Synthesis and characterization of sulfamic acid supported on Fe3O4 nanoparticles: A green, versatile and magnetically separable acidic catalyst for oxidation reactions and Knoevenagel condensation
Sign Up to like & getrecommendations! Published in 2018 at "Applied Organometallic Chemistry"
DOI: 10.1002/aoc.3927
Abstract: Sulfamic acid immobilized on diethylenetriamine functionalized Fe3O4 nanoparticles (SA-DETA-Fe3O4) was successfully prepared and characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), vibrating sample magnetometer (VSM), thermo gravimetric analysis (TGA), X-Ray diffraction (XRD) and… read more here.
Keywords: catalyst; knoevenagel condensation; magnetically separable; sulfamic acid ... See more keywords
Structure, Morphology and Optical Properties of TiO2 Films Formed by Anodizing in a Mixed Solution of Citric Acid and Sulfamic Acid
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Materials Engineering and Performance"
DOI: 10.1007/s11665-017-2818-0
Abstract: TiO2 films of 50-180 nm thickness were formed at room temperature by anodization of titanium metal in a mixture of citric acid and sulfamic acid in the potential range of 5-30 V. The films so obtained were… read more here.
Keywords: citric acid; acid sulfamic; tio2 films; structure ... See more keywords
Preparation and characterization of intumescent flame retardant biodegradable poly(lactic acid) nanocomposites based on sulfamic acid intercalated layered double hydroxides
Sign Up to like & getrecommendations! Published in 2017 at "Fibers and Polymers"
DOI: 10.1007/s12221-017-1153-2
Abstract: A novel sulfamic acid intercalated MgAl-LDH (SA-LDH) was prepared by intercalating NH3SO3− into MgAl-layered double hydroxides (LDH), and it was then introduced into poly(lactic acid) (PLA) resin in association with intumescent flame retardant (IFR) by… read more here.
Keywords: flame retardant; layered double; flame; sulfamic acid ... See more keywords
Biosugar Production from Gracilaria verrucosa with Sulfamic Acid Pretreatment and Subsequent Enzymatic Hydrolysis
Sign Up to like & getrecommendations! Published in 2018 at "Biotechnology and Bioprocess Engineering"
DOI: 10.1007/s12257-018-0090-2
Abstract: In this study, sulfamic acid-catalyzed pretreatment and subsequent enzymatic hydrolysis was conducted to produce biosugar from the marine macro-alga Gracilaria verrucosa. Sulfamic acid has dual active sites and is a green catalyst. Optimized sulfamic acid… read more here.
Keywords: sulfamic acid; pretreatment subsequent; subsequent enzymatic; enzymatic hydrolysis ... See more keywords
Insights on the efficiency of bifunctional solid organocatalysts in converting xylose and biomass into furfural in a GVL-water solvent
Sign Up to like & getrecommendations! Published in 2019 at "Industrial Crops and Products"
DOI: 10.1016/j.indcrop.2019.06.017
Abstract: Abstract A bifunctional solid organocatalyst, sulfamic acid, was evaluated to produce furfural from xylose and different biomass in an environmentally friendly system comprising Gamma-Valerolactone (GVL) and water. The highest yield (70.19%) of furfural was achieved… read more here.
Keywords: biomass; bifunctional solid; sulfamic acid; gvl water ... See more keywords
Fe3-xTixO4-supported sulfamic acid nanoparticles: New magnetic nanocatalyst for the synthesis of hexahydroquinolines
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Organometallic Chemistry"
DOI: 10.1016/j.jorganchem.2019.05.020
Abstract: Abstract A novel acidic nanocatalytic system, sulfamic acid-functionalized Fe3-xTixO4 magnetic nanoparticles (MNPs), were synthesized through one-pot reaction of Fe3-xTixO4 MNPs with 3-chloropropyltrimethoxysilane and imidazolidine-2,4-dione followed by functionalization with chlorosulfonic acid. The structure of this newly… read more here.
Keywords: synthesis; fe3 xtixo4; xtixo4 supported; sulfamic acid ... See more keywords
The effects of ammonium sulfate and sulfamic acid on the surface acidity of sulfated zirconia
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Saudi Chemical Society"
DOI: 10.1016/j.jscs.2018.06.006
Abstract: Abstract In this work, sulfated zirconia (SZ) was prepared by a solvent-free method, ammonium sulfate ((NH4)2SO4) and sulfamic acid (NH2SO3H) were as sulfur sources, respectively. The resulting catalysts were characterized by powder X-ray diffraction (XRD),… read more here.
Keywords: nh4 2so4; ammonium sulfate; sulfamic acid; effects ammonium ... See more keywords
Zwitterionic sulfamic acid functionalized nanoclay: A novel nanocatalyst for the synthesis of dihydropyrano[2,3-c]pyrazoles and spiro[indoline-3,4´-pyrano[2,3-c]pyrazole] derivatives
Sign Up to like & getrecommendations! Published in 2017 at "Journal of The Taiwan Institute of Chemical Engineers"
DOI: 10.1016/j.jtice.2016.12.010
Abstract: Abstract Zwitterionic sulfamic acid functionalized nanoclay (MMT-ZSA) was prepared with montmorillonite K10 as template, 3- aminopropyltriethoxysilane as linker and chlorosulfonic acid as a SO 3 H source. The physical and chemical properties of zwitterionic nanoclay… read more here.
Keywords: acid functionalized; synthesis dihydropyrano; functionalized nanoclay; sulfamic acid ... See more keywords
An automated spectrophotometric method for the direct determination of nitrite and nitrate in seawater: Nitrite removal with sulfamic acid before nitrate reduction using the vanadium reduction method
Sign Up to like & getrecommendations! Published in 2020 at "Microchemical Journal"
DOI: 10.1016/j.microc.2020.105272
Abstract: Abstract A reverse flow injection method was established for simultaneous spectrophotometric determination of NO2− and NO3− in seawater. Vanadium chloride, a nontoxic and soluble reductant, was used to replace highly toxic cadmium for the reduction… read more here.
Keywords: seawater; reduction; determination; method ... See more keywords
Efficient synthesis of unsymmetrical sulfamides from sulfamic acid salts by activation with triphenylphosphine ditriflate
Sign Up to like & getrecommendations! Published in 2019 at "Tetrahedron"
DOI: 10.1016/j.tet.2019.02.063
Abstract: Abstract A general approach to prepare unsymmetrical sulfamides is described. This method relies on the activation of sulfamic acid salts with triphenylphosphine ditriflate, and subsequent trapping by a nucleophilic amine. This strategy improves access to… read more here.
Keywords: efficient synthesis; unsymmetrical sulfamides; acid salts; sulfamic acid ... See more keywords
Synthesis of N-Substituted Sulfamate Esters from Sulfamic Acid Salts by Activation with Triphenylphosphine Ditriflate.
Sign Up to like & getrecommendations! Published in 2017 at "Organic letters"
DOI: 10.1021/acs.orglett.7b03059
Abstract: A general approach to access sulfamate esters through preparation of sulfamic acid salts, subsequent activation with triphenylphosphine ditriflate, and nucleophilic trapping is disclosed. The method proceeds in modest to excellent yields to incorporate nucleophiles derived… read more here.
Keywords: acid salts; sulfamate esters; activation triphenylphosphine; triphenylphosphine ditriflate ... See more keywords