A series of dual-cation organobentonites are synthesized by replacing the metal ions in bentonite with both long-chain alkyl or aryl quaternary ammonium cations,such as dodecyltrimethylammonium(DTMA),tetradecyltrimethylammonium(TPA),cetyltrimethylammonium(CTMA),octadecyltrimethylammonium(OTMA),and short-chain alkyl or aryl quaternary ammonium cations,such as tetramethylammonium(TMA).

Four chlorides of pyridine-based dicationic ionic compounds were synthesized by N-alkylation of pyridine with dihalogenated hydrocarbons,and then by exchange of the anion with silver nitrate,the corresponding four nitrates of the ionic compounds were obtained.

Diagenesis of reservoir of the Shuangyang Formation of Paleogene in Moliqing Faulted Depression of Yitong Basin, Jilin Province;

Analysis of the Characteristics of Porosity Texture and Influence Factors of the Shuangyang Formation Reservoir in Moliqing Fault Depression;

Sedimentary features of submarine fan in Shuangyang Formation, Moliqing faulted depression, Yitong Basin;

Coal-Accumulation Regulation in Shuangyang Basin and Prediction of Promising Area for Coal Looking;

Based on the measuring results of istope age of Xiaofengmidingzi Formation in Shuangyang Basin and its plant fossile,the geological Xage of the formation is in later period of Middel Jurassic and can compare with Xiajiajie Formation.

The author confirms that adding 51% of Shuangyang coal is the up limit, besides giving the process parameters and the control range.

In application of the large power in duced polarization for ore-search in the Shuangyang coalfield.