Perspectives of the formation of polychlorinated Dibenzo-p-dioxins and Dibenzofurans during municipal solid waste (MSW) incineration and other

Article Abstract:

The pathways, by which polychlorinated dibenzo-p-dioxins and dibenzofurans are formed, and the interactions between their aromatic precursors, in particular chlorophenols and transition metal catalysts, are discussed. A literature scale survey, and data from pilot scale combustion, allow conclusions to be drawn on the relations between chloropheols and dibenzofurans, in municipal waste incineration and other combustion processes.

Heterogeneous catalysis, Dibenzofurans, Incineration

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Olefin epoxidation with inorganic peroxides. Solutions to four long-standing controversies on the mechanism of oxygen transfer

Article Abstract:

The study presents solutions to four controversies on the mechanism of the olefin epoxiadation with Mimoun-type complexes, [MoO (O2) 2(OPR3)], Hermann-type complexes, [ReO (O2) 2Me] are presented. Further the answers to the long-standing questions; focusing on contribution from quantum chemical calculations is discussed.

Oxygen transport, Chemical reactions, Olefins, Alkenes, Chemical properties

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[3+2] versus [2+2] addition of metal oxides across C=C bonds. reconciliation of experiment and theory

Article Abstract:

The mechanism of the addition of osmium tetra oxide, and rhenium (VII) oxides across C=C bonds was controversial. Early work indicated a [3+2] addition, and later kinetic studies suggested, an initial [2+2] addition, whereas recent quantum-chemical calculations showed the [3+2] addition to be favored.

United States, Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Osmium, Metallic oxides, Metal oxides, Chemical bonds

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