<tideeAbstracts><tideeAbs><RefNo>3061</RefNo><PublishYear>2005</PublishYear><Contributors>Sonibare OO, Ehinola OA, and Egashira R</Contributors><Affiliation>Chemistry Department Petroleum Geochemistry Research Group University of Ibadan Ibadan-200 005, Nigeria Hydrogen</Affiliation><Source><italic>Energy Conversion and Management</italic><bold>46</bold>(15–16): 2335–2344</Source><Title>Thermal and geochemical characterization of Lokpanta oil shales, Nigeria

TERI

TERI Information Digest on Energy and Environment

0972-6721

The Energy and Resources Institute

tidee-4-3-008

ABSTRACTS OF DISSERTATIONS OR ARTICLES

Oil shales and tar sands

92005

43304305

<tideeAbstracts><tideeAbs><RefNo>3061</RefNo><PublishYear>2005</PublishYear><Contributors>Sonibare OO, Ehinola OA, and Egashira R</Contributors><Affiliation>Chemistry Department Petroleum Geochemistry Research Group University of Ibadan Ibadan-200 005, Nigeria Hydrogen</Affiliation><Source><italic>Energy Conversion and Management</italic><bold>46</bold>(15–16): 2335–2344</Source><Title>Thermal and geochemical characterization of Lokpanta oil shales, NigeriaThe thermal decomposition of Lokpanta oil shale from Nigeria was studied by non-isothermal TG (thermogravimetry) and DTA (differential thermal analysis). The experiments were performed in an inert environment with a temperature range of 25°C to 600°C. The geochemical characteristics of the oil shale were also investigated by Rock Evaluation pyrolysis. Thermal breakdown of the kerogen content of the oil shale takes place mainly at the temperature range of 300°C to 570°C. The estimated decomposable kerogen content of the oil shale ranges from 4.55 to 9.64 wt%. The activation energies of the pyrolysis process vary from 73.2 to 75.0 kJ/mol. The DTA data reveals the exothermic nature of the decomposition process. The results from the geochemical analysis indicate that the oil shale contains sufficient, good quality kerogen to generate both oil and gas upon pyrolysis.