Enhanced recovery and recycling of catalyst by post‐impregnation of γ‐Al2O3 with 12‐tungstophosphoric acid for esterification reaction
Sign Up to like & getrecommendations! Published in 2018 at "Canadian Journal of Chemical Engineering"
DOI: 10.1002/cjce.23052
Abstract: 12-tungstophosphoric acid, polyoxometalate with Keggin structure, and γ-Al2O3 were synthesized. Loading of 12-tungstophosphoric acid (HPW) on γ-Al2O3 was performed by post-impregnation method. The catalysts were characterized by XRD, SEM, FTIR, BET, and DRS techniques. According… read more here.
Keywords: esterification reaction; al2o3; post impregnation; reaction ... See more keywords
Heteropoly-12-tungstophosphoric acid H3[PW12O40] over natural bentonite as a heterogeneous catalyst for the synthesis of 3,4-dihydropyrimidin-2-(1H)-ones
Sign Up to like & getrecommendations! Published in 2020 at "Arabian Journal of Chemistry"
DOI: 10.1016/j.arabjc.2020.04.034
Abstract: Abstract Heteropolyacid 12-tungstophosphoric acid H3[PW12O40] (TPA) immobilized over natural bentonite (bent) using the impregnation method. Prepared catalyst were well characterized by XRD, FT-IR and FeSEM. The catalytic activity of three catalysts 10%, 20% and 30%… read more here.
Keywords: synthesis dihydropyrimidin; natural bentonite; catalyst; synthesis ... See more keywords
Tungstophosphoric acid immobilised in SBA-15 as an efficient heterogeneous acid catalyst for the conversion of terpenes and free fatty acids
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DOI: 10.1016/j.micromeso.2017.04.047
Abstract: Abstract Alkoxylation of α−pinene, β−pinene and limonene was performed in the presence of SBA-15-occluded tungstophosphoric acid (HPW). The HPW was immobilised in SBA-15 using the sol-gel method. The catalysts were characterised by N2 adsorption, FT-IR,… read more here.
Keywords: free fatty; pw4 sba; catalyst; immobilised sba ... See more keywords
Nickel exchanged supported 12-tungstophosphoric acid: synthesis, characterization and base free one-pot oxidative esterification of aldehyde and alcohol
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DOI: 10.1039/c8ra08419j
Abstract: The synthesis and characterization of a bi-functional catalyst consisting of nickel and supported 12-tungstophosphoric acid are reported as well as its application in one pot oxidative esterification of benzaldehyde and benzyl alcohol to benzoate ester. read more here.
Keywords: tungstophosphoric acid; synthesis characterization; supported tungstophosphoric; oxidative esterification ... See more keywords
Preparation of tungstophosphoric acid/cerium-doped NH2-UiO-66 Z-scheme photocatalyst: a new candidate for green photo-oxidation of dibenzothiophene and quinoline using molecular oxygen as the oxidant
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DOI: 10.1039/d1nj00328c
Abstract: The goal of this study was to introduce an effective visible-light induced photocatalytic system with a good ability for photocatalytic oxidative desulfurization (PODS) and denitrogenation (PODN) using molecular oxygen (O2) as an oxidant. read more here.
Keywords: tungstophosphoric acid; using molecular; molecular oxygen; oxygen oxidant ... See more keywords
Assessing the Catalytic Potential of 12-tungstophosphoric Acid Supported on MCM-41 for the Gas Phase Etherification of Alcohols
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DOI: 10.37358/rc.17.7.5692
Abstract: The gas-phase etherification reaction of ethanol with tert-butyl alcohol (TBA) was investigated for the production of an oxygenated fuel additive. The reaction was carried out in a continuous flow reactor, in the presence of 12-tungstophosphoric… read more here.
Keywords: phase etherification; gas phase; tungstophosphoric acid; gas ... See more keywords