Inductively coupled plasma mass spectrometer (ICP-MS) has been used to determine the concentration of Li

V

Cr

Co

Ni

Cu

Zn

Sr

Mo

Cd

Sb

Ba

and Pb in oil shale samples and semi-cokes pyrolyzed at different final temperatures.The results show that Balikun oil shale contains more trace elements

especially Ba

Cd

Li

V and Sb

compared with Longkou oil shale which is only rich in Ba and Cd

and that most trace elements volatilize at around 500℃.In addition

the influence of trace elements on kerogen pyrolysis was studied.Thermogravimetric analyzer was used to investigate pyrolysis kinetics of kerogen with trace elements in different forms.The kinetic parameters (apparent activation energy E and frequency factor A) were calculated using overall n order reaction procedure.The relative content of alkane products was characterized by pyrolysis-gas chromatography/mass spectrometer (PY-GC/MS).The results indicate that Ni (NO3)2 can catalyse kerogen pyrolysis by increasing its conversion

rate and yields of light alkane products and decreasing yields of heavy alkane products.