Articles with "hpw" as a keyword



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Oxidative desulfurization of dibenzothiophene via high-shear mixing with phosphotungstic acid: the influence of calcination temperature on kinetics and catalytic activity

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Published in 2019 at "Clean Technologies and Environmental Policy"

DOI: 10.1007/s10098-019-01717-w

Abstract: The mixing-assisted oxidative desulfurization (MAOD) of model fuel was performed where the effect of calcination temperature on the catalytic activity of phosphotungstic acid (HPW) was evaluated. The MAOD system utilized tetraoctylammonium bromide as phase transfer… read more here.

Keywords: catalytic activity; calcination temperature; hpw; calcination ... See more keywords
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Synthesis of biofuel via levulinic acid esterification over porous solid acid consisting of tungstophosphoric acid and reduced graphene oxide

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Published in 2017 at "Research on Chemical Intermediates"

DOI: 10.1007/s11164-017-3012-6

Abstract: Reduced graphene oxide (rGO) was synthesized by chemical reduction of graphene oxide with hydrazine hydrate and used as supports to prepare a series of H3PW12O40 (HPW)-based porous solid acids for the first time. Esterification of… read more here.

Keywords: graphene oxide; levulinic acid; reduced graphene; acid ... See more keywords
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Homogeneously dispersed HPW/graphene for high efficient catalytic oxidative desulfurization prepared by electrochemical deposition.

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Published in 2019 at "Applied Surface Science"

DOI: 10.1016/j.apsusc.2019.04.156

Abstract: Abstract In this work, reduced graphene oxide (rGO) with homogeneously dispersed phosphotungstate acid (HPW), were directly fabricated by using electrochemical strategy. In this one-pot route, the reduction of graphene oxide (GO) and HPW anchoring on… read more here.

Keywords: oxidative desulfurization; hpw; high efficient; rgo ... See more keywords
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Immobilized phosphotungstic acid for the construction of proton exchange nanocomposite membranes with excellent stability and fuel cell performance

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Published in 2020 at "International Journal of Hydrogen Energy"

DOI: 10.1016/j.ijhydene.2020.04.159

Abstract: Abstract Phosphotungstic acid (HPW) has a good potential as nanofillers in nanocomposite proton exchange membrane with the prerequisite of solving the leakage issue. It is immobilized onto mesoporous graphitic carbon nitride (mg-C3N4) nanosheets surface, and… read more here.

Keywords: cell performance; fuel cell; spaes; hpw ... See more keywords
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Microwave co-pyrolysis for simultaneous disposal of environmentally hazardous hospital plastic waste, lignocellulosic, and triglyceride biowaste.

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Published in 2021 at "Journal of hazardous materials"

DOI: 10.1016/j.jhazmat.2021.127096

Abstract: Microwave co-pyrolysis was examined as an approach for simultaneous reduction and treatment of environmentally hazardous hospital plastic waste (HPW), lignocellulosic (palm kernel shell, PKS) and triglycerides (waste vegetable oil, WVO) biowaste as co-feedstock. The co-pyrolysis… read more here.

Keywords: microwave pyrolysis; pyrolysis; liquid oil; environmentally hazardous ... See more keywords
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Direct synthesis of ordered meso/macrostructured phosphotungstic acid/SiO2 by EISA method and its catalytic performance of fuel oil

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Published in 2018 at "Materials Research Bulletin"

DOI: 10.1016/j.materresbull.2017.08.034

Abstract: Abstract A series of ordered meso/macrostructured phosphotungstic acid (HPW)/SiO 2 materials were synthesized by evaporation-induced self-assembly (EISA) method using nonionic surfactant (P123) and monodispersed polystyrene (PS) spheres as templates. SEM images displayed close-packed ordered macropores… read more here.

Keywords: phosphotungstic acid; eisa method; macrostructured phosphotungstic; meso macrostructured ... See more keywords
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Friedel-Crafts self-crosslinking of sulfonated poly(etheretherketone) composite proton exchange membrane doped with phosphotungstic acid and carbon-based nanomaterials for fuel cell applications

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Published in 2020 at "Journal of Membrane Science"

DOI: 10.1016/j.memsci.2020.118381

Abstract: Abstract In this work, self-crosslinked sulfonated polyether etherketone membrane (C-SPEEK) was synthesized by Friedel-Crafts alkylation at 130 °C with chloromethylated sulfonated polyether etherketone (SPEEK-Cl). The water uptake (WU) of the C-SPEEK was 47.75% with a 8.69%… read more here.

Keywords: carbon; speek; self crosslinking; membrane ... See more keywords
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Nanocomposite proton exchange membranes based on phosphotungstic acid immobilized by polydopamine-coated halloysite nanotubes

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Published in 2019 at "Polymer Testing"

DOI: 10.1016/j.polymertesting.2018.11.038

Abstract: Abstract In this work, sulfonated poly(ether ether ketone) (SPEEK) nanocomposite membranes were prepared with high loading of phosphotungstic acid (HPW) immobilized by polydopamine coated halloysite nanotubes (DHNTs). XPS and FTIR analysis revealed the formation of… read more here.

Keywords: proton; hpw; coated halloysite; immobilized polydopamine ... See more keywords
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Polyoxometalate intercalated La-doped NiFe-LDH for efficient removal of tetracycline via peroxymonosulfate activation

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Published in 2021 at "Separation and Purification Technology"

DOI: 10.1016/j.seppur.2021.119113

Abstract: Abstract In this work, a series of La-doped NiFe-layered double hydroxides containing a novel Keggin type polyoxometalate interlayer (NiFeLa{HPW}-LDH) were synthesized and initially applied as heterogeneous catalyst for peroxymonosulfate (PMS) activation. Characterizations indicated that polyoxometalate… read more here.

Keywords: activation; iii; iii iii; hpw ... See more keywords
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Synthesis and characterization of a novel BiOBr/HPW/Au for the enhanced photocatalytic activity

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Published in 2020 at "Journal of Fuel Chemistry and Technology"

DOI: 10.1016/s1872-5813(20)30084-0

Abstract: Abstract In this study, a novel BiOBr/HPW/Au photocatalyst was prepared via hydrothermal method followed by photo-reduction method. The characterization results indicated the successful introduction of HPW and Au in BiOBr. BiOBr/HPW/Au exhibited excellent photocatalytic activity… read more here.

Keywords: photocatalytic activity; novel biobr; biobr; biobr hpw ... See more keywords
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Preparation, characterization and catalytic performance of HPW/aEVM catalyst on oxidative desulfurization

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Published in 2017 at "RSC Advances"

DOI: 10.1039/c6ra26587a

Abstract: Expanded vermiculite (EVM) was prepared, treated with acid (aEVM) and incorporated with H3PW12O40 (HPW) by an ordinary impregnation method. Various characterizations of the HPW/aEVM catalyst indicated that the HPW was dispersed homogeneously on the aEVM… read more here.

Keywords: hpw aevm; characterization catalytic; preparation characterization; aevm catalyst ... See more keywords