Effect of physicochemical microstructure on the thermal stability of ethylene-vinyl chloride copolymer

Kim, Chul‐Hwan; Kim, Dae-Chul; Park, Jung-Ki; Song, Hae-Young; Son, Won-Keun

doi:10.1016/0141-3910(94)90160-0

Cited by 1 publication

(4 citation statements)

References 16 publications

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“…The results will be presented at the ACS 1995 Anaheim Meeting, Divisionof Fuel Chemistry 6 ] . The effects of Fe vacancies on catalytic coal liquefaction will be further investigated.…”

Section: Resultsmentioning

confidence: 99%

“…The peaks a t 228.58 eV in figures (la) and (IC) have been assigned [5] t o the C-Mo and N-Mo bonding energies, whereas the ones at 232.2 eV t o the +VI oxidation state of molybdenum, consistent with the presence of MOO, [6]. Deconvolution of the data gives 90% of surface molybdenum in the form of oxides (mainly MOO,) for both Mo,N and M0,C.…”

Section: 'Binding Energymentioning

confidence: 99%

“…Previous XPS studies on a series of fresh binary ferrihydrite catalysts (M/FHYD), where secondary metallic-or non-metallic components were added to the particle surface t o inhibit particle agglomeration at high temperature, showed that a surface enrichment of both oxygen and secondary components occurred at the surface of the FHYD particles [6]. In these studies, selected area X-ray photoelectron spectroscopy (SAXPS) depth profile techniques were employed t o define the nature of the FHYD surface and any differences between the surface and bulk concentrations of the various elements.…”

Section: Related Catalyst Co-liquefaction Residuesmentioning

confidence: 99%

“…Project II.5 [6][7][8][9][10][11]1994) Gordon Research Conference on The Chemistry of Hydrocarbon Re sources.…”

Section: Task IImentioning

confidence: 99%

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Cooperative Research Program in coal liquefaction. Technical report, May 1, 1994--October 31, 1994

1994

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Coliquefaction of Coal with Waste Materials The liquefaction of a number of lignocellulosic wastes and the coprocessing of Wyodak coal with several lignocellulosic wastes was investigated using a CO/H,(COSTEAM) atmosphere(500 psig cold) in the presence of an alkali catalyst(Na,CO,). Oil and asphaltene yields were higher and gas yields higher for lignocellulosic wastes with higher lignin content. Oil and asphaltene yields from the coal were increased by 4 8 % by coprocessing. Although the gas yields were high(-70% from the wastes alqne and-30% from the coal and coal-waste mixtures, the gas was rich in hydrogen(typical1y-45%) which could be separated and used in the process. The COSTEAM process has also been applied to the liquefaction of a number of plastic resins. Greater than 90% conversion was achieved for PPE, PS, and low density PE. When these resins were coliquefied with Wyodak coal under the same conditions, the oil yield f i o m the coal decreased for coal-PE and coal-PS, but increased markedly(from 20% t o 62%) for coal-PPE. Coliquefaction experiments using the COSTEAM method were also performed on 1:l mixtures of PPE and a mixed plastic with newsprint. Oil yields increased somewhat(-5-10%) and, more importantly, the oxygen content of the oil product decreased significantly(from 9 to 4%). , A systematic study was carried out of the depolymerization-liquefaction reactions of high density polyethylene(PE) and isotatic polypropylene(PPE) as a h c t i o n of temperature, time and H, pressure. Three types of superacid catalysts were investigated in the study of PPE. For PE, using 2 wt.% of a Zr0$30, catalyst, 2 hrs. reaction time, and initial hydrogen pressure of 1500 psig, maximum liquid yield(87%) was obtained at 435 "Cy while maximum gasoline range yield(63%) was. 1. . .

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“…The results will be presented at the ACS 1995 Anaheim Meeting, Divisionof Fuel Chemistry 6 ] . The effects of Fe vacancies on catalytic coal liquefaction will be further investigated.…”

Section: Resultsmentioning

confidence: 99%

Section: 'Binding Energymentioning

confidence: 99%

Section: Related Catalyst Co-liquefaction Residuesmentioning

confidence: 99%

“…Project II.5 [6][7][8][9][10][11]1994) Gordon Research Conference on The Chemistry of Hydrocarbon Re sources.…”

Section: Task IImentioning

confidence: 99%

See 2 more Smart Citations

Cooperative Research Program in coal liquefaction. Technical report, May 1, 1994--October 31, 1994

1994

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Effect of physicochemical microstructure on the thermal stability of ethylene-vinyl chloride copolymer

Cited by 1 publication

References 16 publications

Cooperative Research Program in coal liquefaction. Technical report, May 1, 1994--October 31, 1994

Cooperative Research Program in coal liquefaction. Technical report, May 1, 1994--October 31, 1994

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