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Thermogravimetric analysis (TGA)

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Fuel characteristics and combustion behavior of seaweed-derived hydrochars

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The main objective of this study was to produce hydrochars by HTC of several seaweed species and to investigate the variation of the fuel characteristics, chemical properties, and combustion behavior of hydrochars with process temperature using different analytical methods including elemental analysis, Fourier transform infrared (FTIR) spectroscopy, and thermogravimetric analysis (TGA). Three types of seaweed-origin feedstock were tested in the HTC experiments of this study.

Platinum or nickel nanoparticles decorated on silica spheres by microwave irradiation technique

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The produced silica and supported catalysts were characterized by using BET, X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), and transmission electron microscopy (TEM). Multipoint BET surface area, pore size distribution, and pore volume of the silica were analyzed by this technique. The IR spectra of the materials were recorded using a PerkinElmer Spectrum One FT-IR spectrometer.

Choline derivatives immobilized on silica to catalyze transesterification reaction for production of glycerophosphocholine

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The amount of immobilized choline derivative was measured by thermogravimetric analysis (TGA) using a thermogravimetric analyzer (STA449F3, Netzsch, Germany) under nitrogen flow at a heating rate of 10 K/min. For interesterification, PC (0.0790 g) was added to 10 mL of anhydrous ethanol, and then 0.2 g of the immobilized choline derivative was added to react for 4 h at 45 °C at 250 rpm. Determination of kinetic parameters for free and immobilized choline derivative.

Cu(II) immobilized on Fe 3O4@Agarose nanomagnetic catalyst functionalized with ethanolamine phosphate–salicylaldehyde Schiff base: A magnetically reusable nanocatalyst for preparation of 2-substituted imidazolines, oxazolines, and thiazolines

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The chemical structure and detailed morphology of the prepared catalyst were characterized by techniques including Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDS), vibrating sample magnetometer (VSM), X-ray powder diffraction (XRD), and inductively coupled plasma (ICP), which confirmed the functionalization of Fe 3 O 4 @Agarose nanomagnetic catalyst

Synthesis and characterization of a novel 3-amino-1,2,4-triazole lead(II) coordination polymer

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The thermal decomposition behavior of the complex was investigated between 30 and 700 ◦ C in flowing nitrogen by thermogravimetric analysis (TGA). Heating from 110 to 160 ◦ C led to the loss of an atrz molecule and the observed mass loss was 10.81% (calcd.

Reductant free green synthesis of magnetically recyclable MnFe2O4@SiO2-Ag coreshell nanocatalyst for the direct reduction of organic dye pollutants

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The morphology, composition, and magnetic properties of the resulting MnFe 2 O 4 @SiO 2 -Ag core-shell nanocatalyst were characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), X-ray diffraction (XRD), vibrating sample magnetometer (VSM), and attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR).

Synthesis and characterization of halogen-containing aryl amide polymer-clay nanocomposites

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The thermal characterization of the polymers was carried out by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) under nitrogen atmosphere. The increase in residual mass amount (char yield) could imply a reduction in the polymer’s flammability. 17 This showed that the thermal stability of the poly(BrPMAAm) and poly(FPMAAm) was improved using OSMT and OSMT clays incorporated into the polymer matrix.

Synthesis of new cyclotriphosphazene derivatives bearing Schiff bases and their thermal and absorbance properties

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The thermal stabilities of Schiff base-substituted cyclotriphosphazenes (3a–3d) were determined by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Their UV absorption spectra, which were measured in different solvent systems, showed that λ max of compounds from 3a–3d shifts to the red region..

Selective CO methanation over NiO–Al2O3–ZrO2 and Co3O4–Al2O3–ZrO2 catalysts

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Different techniques were used in order to determine the physical properties of the catalysts, namely X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), N 2 adsorption, thermogravimetric analysis (TGA), temperature programmed reduction (TPR–H 2. BET, multipoint surface areas, pore volumes, and pore diameters of the catalysts were evaluated by a Quantochrome Autosorp 1C/MS device. The oxidation states of the components in the catalyst structure were determined by XPS.

Polyethylene glycol/silica and carbon black/silica xerogel composites as an adsorbent for CO2 capture

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After the structural, morphological, textural, and thermal properties of the silica xerogel composites were investigated by different analyses, CO 2 adsorption capacity and cyclic stability of the xerogel composites were examined with thermogravimetric analysis (TGA).. Preparation of silica xerogel composites. Amine modification of silica xerogel and silica xerogel composites was carried out using the wet impregnation method [27]. Characterization of silica xerogel composites.

Thermogravimetric analysis-based screening of metal (II) chlorides as dopants for the destabilization of solid-state hydrazine borane

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Derivative thermogravimetric (DTG) analysis was deduced with the help of the tool of the software Universal Analysis.

Synthesis and characterization of poly (Vinyl photphonic acid) chitosan using tetraethylene glycoldimethacrylate crosslinker

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Thermogravimetric analysis (TGA) of PVPACS. The calcium chelation capacity of PVPACS hydrogel The degree of dissociation of a polymer is important in terms of its ability to chelate metal ions from the surrounding environment. PVPACS contains acid groups to chelate one Ca 2+ ions. Therefore, there exists a combination of electrostatic effects as well as a chemical association of the calcium with the negatively charged groups.

Carbon nanotubes as nanofillers

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Thermogravimetric Analysis of Binary Compositions. EVA + Cloisite 30B. EVA + 3wt% various NTC’s. Crushed MWNT’s. MWNT’s DWNT’s and . EVA + 3wt% long MWNT’s EVA + 3wt% crushed MWNT’s EVA + 3wt% thin MWNT’s EVA + 3wt% DWNT’s. EVA + 3 wt% Cloisite 30B + x wt% MWNT’s. 499 3wt% 30B + 0.5wt% . 503 3wt% 30B + 1.0wt% . Thermogravimetric Analysis of Binary and Ternary Compositions. Cloisite 30B MWNT’s. 3 wt% Cloisite 30B + MWNT’s. EVA + 3wt% Cloisite 30B EVA + 3wt% MWNT’s Ternary blends.

Characterization and kinetics analysis of the thermal decomposition of the humic substance from hazelnut husk

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The TG-FTIR analysis, performed using a PerkinElmer Pyris STA 600 thermogravimetric analysis &spectrum 1 FTIR spectrometer (PerkinElmer, Inc., Waltham, MA, USA), was conducted to analyze the gases released during the decomposition of the humic substance.TG-FTIR analysis was performed at 25–1000 °C with a heating rate of 10 °Cmin –1 in an air atmosphere. FTIR spectra of the gases transferred from the TG instrument were drawn in the range of 4000–400 cm –1 .

Aerosol-assisted chemical vapor deposition of copper sulfide nanostructured thin film from newly synthesized single-source precursor

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Thermogravimetric analysis of copper(II) complex (2). amounting to 29.82% of the initial weight. The residual weight (29.82%) is higher, but considerably close to the expected composition for CuS (calc. the presence of which was further supported by the XRD analysis of the residue.. X-ray diffraction studies of deposited nanostructured thin film.

Synthesis of Na-, Fe-, and Co-promoted TiO2/multiwalled carbon nanotube composites and their use as a photocatalyst

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The thermal properties of the dried TiO 2 and CNT–TiO 2 nanocomposite samples were examined by TGA- DSC analyses. Thermogravimetric analyses of the samples were performed at a heating rate of 10 ◦ C/min under airflow from room temperature to 900 ◦ C. The TGA-DSC curves of bare TiO 2 , CNT, and CNT–TiO 2. The residual mass was determined as 70% of the initial weight, which was in parallel with the synthesis protocol. Figure 1 also shows the thermogravimetric analysis of the CNT–TiO 2 sample.

Preparation of epoxidized sunflower oil metal soap derivatives and their use as heat stabilizers for polyvinyl chloride

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The thermogravimetric analysis was performed on a thermobalance Mettler Toledo type TGA/SDTA851, in the temperature range of 25 °C to 500 °C, under a nitrogen flow of 40 mL min − 1 , and with a heating rate of 10 °C min − 1. Preparation of PVC films. The samples were prepared using the following amounts: 100 g of PVC stabilized by 5 g of ESO, 1 g of stearic acid as lubricant, 35 g of DEHP as plasticizer, and 3 g of ESO metal soaps. Characterization of PVC films.

Characterization and purification of 1,2,4-triazole-containing phthalocyanines synthesized by microwave method and structure elucidation by spectroscopic techniques

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The thermogravimetric behavior of compounds 8–10 was determined by thermogravimetric analysis method in addition to these spectral methods.. 1 Because these chemicals have a large π- conjugated system, they absorb strongly in the visible region (about 670 nm), giving a characteristic blue-green color. 2 Pcs are well known for their high stability to heat and light, large extinction coefficient in the near IR region, controllable redox potentials, and, most importantly, semiconductor properties.

Preparation and characterization of templated porous carbons from sucrose by one-pot method and application as a CO2 adsorbent

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Thermogravimetric analysis for the S-0.73/T- 1.70/C-850 carbon sample.. The adsorption equilibrium capacity of the ordered mesoporous carbon synthesized of the CO 2 is 1.49 mmol/g at 800 Torr and 298 K [48]. The cyclic stability of the adsorbent was tested by repeated consecutive adsorption and desorption steps. The CO 2 adsorption isotherms of templated porous carbons at 273 K..

Deposition of cadmium sulfide and zinc sulfide thin films by aerosol-assisted chemical vapors from molecular precursors

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Thermogravimetric analysis (TGA) of the precursors 1 and 2 was carried out in a temperature range of 25–500 ◦ C at a heating rate of 10 ◦ C min − 1 under a nitrogen atmosphere. Deposition of CdS films from [Cd(S 2 CN n Bu was carried out at 350–450 ◦ C using 10 mL of 9.5 mM toluene solution with an argon flow rate of 160 sccm for 1 h. The as-deposited films were yellow transparent and very adherent to the glass surface.