study on characterization of outgassing of graphite

Research Article Photocatalytic Activity in Phenol Removal of Water from Graphite

Graphite oxide (GO) was synthesized from graphite by an established method [, ]; however, the reaction time was modi ed to determine the in uence of this parameter on the oxidation process and therefore on the structure of GO and then on used were graphite

Journal of The Electrochemical Society

The Electrochemical Society was founded in 1902 to advance the theory and practice at the forefront of electrochemical and solid state science and technology, and allied subjects. JES is the flagship journal of The Electrochemical Society. Published continuously

Nine years of carbon coating development for the SPS upgrade: achievements and heritage

CERN-ACC-2016-0010 15/12/2015 CERN-ACC-2016-0010 Mauro.Taborellicern.ch 1 Nine years of carbon coating development for the SPS upgrade: achievements and heritage. Mauro Taborelli, Paolo. Chiggiato, Pedro Costa Pinto, Paul Cruikshank (CERN)

Lubricants

In this study, powder technology was used to obtain Fe-SiC composites in which SiC particles act as precursors to generate a large amount of turbostratic graphite dispersed in the composite matrix. The selection of the alloy composition was studied employing Thermo-Calc software to obtain the temperature and composition range for the stabilization of the graphite phase in iron with a high

Reduction of background scattered light in vacuum

The outgassing properties of the coating are measured to be less than that of the vacuum system used to test the coating, which is limited to 3 10 −8 mbar L cm −2 s −1. The coating is applied to a vacuum chamber housing a rubidium prism MOT, and its vacuum compatibility is assessed and compared to an identical non-coated system.

Highly energetic compositions based on functionalized

Highly energetic compositions based on functionalized carbon nanomaterials Qi-Long Yan a, Michael Gozin * a, Feng-Qi Zhao b, Adva Cohen a and Si-Ping Pang c a Center for Nanoscience and Nanotechnology, Faculty of Exact Science, Tel Aviv University, Tel Aviv 69978, Israel.

Study on characterization of outgassing of graphite

2013/6/1Graphite is a widely used structural material for high temperature and high vacuum applications in furnaces handling corrosive materials or plasmas. The porosity, density, dimensions, impurities along with the history of graphitization, handling and storage of graphite dictate the outgassing characteristics. Graphite plates of density 1.78 g/cc were outgassed up to 1200 C in

Adsorption characteristics of Bisphenol

In addition, the outgassing process can produce a large amount of lone pair electrons and σ electron pairs on the graphite layer of the activated carbon. This can not only significantly increase the Lewis base but also lead to greater surface oxidation stability of the activated carbon.

Outgassing of space quality carbons and graphites

article{osti_5280830, title = {Outgassing of space quality carbons and graphites}, author = {Alexander, C A}, abstractNote = {Experiments show that conditions exist whereby graphite can be baked out sufficiently so that further gas evolution is not of significance.

(PDF) Study on characterization of outgassing of graphite

In a nutshell, the present study will serve as a baseline data for estimating the load on the vacuum pumps due to the presence of the graphite and will be compared to the subsequent improvements made to minimize the outgassing load.

Adsorption characteristics of Bisphenol

In addition, the outgassing process can produce a large amount of lone pair electrons and σ electron pairs on the graphite layer of the activated carbon. This can not only significantly increase the Lewis base but also lead to greater surface oxidation stability of the activated carbon.

Reliability and Other Space

In this study, PA capacitors with stacked and laminated structures were only for reliability, outgassing, evaluated and electrical characterization before and after thermal vacuum cycling. A Ta polymer capacitor was also included in all characterizations as a

Plasma Processes and Polymers: Vol 14, No 8

This work examines wood substrate outgassing effects during treatment in dielectric barrier discharges operated in nominally pure helium. Using a combination of electrical characteristics, optical emission spectroscopy, and collisional‐radiative modeling, outgassing of the samples placed on the bottom electrode was monitored for the complete duration of plasma exposure.

CO2 and O2 Evolution at High Voltage Cathode Materials

A three-electrode differential electrochemical mass spectrometry (DEMS) cell has been developed to study the oxidative decomposition of electrolytes at high voltage cathode materials of Li-ion batteries. In this DEMS cell, the working electrode used was the same as the cathode electrode in real Li-ion batteries, i.e., a lithium metal oxide deposited on a porous aluminum foil current collector

(PDF) Development and Characterization of a High

A minimum characterization of 50% increase in the primary ion signal output was ob- tained at discharge currents 8 mA. Previous experience has The HT-PTR-MS was calibrated using a calibration gas stan- shown that higher discharge currents reduce the lifetime of dard (Air Env., Denver, CO, USA) containing 1.00 ppm of PTR-MS ion sources.

10.1016/j.jcis.2009.06.017

It is reiterated that outgassing (a preparatory step in adsorptive characterization of samples) was performed at temperatures between 100 C and 600 C. Temperatures in the proximity of 100 C will only remove weakly physisorbed gases and vapors; however, higher temperatures (300–600 C) might also alter the sample chemistry [42] .

Research Article Photocatalytic Activity in Phenol Removal of Water from Graphite

Graphite oxide (GO) was synthesized from graphite by an established method [, ]; however, the reaction time was modi ed to determine the in uence of this parameter on the oxidation process and therefore on the structure of GO and then on used were graphite

Photocatalytic Activity in Phenol Removal of Water from

Thus, in this study, the conventional times used for the oxidation of graphite and degassing in an ultrasonic bath to obtain graphene oxide were modified. The structural changes in the carbon materials were evaluated based on their photocatalytic activity in the removal of an organic pollutant in water (removing up to 38#x25; of phenol).

WHITE PAPER Direct Chemical Analysis of Ceramic Matrix Composites

grade graphite. 5 In this study, FF-GDMS was evaluated for its applicability for chemical analysis of carbon fiber–reinforced carbon composites (CFRCs). Our findings demonstrate the advantages of this method for analysis of composite samples with

(PDF) Photoemission and x

The aim of the study is to understand the atomic and electronic structure of this compound, information that would be useful in the characterization of boron carbide thin films, coatings, and composites. A discussion of the spectral features in terms of a simple

Characterization and Process Development of Cyanate

Cyanate ester resins offer advantages as composite matrices because of their high thermal stability, low outgassing, low water absorption, and radiation resistance. This paper describes the results of a processing study to develop a high-strength hoop-wound composite by the wet-filament winding method using Toray TI 000G carbon fiber and YLA RS- 14A cyanate ester resin as the constituent

Supporting Information for Graphene Oxide as Bifunctional and

Table of Contents 1. Experimental 2. Preparation and Characterization of Graphene oxide, Figure S1-S2 3. Experimental Procedure for Reactions 4. Analysis of the Products 5. Reusability Study of GO as a Bifunctional catalyst, Figure S3 6. Characterization of

In Situ IR Characterization of CO Interacting with Rh

The study of adsorbed CO 2 has been also carried out in order to characterize products of CO reaction at room temperature. IR spectroscopy data are discussed on the basis of X-ray diffraction and TEM characterization. 2. Experimental 2.1. Materials Preparation

Study of chromium(VI) adsorption onto modified activated

Read Study of chromium(VI) adsorption onto modified activated carbons with respect to analytical application, Adsorption on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

CaO: I, Fabrication and Characterization *, Journal of the

CaO: I, Fabrication and Characterization * CaO: I, Fabrication and Characterization * RICE, ROY W. 1969-08-01 00:00:00 ( 3 ) Firing Any initial firing or annealing of specimens was done approximately a s follows: the temperature was increased to 750 C in 10 h, then to 1205 C in 40 h, and held for 1 h.

Accessible area and hydrophobicity of activated carbons

Characterization The textural properties of the synthesized monoliths were analyzed using N 2 adsorption measurements at 77 K in a volumetric system (Quantachrome, Autosorb 3-B). Before the adsorption experiments, samples were submitted to an outgassing

(PDF) Development and characterization of a High

Furthermore, fluoropolymers and fluorocarbon elastomers show increased outgassing at elevated temperature which increases the instrumental background and deteriorates the limit of detection. Here, we report on the development and characterization of a High-Temperature Proton-Transfer-Reaction Mass Spectrometer (HT-PTR-MS) that can continuously be operated at temperatures up to 250 • C.

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