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Catalytic Removal of Volatile Organic Compounds

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ISBN: 9783038422136 9783038422143 Year: Pages: 290 DOI: 10.3390/books978-3-03842-214-3 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Added to DOAB on : 2016-07-12 11:17:23
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Nanoparticles for Catalysis

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ISBN: 9783038425366 9783038425373 Year: Pages: X, 154 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Chemistry (General)
Added to DOAB on : 2017-10-25 13:21:26
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The present book is aimed at illustrating the width of applications of metal nanoparticles in catalysis. It covers aspects such as metal nanoparticles preparation using natural biomolecules to the catalytic, photocatalytic and electrocatalytic activity of supported metal nanoparticles. In catalysis, metal nanoparticles exhibit general activity in oxidation and reduction reactions and the book contains examples of both types of processes in which the nanoparticles are on carbon supports or embedded inside the voids of microporous crystalline metal organic frameworks. Metal nanoparticles are also widely used in photocatalysis to enhance light absorption through plasmon band and the efficiency of the photochemical process. Besides classical applications, the use of metal nanoparticles is expanding rapidly in the field of renewable energies, going from catalysts for solid fuels electrodes to novel Li-O2 batteries.

Suzuki–Miyaura Cross-Coupling Reaction and Potential Applications

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ISBN: 9783038425564 9783038425571 Year: Pages: VIII, 264 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Chemistry (General)
Added to DOAB on : 2017-12-04 11:24:07
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Suzuki–Miyaura cross-coupling remains a powerful tool in organic synthesis for C–C bond formation and has various industrial applications, for example, the synthesis of pharmaceuticals and materials. Intensive research efforts are being made into finding ways of improving and expanding the scope of this process, and the development of more efficient catalytic systems for this extremely important reaction is still a hot research topic of enormous academic and industrial interest. This Special Issue, consisting of four reviews, two communications and six articles, focuses on recent promising research and novel trends in the broad field of Suzuki–Miyaura cross-coupling employing a range of different palladium catalysts. Homogeneous or heterogeneous catalysis in organic or aqueous medium, using conventional conditions or non-conventional techniques such as microwave and ultrasound irradiation, grinding and photo-activated processes as green chemistry approaches, as well as continuous flow technology are included. The catalysts described herein are unsupported metal complexes, catalysts immobilized on solid supports, ligand-free catalytic systems or metal nanoparticles.

Mineralogy of Noble Metals and “Invisible” Speciations of These Elements in Natural Systems

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ISBN: 9783039286348 / 9783039286355 Year: Pages: 224 DOI: 10.3390/books978-3-03928-635-5 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Geology --- Earth Sciences
Added to DOAB on : 2020-06-09 16:38:57
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This Special Issue covers a broad range of topics related to the mineralogy of noble metals (Au, Ag, Pt, Pd, Rh, and Ru) and the occurrence, formation, and distribution of these elements in natural ore-forming systems. This collection of eleven research articles discusses various problems related to these topics. I hope this Special Issue will contribute to a better understanding of the genesis of gold, silver, and other noble metal deposits as well as the behavior of these elements in endogenic and supergene environments, and suggest ways forward to solving the problem of their full extraction from ores.

Keywords

gold selenide --- gold sulfoselenide --- colloids --- nanoparticles --- nucleation --- liquid intermediates --- deposition --- XPS --- sulfide minerals --- platinum --- deposition --- valleriite --- chloride complexes --- zircon U–Pb age --- in situ sulfur isotopes --- gold source --- ore genesis --- Chaoyangzhai gold deposit --- Southeast Guizhou --- mineralization age --- Nibao gold deposit --- ore-forming fluid --- Rb–Sr isotopic composition --- Yunnan–Guizhou–Guangxi “Golden Triangle” region --- Gaching ore deposit --- mustard gold --- calaverite --- maletoyvayamite --- Fe-Sb(Te,As,Se,S)-oxides --- Au-Sb(Te,Se,S,As)-oxides --- Cu-Fe-Ni-S system --- platinum-group elements --- Au --- Ag --- metalloid elements --- fractional crystallization --- drop-shaped inclusions --- noble metals --- invisible species --- distribution --- pyrite --- arsenopyrite --- structural and surficial modes --- arsenopyrite --- crystal lattice --- ligand surroundings --- non-equal positions --- Mössbauer Effect --- gold --- “invisible” gold --- gold ore deposits --- Kagan ultramafic massif --- Southern Urals --- antigorite serpentinites --- magnetite veins --- gold mineralization --- native gold --- thermodynamic modeling --- fluid regime --- Fennoscandian Shield --- Kolmozero–Voronya belt --- Oleninskoe deposit --- mustard gold --- dyscrasite --- chlorargyrite --- gold ore field --- karst cavities --- monolithic and porous gold --- Tl oxides (avicennite) --- Tl carbonates --- Tl tellurates and antimonates --- n/a

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