Tetralin


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Tetralin

 

(or 1,2,3,4-tetrahydronaphthalene), a colorless liquid with an odor similar to that of naphthalene. Tetralin has a boiling point of 207.6°C and density of 0.970 g/cm3 at 20°C. It is insoluble in water but soluble in most organic solvents.

Tetralin is contained in the diesel fractions of petroleum and in coal oil. Produced industrially by the catalytic hydrogenation of naphthalene, it is used as an ingredient in degreasing substances, as a solvent in the paint and varnish industry, as a motor fuel additive, and as the raw material in the synthesis of certain dye intermediates.

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It was reported that up to 90% of OM was transformed into decomposition products by dissolution conversion when 2 g/g of tetralin was added as a hydrogen donor solvent at a temperature of 315[degrees]C.
The commonly used hydrogen donors in heavy oil upgrading are hydrogen gas, methane, tetralin (or tetrahydronaphthalene, [C.
Sakamoto et al have produced uniform high-strength PE fibers by gel-spinning 20 to 30 wt% UHMWPE gels in volatile solvents such as decalin or tetralin into water and drawing the fibers at least 15 times their original lengths.
The colloid system that she and her team studies is composed of polymethylmethacrylate (PMMA) particles, which are sterically stabilized and suspended in a decalin and tetralin solvent mixture, then balanced with a bigger polymer, polystyrene (PS), that causes attraction through a depletion interaction.
A mixture of solvents, such as methanol or tetralin (commonly with dichloromethane), may be used to control evaporation or broaden the range of coatings that a stripper could attack.
The study focused on three compounds, THQ, t-decalin and tetralin, that help neutralize highly reactive "free radicals" formed at temperatures above 300 degrees Celsius.
The solubility limit kinetic model was proposed (2002) to study thermal cracking of asphaltenes in maltene, 1-methyl naphthalene and tetralin.
Even liquids obtained in BM reductive liquefaction (BM liquefaction and hydrogenation in one stage) using tetralin and other H-donor solvents can often contain excessive oxygen, which has to be removed.
PP was reprecipitated from 5%w/w solution of tetralin to methanol several times, followed by soxhlet extracting with n-heptane for 8 h under nitrogen atmosphere to remove the additives.
In the process, plastics--either alone or mixed with coal--are combined with tetralin (a hydrogen feedstock) and a zeolite-based catalyst in a reactor.
The researchers mixed various types of plastic with zeolite catalysts, including HZSM-5 and tetralin, in a sand bath, then placed the slurry in a "tubing-bomb" reactor.