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Examination of selective quenching agents for polycyclic aromatic hydrocarbons in polyamido amine dendrimersWade, Deborah A. January 2000 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 2000. / Typescript. Vita. Includes bibliographical references. Also available on the Internet.
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Synthesis of derivatives of 4H-cyclopenta[def]phenanthren-4-one and development of synthetic strategies for the polycyclic aromatic hydrocarbons with carbon frameworks represented on the surface of C₆₀Han, Xiaoqing. January 2001 (has links)
Thesis (M.S.)--West Virginia University, 2001. / Title from document title page. Document formatted into pages; contains ix, 41 p. : ill. Includes abstract. Includes bibliographical references (p. 39-41).
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Mechanistic studies of the oxidations of hydrocarbons by manganese and ruthenium transition metal complexes /Bryant, Jasmine R. January 2002 (has links)
Thesis (Ph. D.)--University of Washington, 2002. / Vita. Includes bibliographical references (leaves 121-128).
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Development of a technique to study stable carbon isotope composition of NMHCs in ambient airCzuba, Eva. January 1999 (has links)
Thesis (M. Sc.)--York University, 1999. Graduate Programme in Chemistry. / Typescript. Includes bibliographical references (leaves 107-112). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://wwwlib.umi.com/cr/yorku/fullcit?pMQ56169.
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Catalytic formation of polycyclic aromatic hydrocarbons from acetylene over silicon carbideZhao, Tianqi, 趙天騏 January 2014 (has links)
In this research, silicon carbide (SiC) has been confirmed to be catalytically active for the formation of polycyclic aromatic hydrocarbons (PAHs) from acetylene (C2H2). Aromatization reactions of C2H2wasexamined by gas-phase experiments in vacuo using α-SiC and β-SiC respectively, characterized with in situ time-of-flight mass spectrometry (TOF-MS)in which abundant information of intermediates was record-ed. The significance of this catalytic reaction lies in the fact that the reagents –acety-lene, the catalyst –SiC, and the PAH products are all coexisting in interstellar environment and this reaction indicates one of the possible channels for the formation of PAHs. Reaction products obtained were further confirmed by gas chromatography mass spectrometry (GCMS). The SiC catalysts were analyzed before and after the re-action using high-resolution transmission electron microscopy (HRTEM), X-ray dif-fraction(XRD) and derivative thermogravimetry (DTG).Results of experiments indicate that SiC catalyzes aromatization of C2H2starting from 400℃with activities dependent on temperature and notable difference has been observed between α and β crystal forms. For a long-time reaction at a particular temperature, the changes in productions of the four major PAH products, i.e. naphthalene, anthracene, phenan-threne and pyrene showed the transition from small PAHs to larger PAHs. Carbon deposition on the catalyst depends on temperature, which explains the deactivation of SiC catalyst at high temperatures.
Based on experimental results, two new mechanisms for activation of acetylene on SiC that are closely connected with SiC surface dangling bonds have been proposed: 1)breakage of C-H bond by interaction of H with dangling bonds; 2) radical addition of hydrocarbon to form a surface ring structure which is then desorbed from the surface. Subsequent ring-growth process is suggested to follow the H abstraction / C2H2addition (HACA) mechanism. The activation effect of SiC dangling bonds was then extended to aromatization of propylene (C3H6) and propane (C3H8) starting from 650℃ and 750 ℃respectively in similar conditions. Comparison among reactions of C2H2, C3H6and C3H8provides further evidence for the proposed mechanism. / published_or_final_version / Chemistry / Master / Master of Philosophy
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Part I, Synthetic approaches to borepin ; Part II, Reactions in the dihydroethanoanthracene seriesShenoy, Purushotham K., 1933- January 1966 (has links)
No description available.
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The structure determination of photocaryophyllene A by x-ray diffraction and the methylation of pentadienyl anionsForsythe, George Daniel, 1943- January 1969 (has links)
No description available.
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THE ANTAGONISTIC EFFECT OF CARCINOGENIC HYDROCARBONS ON MURINE VIRUS-INDUCED LEUKEMIASFiscus, Alvin Gale, 1930- January 1966 (has links)
No description available.
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Modelling interactions of polycyclic aromatic hydrocarbons during soot formationTotton, Timothy Stephen January 2012 (has links)
No description available.
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The effects of 3-methylcholanthrene, benz(a)anthracene, and anthracene on Friend virus leukemiaChery, Marsha Parkinson, 1942- January 1968 (has links)
No description available.
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