Phosphotungstic Acid Based Mesoporous Silica Catalysts for the Preparation of Soybean Oil-Based Polyols
Sign Up to like & getrecommendations! Published in 2017 at "Catalysis Letters"
DOI: 10.1007/s10562-016-1965-5
Abstract: Phosphotungstic acid (HPW) was added to mesoporous silica (MS) to form catalysts by two distinct methods, i.e., a direct-synthesis method and an impregnation method. The catalysts were evaluated in the synthesis of soybean oil-based polyols.… read more here.
Keywords: based polyols; oil based; mesoporous silica; phosphotungstic acid ... See more keywords
Phosphotungstic Acid Immobilized on Imidazole Poly(ionic liquid) for Isomerization of α-Terpineol to 1,8-Cineole
Sign Up to like & getrecommendations! Published in 2017 at "Catalysis Letters"
DOI: 10.1007/s10562-017-2148-8
Abstract: Phosphotungstic acid (PW) was successfully immobilized on imidazole poly(ionic liquid) (PIL) via ion-exchange for the catalytic isomerization of α-terpineol to 1,8-cineole. TG, XRF, FT-IR, XRD, NH3-TPD and DSA were subsequently used to characterize the PW/PIL… read more here.
Keywords: ionic liquid; immobilized imidazole; phosphotungstic acid; terpineol ... See more keywords
Catalytic Conversion of Biomass for Aromatics Over HZSM-5 Modified by Dawson-Type Phosphotungstic Acid
Sign Up to like & getrecommendations! Published in 2019 at "BioEnergy Research"
DOI: 10.1007/s12155-019-10075-w
Abstract: The multi-functional zeolites modified with different phosphotungstic acid (PW) ratios were prepared and characterized. Thermogravimetric tests coupled with kinetics analysis were performed to evaluate catalytic pyrolysis behavior of biomass; The presence of HZSM-5 inhibited the… read more here.
Keywords: dawson; biomass; catalytic conversion; phosphotungstic acid ... See more keywords
Catalytic Conversion of Glucose to 5-(Hydroxymethyl)furfural Over Phosphotungstic Acid Supported on SiO2-Coated Fe3O4
Sign Up to like & getrecommendations! Published in 2018 at "Waste and Biomass Valorization"
DOI: 10.1007/s12649-018-0242-9
Abstract: There is a significant interest in valorization of biomass and its derivatives into chemicals. In this work, glucose derived from biomass was converted into 5-(hydroxymethyl)furfural (HMF). Phosphotungstic acid (PHA) supported on magnetic nanoparticles Fe3O4 coated… read more here.
Keywords: glucose; phosphotungstic acid; pha; hydroxymethyl furfural ... See more keywords
Ball-milling Synthesis of Tetrahydroquinolines via ‘One-pot’ Three-component Diels-Alder Reaction Catalyzed by Phosphotungstic Acid
Sign Up to like & getrecommendations! Published in 2020 at "Chemical Research in Chinese Universities"
DOI: 10.1007/s40242-020-9019-3
Abstract: We reported an economic and practical ball-milling method for the synthesis of tetrahydroquinoline derivatives via a ‘one-pot’ three-component Diels-Alder reaction of anilines, aldehydes and alkenes catalyzed by phosphotungstic acid at room temperature. For this reaction,… read more here.
Keywords: ball milling; pot; phosphotungstic acid; reaction ... See more keywords
Electron-hole interactions in choline-phosphotungstic acid boosting molecular oxygen activation for fuel desulfurization
Sign Up to like & getrecommendations! Published in 2019 at "Applied Catalysis B: Environmental"
DOI: 10.1016/j.apcatb.2018.09.038
Abstract: Abstract Many studies have been conducted regarding the separation behavior of carriers (electrons and holes) because of involving the generation of superoxide radicals (O2− ), hydroxyl radicals (HO ), and hydrogen peroxide (H2O2) in the… read more here.
Keywords: activation; ch3 hpw; choline phosphotungstic; desulfurization ... See more keywords
Acid modification enhances selective catalytic reduction activity and sulfur dioxide resistance of manganese-cerium-cobalt catalysts: Insight into the role of phosphotungstic acid.
Sign Up to like & getrecommendations! Published in 2021 at "Journal of colloid and interface science"
DOI: 10.1016/j.jcis.2021.06.114
Abstract: Improving the SO2 resistance of catalysts is crucial to driving commercial applications of Mn-based catalysts. In this work, the phosphotungstic acid (HPW) modification strategy was applied to improve the N2 selectivity, SO2 and H2O resistance… read more here.
Keywords: so2; phosphotungstic acid; resistance; acid ... See more keywords
Solvent free one pot synthesis of amidoalkyl naphthols over phosphotungstic acid encapsulated montmorillonite clay catalysts
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Saudi Chemical Society"
DOI: 10.1016/j.jscs.2015.10.007
Abstract: Abstract Montmorillonite KSF clay was effectively modified by the encapsulation of phosphotungstic acid into the clay layers via sonication followed by incipient wet impregnation method. The prepared catalysts were characterized by X-ray diffraction (XRD), Fourier-transform… read more here.
Keywords: one pot; synthesis amidoalkyl; amidoalkyl naphthols; phosphotungstic acid ... See more keywords
Direct synthesis of ordered meso/macrostructured phosphotungstic acid/SiO2 by EISA method and its catalytic performance of fuel oil
Sign Up to like & getrecommendations! 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
Ring-closing depolymerization of polytetrahydrofuran to produce tetrahydrofuran using heteropolyacid as catalyst
Sign Up to like & getrecommendations! Published in 2017 at "Polymer Degradation and Stability"
DOI: 10.1016/j.polymdegradstab.2017.08.001
Abstract: Abstract This paper mainly explores the degradation of polytetrahydrofuran to prepare tetrahydrofuran. Various catalysts including different Lewis' acids and protonic acids are investigated in the degradation process of polytetrahydrofuran. The results show that heteropolyacids exhibit… read more here.
Keywords: degradation; catalyst; tetrahydrofuran; phosphotungstic acid ... See more keywords
Nanocomposite proton exchange membranes based on phosphotungstic acid immobilized by polydopamine-coated halloysite nanotubes
Sign Up to like & getrecommendations! 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