The analysis of key point in the production of hydrogen peroxide with Pd catalyst;

The latest progress of support modification, new supports(including macromolecular support and alumina support with nano-fiber shape), cocatalysts and new preparation technology of the catalysts in the research on the novel Pd catalysts for anthraquinone hydrogenation in recent years is reviewed.

Through the experiment and comparison of regenerating methods using steam,aromatic hydrocarbon and oxidizing solution for Pd catalyst used in the hydrogen peroxide production by anthraquinone process,recommends Pd catalyst regenerating method using oxidizing solution could being applied in the industrial hydrogen peroxide production.

Summary on palladium catalyst in hydrogen peroxide production by anthraquinone process;

Recent advances in palladium catalysts for aryl chlorides coupling reaction;

Rational operation of palladium catalyst in hydrogen peroxide manufacture;

95)+Al_2O_3 three way catalysts.

The necessity and possibility to replace noble metal catalyst in the technology of automotive exhaust purification,and the role of composite oxide of rare earth and perovskite in the three way catalyst were reviewed.

Owing to shortage of noble metals, increasingly stringent regulations and disadvantages of conventional design methods of three way catalysts, a novel design method using artificial neural networks for three way catalysts containing Cex Zr1-x O2 was put forward.

Three specifications of the three-way catalysts(TWC)were prepared using an excellent Ceria-Zirconia solid solutions as oxygen storage materials to match the three vehicles made in China reaching the Eu III standard.

4-x)Tb_(x)O_(2-y) of three-way catalysts(TWCs) were prepared by coprecipitation and sol-gel methods.

The three-way catalysts(TWCs) which were used widely in recent time are introduced;and the direction of development and problems to be solved in the future are also pointed out.