and clean energy sources. Alcohols and ethers, which contain fewer pollutants and have better burning properties, are commonly thought among clean fuel alternatives. Among the potential clean energy...
High school students conceptions about energy in chemical reactions
Yalçınkaya, Eylem; Taştan Kırık, Özgecan; Boz, Yezdan (2009-01-01)
The aim of this study is to investigate students’ understanding of the energy concept in chemical reactions including heat and temperature, endothermic-exothermic reactions, combustion reactions, bond energy, enthalpy, stability in chemical reactions and calorimeter. The sample consisted of 222, 10th grade students. Both qualitative and quantitative methodology was used for this investigation. A twenty-item multiple choice test was developed about the topic to measure the students’ understandings. This conc...
Citation Formats
A. Tekkaya, “Substitution kinetics of norbornadiene in tetracarbonyl (norbornadiene) metal (zero) (metal : chromium, molybdenum, tungsten) by bis (diphenylphosphino) alkane,” Ph.D. - Doctoral Program, Middle East Technical University, 1997.