Pyrolysis of tetralin

Benjamin, Ben M.; Hagaman, Edward W.; Raaen, Vernon F.; Collins, Clair J.

doi:10.1016/0016-2361(79)90158-3

Cited by 60 publications

(26 citation statements)

References 6 publications

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“…This is high relative to the tet-ralin concentrations of our experiments, so that the outcome of Hooper's experiment is not surprising in light of our results. Benjamin and coworkers [6] also heated tetralin in closed tubes. With a tetralin density of 6.0 g-mol/L they found only naphthalene and 1-methylindan as sole primary products at 400-500°C.…”

Section: @-Ring Opening Mechanism For Hydrocracking and Ring Isomerizmentioning

confidence: 96%

New aspects of the mechanism for the thermal hydrocracking of indan and tetralin

Penninger

1982

Int J of Chemical Kinetics

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Thermal cracking of indan and tetralin in the gas phase was carried out in a flow reactor at 500°C and 8 MPa pressure in the presence of hydrogen and nitrogen. The primary reactions are ring cracking and dehydrogenation, regardless of the nature of the second component. Ring cracking, however, is strongly enhanced by the presence of hydrogen. This enhancement becomes less significant with increasing concentration of the hydrocarbon in the gaseous reaction mixture and also with a decreasing ratio of hydrogen to hydrocarbon. At hydrocarbon concentrations larger than approximately 0.5 g.mol/L and Hz-to-HC molar ratios of 1 or lower, conversion rates are almost equal in hydrogen and in nitrogen. Ring cracking exhibits different kinetic behavior in nitrogen than in excess of hydrogen. This illustrates the occurrence of two complementary cracking mechanisms, each of which can dominate in certain concentration ranges. The Hz-initiated ring cracking is gradually transformed into a hydrogen-donor mechanism as the leading reaction scheme when the concentration of indan or tetralin is increased.

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Section: @-Ring Opening Mechanism For Hydrocracking and Ring Isomerizmentioning

confidence: 96%

New aspects of the mechanism for the thermal hydrocracking of indan and tetralin

Penninger

1982

Int J of Chemical Kinetics

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“…17 However, the effect of indene is difficult to compare with that of tetralin because it has a lower hydrogen content and smaller amounts of it were required in blending fuel 14 as compared with the amount of tetralin used in fuel 13. Indan would have been a better choice to compare with tetralin, but its cost and availability were prohibitive.…”

Section: Molecular Structurementioning

confidence: 99%

“…This appears to be the reason why tetralin has a higher sooting tendency than other single ring aromatics. 17 Fuel 14 blended by adding indene to Jet A-l was only tested at a few operating conditions because of the scarcity and high cost of indene. The tests showed that fuel 14 containing indene produced less soot than fuels 11 and 13 containing polycyclic aromatics, but formed slightly more soot than fuel 8 containing monocyclic aromatics.…”

Section: Indenementioning

confidence: 99%

Sooting Tendency of Fuels Containing Polycyclic Aromatics in a Research Combustor

1983

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Several jet fuel blends containing alkyl benzenes, methyl naphthalenes, tetralin, and indene were prepared with hydrogen contents ranging from 11.5 to 14.2%. The effects of burner inlet conditions on the sooting tendency of the test fuels were measured in a Phillips 5.08-cm (2-in.) diameter cylindrical combustor at inlet pressures and temperatures up to 1620 kPa (16 atm) and 1100 K, respectively. Both flame radiation and opacity measurements were used to determine the soot formed in the primary zone of the burner. Combustion efficiency and fuel/air ratio were determined from gaseous emissions. The sensitivity of the sooting tendency to the H/C ratio was determined from the correlation of flame radiation intensity with the H/C ratio. This sensitivity varied significantly with operating parameters such as burner inlet temperature and reference velocity. The effects of polycyclic aromatics were determined by comparing the sensitivity to the H/C ratio of fuels blended by adding methyl naphthalenes and tetralin with that of fuels blended by adding alkyl benzenes. The increased sooting tendency of those fuels containing polycyclic aromatics was most affected by the fuel/air ratio and reference velocity. NomenclatureF/A = fuel/air weight ratio H/C = hydrogen/carbon atom ratio R = flame radiation intensity, kW/m 2 S = normalized sensitivity of sooting tendency to the H/C ratio 57V = smoke number T = burner inlet temperature, K V = reference velocity, m/s p = gas density, kg/m 3

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“…The yield of naphthalene (N) resulted from hydrogen donation of tetralin to oil shale was calculated based on the equal quantity of OM and tetralin in the experiments. Neglecting the minor quantity of by-products in the hydrogen-donating reaction [8,14,17], and taking the initial content of tetralin as 100%, the sum of tetralin remained (T) and naphthalene formed should be…”

Section: Methodsmentioning

confidence: 99%

Catalytic Thermal Liquefaction of Oil Shale in Tetralin

Johannes

Tiikma

Luik

et al. 2012

ISRN Chemical Engineering

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A short review on the publications concerning thermal liquefaction of solid fuels in the environment of hydrogen donor solvents and catalysts is compiled. New experimental results on the catalytic thermal dissolution of oil shale in tetralin as the hydrogen donor solvent in a batch autoclave are presented. The impacts of pyrolysis temperature, duration, and catalyst type on the yields of gas, maltenes, asphaltenes, preasphaltenes, and coke in the presence of tetralin are described.

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Pyrolysis of tetralin

Cited by 60 publications

References 6 publications

New aspects of the mechanism for the thermal hydrocracking of indan and tetralin

New aspects of the mechanism for the thermal hydrocracking of indan and tetralin

Sooting Tendency of Fuels Containing Polycyclic Aromatics in a Research Combustor

Catalytic Thermal Liquefaction of Oil Shale in Tetralin

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