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Small ring N-chloramine solvolysis : reactions of some strained rings with electron deficient acetylenes/Carrasquillo, Arnaldo January 1971 (has links)
No description available.
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Bands of carbon-13 and deuterium-enriched species of acelytene : technology developed and interpretation of the data observed /Barnes, Russell Henry January 1972 (has links)
No description available.
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Syntheses and reactions of acetylenic sugar derivatives /Tsai, Ji-Hsiung January 1975 (has links)
No description available.
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Infrared spectra and hydrogen bonding of acetylenesKraihanzel, Charles Stephen, January 1962 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1962. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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Transition metals promoted alumina catalystsMubarak, Ahmed T. A. January 1999 (has links)
No description available.
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A study of stereo-electronic factors in the addition of dimethyl acetylene dicarboxylate to substituted 1H- and 3H-indoles /Wai, Sui-man, John. January 1984 (has links)
Thesis (M. Phil.)--University of Hong Kong, 1984. / Caption title.
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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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A study of stereo-electronic factors in the addition of dimethyl acetylene dicarboxylate to substituted 1H- and 3H-indoles衛小文, Wai, Sui-man, John. January 1984 (has links)
published_or_final_version / Chemistry / Master / Master of Philosophy
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The reaction of O(3P) atoms with methyl iodide: studies of nascent reaction products with considerationsfrom the observations of the O(3P) reaction with acetylene鄺珠聯, Kwong, Chu-luen. January 1992 (has links)
published_or_final_version / Chemistry / Doctoral / Doctor of Philosophy
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Studies in organo-transition metal chemistry /Liddell, Michael John. January 1989 (has links) (PDF)
Thesis (Ph. D.)--Dept. of Physical and Inorganic Chemistry, University of Adelaide, 1989. / Typescript (Photocopy). Includes bibliographical references.
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