Perkin-Elmer thermogravimetric analyzer

TGA analysis was carried out on a Perkin-Elmer Thermogravimetric analyzer, model TGS-2 at a heating rate of 10°min. 

The thermal stability of PEtG was obtained using a Perkin Elmer thermogravimetric analyzer (TGA7) at the heating flow of lOX/min and under N2. 

A Perkin-Elmer thermogravimetric analyzer (TGA) was used to determine the hydrogen desorption kinetics at atmospheric pressure. This instruntent was located in another glove box under nitrogen atmosphere to prevent any exposure of the samples to air and moisture. Samples were heated to 2S0°C at a ramping rate of S°C/min under 1 atm of He, using an initial 1 minute delay to ensure an environment of pure He. Approximately 10 mg of sample were used in the TGA. 

Temperature programmed reduction (TPR), temperature programmed Ar heating (TPAr) and extent of reduction experiments were all performed in a Perkin Elmer thermogravimetric analyzer (TGA) Model TGA 7 described elsewhere [22]. H2 chemisorption measurements were eonducted using a flow chemisorption method and apparatus described by Jones and Bartholomew [24]. Activity measurements and high-pressure steam treatments were conducted in a fixed-bed microreactor described elsewhere [22]. A Micromeritics Gemini 2360 surface analyzer was used to measure N2 adsorption at liquid N2 temperature for BET surface area measurements. A Micromeritics Tri-Star 3000 analyzer with N2 adsorption was used to obtain the pore size distribution. 

S.3 Thermogravimetric Analysis The thermal properties of the membranes were evaluated using a Perkin-Elmer thermogravimetric analyzer (TGA-7) interfaced... 

The XPS data were acquired on a Physical Electronics model 5400 XPS system using a Mg anode. For survey spectra, the pass energy was 44.75 eV with a step size of 0.5 eV. The time per step was 50 msec. High resolution spectra were acquired with a pass energy of 35.75 eV and step size of 0.1 eV, The time per step was 50 msec. Thermogravimetric data were obtained on a Perkin-Elmer, Diamond Thermogravimetric/ Differential Thermal Analyzer (TG/DTA) with Pyris software, version 7.0-0.0110. 

Powder X-ray diffraction (XRD) patterns of the samples were carried out on a Rigaku RTP300-RC X-ray diffractometer with Cu Ka ( =1.541 SA) radiation. Infrared spectra (IR) were recorded by the KBr method on a Perkin-Elmer 1600 Series FTIR infrared spectrometer. Thermogravimetric (TG) and differential thermal analysis (DTA) curves were obtained at a heating rate of 10°C/min in air on a Seiko SSC5200 thermal analyzer. Scanning electron microscopy (SEM) was performed on a Hitachi S-530 scanning electron microscope. 

Thermogravimetric analyses (TGA) were carried out with a Perkin-Elmer TGS-2 analyzer at a nitrogen flow rate of 50 cmmin. The temperature program for the analysis was 50 °C for 10 min followed by an increase of 5 °C/min to 600 °C. 

The solids were characterized by X-ray diffraction using a Siemmens D-500 diffractometer equipped with a copper anode and a nickel filter. The deposition of carbon was studied by thermogravimetric analysis (TGA) using a Perkin-Elmer 1700 TGA analyzer. For the TGA runs the sample was heated at 10°C/min in air (2.0 1/h) from ambient temperature (20 C) to 850°C the procedure was repeated to eliminate Ae effect of adsorbed water. 

A 7-mg sample of naphazoline hydrochloride was heated using a Perkin-Elmer System 4 Thermogravimetric Analyzer from 40°C to 298°C at a linear rate of 20°C/min. The dmg substance exhibited a gradual weight loss near the melting range (Figure 10). 

Perkin-Elmer TGS-2 thermogravimetric analyzer, heating rate 10°Cmin, sample mass 1-4 mg, Nj atmosphere (40 ml min ). 

Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) data were obtained by using a Perkin-Elmer DSC-7 differential scaiming calorimeter and a TGA-7 thermogravimetric analyzer interfaced with a TAC 7 thermal analysis controller and a PE-7700 data station. DSC and TGA samples were heated at a rate of 10 °C/min with purified Nj gas flow of 20 cmVmin. 

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