characterisation of coal tar pitches by thermal analysis

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US5726118A
An activated carbon composition of matter is disclosed comprising a mixture of: (a) a first activated carbon having a plurality of pore sizes pore volumes and pore surface areas sufficient to selectively adsorb fluids having molecular diameters from about 4 Angstroms to about 4 000 Angstroms and (b) a second activated carbon having a plurality of pore sizes pore volumes
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ASTM International
Withdrawn Standards ANSIZ41-99 American National Standard for Personal Protection - Protective Footwear D21-40 Method of Sampling Coal for Analysis (Withdrawn 1947) D22-26 Methods of Laboratory Sampling and Analysis of Coal and Coke (Withdrawn 1927) D42- Specification for Coal-Tar Pitch for Roofing Damp-Proofing and Waterproofing
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EFFECT OF PORE SIZE OF ACTIVATED CARBON FIBERS ON THE
effect of pore size of activated carbon fibers on the adsorption of nox (english) characterisation of porous carbons by thermal response measurement leistner m / grahlert w / kaskel s quantitative analysis of coal tar-based pitch by solid-state ^1^3c-nmr an j c /
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Production of Mesophase Pitch from Coal Tar and Petroleum
performance carbon bre Both coal tar and petroleum pitches contain high molecular weight carbonaceous materials and are residues from coal tar and crude oil distillation respectively Petroleum pitch is preferable to coal tar pitch as a starting material as it has a lower proportion of undesirable lighter components
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Effect of Different Catalysts on Properties of Coal Tar
Cinnamaldehyde- (CMA-) modified coal tar pitches (CTPs) are prepared in the presence of acids In this paper the effect of boric acid and p -toluene sulfonic acid on the pyrolysis and graphitization process of CMA-modified CTP was studied The pyrolysis process was studied by Fourier transform infrared spectroscopy thermogravimetric analysis and derivative
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Rheological Behaviour and Characterisation of Pitch
In this study two pitches a coal-tar pitch (MP110) and a () Lurgi-gasi er pitch are pyrolised to produce material at di erent stages of mesophase development These pitches produce mesophase of di erent mosaic type and therefore also resultant coke
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Modification of coal tar pitch with P
ABSTRACTCoal tar pitch (CTP) was modified with p-phthalaldehyde as a cross-linking agent p-toluenesulfonic acid as a catalyst and cyclohexane as solvent to reduce the toxic PAH content The optimum reaction conditions were obtained as follows: 8% of p-phthalaldehyde 5% of p-toluenesulfonic acid reaction temperature 60C and reaction time 4 h
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US20180282166A1
A precursor having at least five percent of lignin based coke and d002 spacing of more than 3 36 angstroms and less 3 44 for making graphite Methods for making a green/graphite article include mixing coke derived from a petroleum product a coal product or a bitumen product with coke derived from lignin Alternatively the precursor material for the various types of coke may be
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Investigation of solvent extraction with GC/MS and residue
May 24 2014A high-temperature coal tar (HTCT) was sequentially extracted with petroleum ether (PE) ethyl acetate (EA) and acetone with ultrasonic irradiation to afford extracts 1 to 3 (E1 to E3) respectively and acetone residue The gas chromatography/mass spectrometry (GC/MS) analysis of all extracts show that E1 is mainly composed of di- and tricyclic arenes such as
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Colin Snape
After moving to the University of Strathclyde in 1987 an extensive research programme in fuel science encompassing my long-standing interests in coal characterisation organic geochemistry and conversion together with newer interests in cracking and hydroprocessing catalysis petroleum residues oil shale and biomass pyrolysis sulfur
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Effect of Temperature on the Molecular Weight Distribution
Coal pyrolysis gas from different ranks of coal was monitored on real time basis using photoionization mass spectroscopy The molecular weight distribution of different products as a function of temperature from various coal ranks studied was observed It
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Analysis of the carbonization and__ formation of coal tar
The analysis of both coal tar pitch and mesophase pitch obtained from coal tar pitch according to the technology described in Ref [2] and performed with the use of classical methods (Kissinger's law temperature criterion and ?rst-order thermokinetics) shows that there is an isokinetic effect which makes identi?cation of the observed
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IET Digital Library: Micro Nano Letters
Dec 12 2014Micro Nano Letters — Recommend this title to your library Thank you The fabrication and characterisation of an integrated microfluidic chip for phosphate detection are described A micro three-electrode-system embedded in a microfluidic channel was used for the analysis of samples Coal tar pitches (CTPs) are used as a
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Preparation and evaluation of isotropic and mesophase
Preparation and evaluation of isotropic and mesophase pitch-based carbon fibers using the pelletizing and continuous spinning process Show all authors Linares-Solano A Preparation of general purpose carbon fibers from coal tar pitches with low softening point Carbon 1997 35:
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The Evaluation of Thermoplastic Precursors for C/C
C/C-SiC composites fabricated by the Liquid Silicon Infiltration process (LSI) typically use phenolic resin-based thermosets as carbon precursors In contrast to this two different thermoplastics (Polyetheretherketone PEEK and Polyetherimide PEI) were examined for their suitability as carbon precursors for C/C-SiC composites The carbon fiber surfaces were
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Author Index
Kinetics of mesophase formation from coal tar pitch and coal tar pitch-graphite/metal chloride mixture : 1998: Differential thermal analysis and x-ray study of 1 2-dipalmitoyl-sn-glycero-3-phosphocholine phases with less than 5% water: Characterisation of mesocarbon microbeads (MCMB) as active electrode material in lithium and sodium cells:
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Characterization of Molecular Mass Ranges of Two Coal Tar
Aug 20 2008Characterisation and feasibility as carbon fibre precursors of isotropic pitches derived from anthracene oil Fuel 2012 101 9-15 DOI: 10 1016/j fuel 2011 10 005 Jianshi Zhou Quanling Ma Zhimin Zong Xianyong Wei Separation of acearylenes from high-temperature coal tar
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Hydrogen storage in carbon materials—A review
Kunowsky et al 149 tested two types of chemically activated (using KOH) coal tar pitch‐based carbon fiber materials for hydrogen storage at 77 and 298 K The gravimetric hydrogen storage capacity is found to be 1 1 wt% at room temperature and 200 bar pressure
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Low
Coal-tar pitch which is a by-product of the coke oven is frequently used as a binder and impregnator in the manufacture of electrodes in the aluminium and steel industries Coal-tar pitch can be also used as a matrix precursor for carbon/carbon composite due to high carbon yield
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Prof John R Bunt
View Prof John R Bunt's profile on LinkedIn the world's largest professional community Prof The catalytic effect of Benfield waste salt on the CO2 gasification propensity of a typical South African Highveld coal Journal of Thermal Analysis and Calorimetry South African coal tar pitches in order to produce mechanically strong and
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Chapter 10
Chapter 10 - Respiratory System STRUCTURE AND FUNCTION Morton Lippmann The respiratory system extends from the breathing zone just outside of the nose and mouth through the conductive airways in the head and thorax to the alveoli where respiratory gas exchange takes place between the alveoli and the capillary blood flowing around them
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Pitch petroleum arom
BACKGROUND INFORMATION Note: Because of the high structural similarity between coal-tar pitch and related pitch materials (e g petro pitch) the DMEL values derived for benzo[a]pyrene as marker in complex PAH mixtures are also adopted for petro pitch and related complex substances The main hazardous effects of pitches on human health are related to the
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Insight into aromatic structures of a middle
Insight into aromatic structures of a middle-temperature coal tar pitch by direct characterization and ruthenium ion-catalyzed oxidation D Cazorla-Amors A Linares-SolanoCharacterisation of coal tar pitches by thermal analysis R Santamara C Blanco R Menndez et al Preparation of low toxicity pitches by thermal oxidative
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Structure and thermal properties of tar from gasification
This study was carried out to elucidate chemical composition and thermal decomposition behavior of bio-tar from the gasification of agricultural crop residue facilitating its further processing and utilization Structural characterization by gas chromatography mass spectroscopy (GC–MS) Fourier transform infrared spectroscopy and elemental analysis indicated that the bio-tar
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Mustafa Zafer Ozel
Mustafa Zafer Ozel serves as the editorial board member in Characterisation of Eucalyptus camaldulensis volatiles using direct thermal desorption coupled with two-dimensional gas chromatography-time-of-flight mass spectrometry Production of Mesophase Pitch from Coal Tar and Petroleum Pitches using SFE Turkish Journal of Chemistry 26
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Polish coal tar resource base for the production of coal
Polish coal tar resource base for the production Advanced method of physicochemical characterisation of pitches 5 Summary and conclusions material but also on the temperature conditions during thermal treatments High temperature coal tars are generated by coking of coal in temperature
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