The PX event in March 2007 in Xiamen arouses attention of people to the industrial production of PX. This paper introduces the MC process of liquid phase catalytic oxidation of hydrocarbons,which is relevant to the production of PX.

This paper introduces the studies of Gerhard Ertl,who is awarded the Nobel Prize in Chemistry 2007,in adsorption of hydrogen on metal surfaces,the mechanism of catalytic reaction in Haber-Bosch process for synthesis of ammonia,and the process of catalytic oxidation of CO.In addition,it analyzes the scientific and practical significance of the studies of Gerhard Ertl.

Vacion plating is a surface coating technology by which the matrix can be plated in vacuum condition.Its main producing processes do not involve water,so there are no problems of wastewater treatment in electroplating end,and green production can be realized.

When the surface of stainless steel is oxidized by chemical and electrochemical means and technology,there produces passivating film which can not only protect metals from corrosion but produce light interference.So the stainless steel is no longer single silvery white,but shows color such as red,orange,yellow,green,blue,indigo and purple etc.As a result,the application of stainless steel is expanded.

Views of chemical element is one of core views in middle school chemistry study.Construction of view of chemical element may help middle school students to form orderly understanding of matter and thinking methods of chemistry.The basic strategies of constructing view of chemical element ar(1)from the classification of matter based on element conceptions,(2)understand how the elements form mat- ters based on understanding of atomic structure,(3)form the basic model for investigation of the properties of elements based on the study of element periodic law,(4)construct view of chemical element in special topic study,(5)enrich view of chemical element in application of it,(6)construct view of chemical element using concept maps.