Tritium as a tracer in coal liquefaction. 1; Hydrogen mobility of tetralin under coal liquefaction conditions

Journal Article · Thu Aug 01 00:00:00 EDT 1991 · Industrial and Engineering Chemistry Research; (United States)

DOI:https://doi.org/10.1021/ie00056a011· OSTI ID:7249700

Kabe, T; Ishihara, A; Daita, Y ^[1]

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1. Dept. of Chemical Engineering, Tokyo Univ. of Agriculture and Technology, Koganei, Nakamachi, Tokyo 184 (JP)

In this paper the reaction of tetralin with tritiated molecular hydrogen is carried out at 350-440{degrees} C, 20-60 kg/cm{sup 2} for 0-8 h to estimate the hydrogen mobility of tetralin itself. Under these conditions, tetralin is converted to 1-methylindan, naphthalene and n-butylbenzene, and 1-methylindan is a main product. With a rise in temperature and a passage of time, the amount of tritium transferred from the gas phase into tetralin increased and the hydrogen-exchange ratio of tetralin at 440{degrees} C, 120 min and 400{degrees}C, 480 min reached 14.3% and 13.5%, respectively. The hydrogen-exchange ratio and the amount of methylindan increased with a hydrogen/tetralin molar ratio. The addition of coal enhanced the hydrogen exchange between gas phase and tetralin. In the absence and presence of coal, tritium was observed in the isolated naphthalene. It is suggested that hydrogen in tetralin changing to naphthalene may be able to exchange with molecular hydrogen.

• OSTI ID: 7249700
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Vol. 30:8; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
74 ATOMIC AND MOLECULAR PHYSICS
COAL LIQUEFACTION
CHEMICAL REACTION KINETICS
HYDROGEN
DIFFUSION
ATOM TRANSPORT
NAPHTHALENE
TETRALIN
TRACER TECHNIQUES
TRITIUM COMPOUNDS
AROMATICS
CONDENSED AROMATICS
ELEMENTS
HYDROAROMATICS
HYDROCARBONS
HYDROGEN COMPOUNDS
ISOTOPE APPLICATIONS
KINETICS
LIQUEFACTION
NEUTRAL-PARTICLE TRANSPORT
NONMETALS
ORGANIC COMPOUNDS
RADIATION TRANSPORT
REACTION KINETICS
THERMOCHEMICAL PROCESSES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
400201 - Chemical & Physicochemical Properties
664400 - Experimentally Derived Information on Atomic & Molecular Properties- (1992-)