Gotowe bibliografie tematyczne / Gold/Gallium/Calcium catalysts

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Gotowa bibliografia na temat „Gold/Gallium/Calcium catalysts”

Autor: Grafiati

Data publikacji: 25 stycznia 2025

Data aktualizacji: 31 lipca 2025

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Artykuły w czasopismach na temat "Gold/Gallium/Calcium catalysts"

Kovalskaya, T. N., D. A. Varlamov, A. R. Kotelnikov, N. V. Chukanov, and G. M. Kalinin. "Hydrothermal synthesis of gallium epidote—analogue phases Ca2Al2Ga (Si3O12) (OH) from Tykotlova gold-sulfide occurence." Геохимия 64, no. 10 (2019): 1079–90. http://dx.doi.org/10.31857/s0016-752564101079-1090.

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In order to reconstruct the crystallization conditions of the gallium epidote analogue Ca2Al2Ga(Si3O12)(OH) from the Tykotlova gold-sulphide ore occurrence in the Polar Urals, for the first time, a series of epidote-gallium epidote solid solutions were synthesized. The parameters of the unit cell were calculated for these phases, and IR and Raman spectra were obtained. It was concluded that gallium is predominantly in position M3, which allows us to consider the gallium epidote as an independent mineral specie. Stable Ga-containing aluminosilicate and silicate phases in the Ca-Ga-Al-Fe-Si-O sy

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REDDY, E. LINGA, A. PRABHAKARN, J. KARUPPIAH, N. RAMESHBABU, and CH SUBRAHMANYAM. "GOLD SUPPORTED CALCIUM DEFICIENT HYDROXYAPATITE FOR ROOM TEMPERATURE CO OXIDATION." International Journal of Nanoscience 11, no. 03 (2012): 1240004. http://dx.doi.org/10.1142/s0219581x12400042.

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Gold supported hydroxyapatite (HA) and calcium deficient hydroxyapatite (CDHA) was studied for the room temperature CO oxidation. Nanostructured gold catalyst has been prepared by deposition precipitation method, whereas HA was synthesized by microwave synthesis. Inorder to understand the influence of surface properties of HA, support HA was synthesized with different Ca/P ratios (1.67, 1.62, 1.57, 1.534 and 1.5). The gold supported catalysts were characterized by XRD, BET, ICP-OES and TEM. Typical results indicate that gold supported 1.57 HA shows higher activity compared to other HA catalyst

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Wisniewska, Joanna, Izabela Sobczak, and Maria Ziolek. "The effect of the calcium dopant on the activity and selectivity of gold catalysts supported on SBA-15 and Nb-containing SBA-15 in methanol oxidation." Catalysis Science & Technology 11, no. 6 (2021): 2242–60. http://dx.doi.org/10.1039/d0cy02135k.

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Gold catalysts based on SBA-15, NbSBA-15 (Nb introduced in one pot synthesis) and Nb<sub>2</sub>O<sub>5</sub>/SBA-15 (prepared by impregnation of SBA-15) were doped with calcium species introduced before Au loading and were tested in gas-phase methanol oxidation.

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Ndlela, Siyabonga S., Holger B. Friedrich, and Mduduzi N. Cele. "Effects of Modifying Acidity and Reducibility on the Activity of NaY Zeolite in the Oxidative Dehydrogenation of n-Octane." Catalysts 10, no. 4 (2020): 363. http://dx.doi.org/10.3390/catal10040363.

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Non-coking stable alkaline earth metal (M = Mg, Sr, and Ba) modified Ga-NaY catalysts were prepared by ionic-exchange and tested in oxidative dehydrogenation (ODH) of n-octane using air as the source of oxygen. The role of the alkaline earth metals in NaY was to poison the acid sites while enhancing the basic sites responsible for ODH. The exception was the calcium modified NaY, which was more acidic than the parent NaY, coking and unstable under the ODH conditions used in this study. The role of gallium was to enhance the dehydrogenation pathway and improve the stability of NaY. The sequence

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Vecchietti, Julia, Sebastián Collins, Juan José Delgado, et al. "Gold Catalysts Supported on Cerium–Gallium Mixed Oxide for the Carbon Monoxide Oxidation and Water Gas Shift Reaction." Topics in Catalysis 54, no. 1-4 (2011): 201–9. http://dx.doi.org/10.1007/s11244-011-9653-6.

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Oliveira, Adriana S., Jennifer Cueto, María del Mar Alonso-Doncel, et al. "Propane dehydrogenation over Pt and Ga-containing MFI zeolites with modified acidity and textural properties." Catalysis Today 427 (October 24, 2023): 114437. https://doi.org/10.5281/zenodo.13837291.

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A variety of oxides (titanium, tin, calcium, magnesium, and gallium) were supported over nano-crystalline ZSM-5zeolite (n-ZSM-5) by wet impregnation, characterized and evaluated for propane dehydrogenation (PDH) reaction.To enhance the catalytic performance of the oxide-modified n-ZSM-5, Pt nanoparticles were also dispersedover the oxides-supported zeolite catalysts by wet impregnation. Finally, Ga-containing MFI zeolites were used ascatalysts in the PDH. Ga was incorporated into the zeolite by two different methods, via hydrothermal synthesisand via wet impregnation. In the PDH reaction, Pt-c

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Dumbre, Deepa K., Vasant R. Choudhary, Nilesh S. Patil, Balu S. Uphade, and Suresh K. Bhargava. "Calcium oxide supported gold nanoparticles as catalysts for the selective epoxidation of styrene by t-butyl hydroperoxide." Journal of Colloid and Interface Science 415 (February 2014): 111–16. http://dx.doi.org/10.1016/j.jcis.2013.10.016.

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Sigel, Helmut, and Astrid Sigel. "The bio-relevant metals of the periodic table of the elements." Zeitschrift für Naturforschung B 74, no. 6 (2019): 461–71. http://dx.doi.org/10.1515/znb-2019-0056.

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AbstractThe bio-relevant metals (and derived compounds) of the Periodic Table of the Elements (PTE) are in the focus. The bulk elements sodium (Na), potassium (K), magnesium (Mg), and calcium (Ca) from the s-block, which are essential for all kingdoms of life, and some of their bio-activities are discussed. The trace elements of the d-block of the PTE as far as they are essential for humans (Mn, Fe, Co, Cu, Zn, Mo) are emphasized, but V, Ni, Cd, and W, which are essential only for some forms of life, are also considered. Chromium is no longer classified as being essential. From the p-block met

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Faverge, Theo, Antoine Bonnefont, Marian Chatenet, and Christophe Coutanceau. "Electrocatalytic Conversion of Glucose into Hydrogen and Value-Added Compounds on Gold and Nickel Catalysts." ECS Meeting Abstracts MA2023-02, no. 27 (2023): 1421. http://dx.doi.org/10.1149/ma2023-02271421mtgabs.

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Fine chemistry historically relies on the fossil fuel industry, implying oil extraction and refining [1]. The rarefaction of this resource and adverse environmental consequences of its extraction motivate research for alternative sources of chemicals. Low carbon footprint chemicals can be synthesized from nonedible biomass waste [2]; cellulose extracted from biomass can therefore play an important role, being a clean and widely accessible carbon source. One can extract D-Glucose (units that constitute cellulose) from cellulose and obtain numerous chemicals of interest, such as sorbitol [3][4]

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Mishra, Shashank, Erwann Jeanneau, Stéphane Daniele, and Violaine Mendez. "Aminoalkoxo-supported heteroleptic hexanuclear gallium(iii) wheel as a synthon for group 13 heterometallics: A rare sol–gel precursor for mixed Al–Ga oxide as support for gold catalysts." Dalton Transactions 39, no. 32 (2010): 7440. http://dx.doi.org/10.1039/c0dt00485e.

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Rozprawy doktorskie na temat "Gold/Gallium/Calcium catalysts"

Espied, Arnaud. "Approches catalytiques innovantes par des acides de Lewis pour la synthèse de composés cycliques, bicycliques et bioisostères du benzène." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASF082.

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Nous avons mené des recherches approfondies sur plusieurs réactions innovantes dans le domaine de la synthèse organique. Dans un premier temps, nous avons développé une réaction de cyclisation déshydratante ainsi que deux réactions en tandem, initiées par une cyclisation intramoléculaire. Ces réactions se caractérisent par leur haute diastéréosélectivité et l'utilisation d'un catalyseur à base d'un métal du groupe principal, agissant en tant qu'acide de Lewis. Cette approche nous a permis de synthétiser 27 nouveaux composés cycliques, avec des rendements pouvant atteindre 97 %. Dans un deuxièm

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Borteh, Hassan. "Micropatterning of Functional Inorganic Materials with Benign Chemistry Using Peptide Catalysts." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1276883108.

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