The states and effects of copper in Keggin-type heteropolyoxometalate catalysts on oxidation of methacrolein to methacrylic acid
Sign Up to like & getrecommendations! Published in 2017 at "Molecular Catalysis"
DOI: 10.1016/j.mcat.2017.04.031
Abstract: Abstract Finding out the mechanism how copper improves the catalytic performance is important to design efficient heteropolyoxometalate catalysts for clean production of methacrylic acid. In this work, copper containing heteropolyoxometalate catalysts (CsCu x H 3–2… read more here.
Keywords: keggin; methacrylic acid; copper; heteropolyoxometalate ... See more keywords
A rare oxidation of camphene to acid and aldehyde in the presence of Lacunar Keggin heteropoly salts
Sign Up to like & getrecommendations! Published in 2019 at "Molecular Catalysis"
DOI: 10.1016/j.mcat.2019.110589
Abstract: Abstract In this work, monolacunary Keggin heteropolyacid salts containing sodium as the countercation were synthesized and evaluated as catalysts on the camphene oxidation with hydrogen peroxide. Under reaction conditions (i.e., 333 K, air atmosphere, CH3CN solution),… read more here.
Keywords: keggin; oxidation camphene; lacunar keggin; rare oxidation ... See more keywords
Thermal stability of mesoscopic compounds of cetyltrimethylammonium and Keggin metatungstates.
Sign Up to like & getrecommendations! Published in 2017 at "Dalton transactions"
DOI: 10.1039/c7dt02073b
Abstract: A hybrid surfactant/polyoxometalate compound was synthesized by combining isopolytungstate anions with the cationic surfactant cetyltrimethylammonium bromide (CTA-Br) to produce a hierarchical compound that we identify as (CTA)7[H2W12O40]Cl·2H2O. At room temperature the compound consisted of hexagonally… read more here.
Keywords: compounds cetyltrimethylammonium; keggin; stability mesoscopic; stability ... See more keywords
DFT study of α-Keggin, lacunary Keggin, and ironII–VI substituted Keggin polyoxometalates: the effect of oxidation state and axial ligand on geometry, electronic structures and oxygen transfer
Sign Up to like & getrecommendations! Published in 2020 at "RSC Advances"
DOI: 10.1039/d0ra05189f
Abstract: Herein, the geometry, electronic structure, Fe–ligand bonding nature and simulated IR spectrum of α-Keggin, lacunary Keggin, iron(II/III)-substituted and the important oxidized high-valent iron derivatives of Keggin type polyoxometalates have been studied using the density functional… read more here.
Keywords: lacunary keggin; keggin lacunary; keggin; geometry electronic ... See more keywords
Light-induced dissolution and concomitant crystallization of a Keggin-type polyoxometalate mimicking a naturally occurring phenomenon.
Sign Up to like & getrecommendations! Published in 2023 at "Chemical communications"
DOI: 10.1039/d2cc03273b
Abstract: A suspension of a yellow polycrystalline compound [PPh4]3[PMoVI12O40] in N-methylformanilide (NMF) (in which it is not soluble), on irradiation with sunlight, initiates dissolution via its reduction followed by its crystallization leading to the isolation of… read more here.
Keywords: light induced; dissolution; pph4 pmovi12o40; c6h5 ncho ... See more keywords
Synthesis and polypyrrole-loading study of antifungal medicine fluconazole functionalized Keggin polyoxotungstates
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Coordination Chemistry"
DOI: 10.1080/00958972.2018.1427234
Abstract: Abstract To rich the coordination polymer and polyoxometalate (POM) chemistry, two new hybrid compounds based on Keggin POMs with antifungal medicine fluconazole (Hfkz = [1-(2,4-difluorophenyl)-1,1-bis [(1H-1,2,4-triazol-1-yl)-methyl]methanol]), [Ag4(Hfkz)2][PW12O40] (AgFkzPW12) and [Ag4(Hfkz)2][SiW12O40] (AgFkzSiW12), have been successfully synthesized… read more here.
Keywords: medicine; medicine fluconazole; keggin; chemistry ... See more keywords
Study on the Synthesize, Characterization, and Conductive Performance of Nickelzircomolybdnum Heteropoly Acid Salt with Keggin Structure
Sign Up to like & getrecommendations! Published in 2019 at "Advances in Polymer Technology"
DOI: 10.1155/2019/9501593
Abstract: A novel heteropoly acid salt, Na6[Ni(Mo11ZrO39)]·20H2O, has been synthesized by the means of acidification and adding the reactants into the solution step by step. The heteropoly compound was characterized by elemental analysis, TGA/DSC, infrared spectrum,… read more here.
Keywords: heteropoly acid; heteropoly; acid salt; keggin ... See more keywords
Direct Benzyl Alcohol and Benzaldehyde Synthesis from Toluene over Keggin-Type Polyoxometalates Catalysts: Kinetic and Mechanistic Studies
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Chemistry"
DOI: 10.1155/2019/9521529
Abstract: The catalytic activity of various Keggin polyoxometalate catalysts has been investigated in the gas-phase partial oxidation of toluene to produce benzyl alcohol and benzaldehyde. The catalyst systems HPMo12O40, HPMo11VO40, FePMo12O40, and PMo11FeO39 were prepared and… read more here.
Keywords: toluene; benzyl alcohol; keggin; alcohol benzaldehyde ... See more keywords
Effects of electrostatic neutralization of Keggin Fe13 on the removal of micro and nano plastic.
Sign Up to like & getrecommendations! Published in 2022 at "Journal of hazardous materials"
DOI: 10.2139/ssrn.4199872
Abstract: The successful preparation and identification of Keggin-structure Fe13 clusters in recent years further enriched the potential application scenarios of ferric coagulants. Comparing the coagulation efficiencies and mechanisms of Fe13 in the removal of nano/microplastics with… read more here.
Keywords: fe13 removal; fe13; electrostatic neutralization; nano plastic ... See more keywords