An overview on the development of the coupling of separation and reaction processes is briefly introduced.

Several respects of inorganic membranes have been reviewed，including the preparation of membranes, applications and membrane catalytic reactions. Some discussions also have been made for the subject on recent developments of inorganic membranes.

This article introduced the state of the arts of electronic chemical materials，and pointed out the way of developing the domestic materials till the year 2000.

Large-scale cultivation of animal and plant cells, which is closely related to the production of biological medicine, constitutes a great part of recent development in biological techniques. The biochemical engigeering aspects of cultivation of animal and plant cells ,are discussed in detail,such as culture conditions,bioreactors,immobilization methods,simulation of basic reactions.biological surfaces and interfaccs,liquid-solid transport processes,vibrated fluidization,separation of products,mathematical models and scaling-up design,and automatic control,analyses and optimization of systems and so on. Some proposals are put forward about the development of animal and plant cells.

The oil reservoir chemical engineering has been developed in the cross fields of the related disciplines of oil reservoir engineering and chemistry based on the tertiary oil recovery. It is a discipline of the study of the transport phenomenon and chemical reactions happened in the oil reservoir environment，the principles and regulations affecting the dynamics of the oil reservoir. The applications of a series of new methods，thoughts and theories of chemical engineering will play an important driving role in the formation of oil reservoir chemical engineering. Meanwhile，the develompent of chemical engineering，combined with the unique natural resources and the social economics in China will promote oil reservoir chemical engineering more and more. The complicated environment and the rich content of the discipline of oil reservoir chemical engineering provide a wide range to the development of the frontiers of chemical engineering. Some relative works still need to be strengthened in China are proposed.

Natural gas will be the world's dominant energy sources for the 21st century. As an alternate resource to crude oil,the conversion of natural gas into liquid fuels and key chemicals appeared to be a hot topic for research. This paper describes a variety of new processes of natural gas conversion (director via syngas)being developed since 1980's.

The characteristic of energy resources in China is less in oil and more in coal. The demand of high quality liquid fuels is ever increasing in China with its economic development. It is expected that the relation between supply and demand will become a serious problem in the future. By use of a new process of coal topping,which combines quick pyrolysis-quenching with a circulating fluidized bed combustor，a higher oil recovery can be obtained for young coal , and coal clean combastion will be realized. Developing a new type of pyrolysis reactor is a key step for industrialization of the new process.

Some chemical engineering problems in hydrometallurgical industry of rare earths in China are briefly introduced in this paper. Possible ways to solve these problems are concretely analysed and some basic and applied studies about innovating existing production processes of rare earths are also given.

China is one of the most rich country in salt lake resources and the recoverable reserves of potassium，sodium，lithium and magnesium are very huge. As the development of national economy，especially agriculture，we should make large efforts in developing the industry of potassium fertilizer，utilize comprehensively the various valuble elements and further speed up the exploitation of salt lake resources. This paper briefly reviews the characteristics，exploiting situation and several ongoing chemical techniques in utilizing comprehensively salt lake resources，including the production of potassium chloride by cold crystalization，production of potassium sulfate from salt lake resources, separation and extraction of lithium from brine，dehydration and pyrolysis of bischofite，deep processing and value-added increasement of salt lake resources.

The important role of solvent extraction in industries is reviewed. The challenge and opportunity faced by solvent extraction are discussed and then the recent advances on research works are reported. It is shown from the practice, that the basic research achievements could generate great benefits for economy and society.

This paper deals with the state-of-the-art development of the fixed-bed reactor and discusses the possible progress to be made in the future. As a traditional reactor，the fixed-bed can be seen quite satisfactory as far as its model theory itself is concerned. However，it is almost impossible to optimize the reactor based on the models since obvious uncertainty is involved in the model structure and model parameters. Therefore, from scientific methodology point of view , the dynamic optimization，relied on state and parameter estimation, is discussed. A possible tendency is to update fixed-bed reactors by taking advantage of some related technologies，such as inorganic membrane and catalyst design，in order to realize reaction-separation combination. Finally，this paper emphasizes the importance of combining the existing theories and principles，to make the fixed-bed reactor with tow energy consumption and high yield

This paper proposes that behavior nonlinearity should be the focus of future re-search of particle-fluid systems, which includes the intrinsic aspect resulting from particle-fluid interaction and the secondary aspect related to external factors and non-}deality of material properties. The intrinsic nonlinearity leads to bifurcation, chaos and self-organization, which is complicated further by the secondary nonlinearity. The concept of multiple resolution is proposed for analyzing such a complicated system，that is, the superficial motion into extremum and dynamic aspects，the total energy consumption into reversible and dissipative components,the whole process into ordered and disordered branches，and the global structure into different scales. Computer graphic simulation based on the assumption of two discrete media with different dimensions is also proposed to study nonlinear behaviors in the system.

Molecular engineering studies the design and development of the products and the processes at molecular level. It is an active frontier in the field of chemical engineering. Its important foundation is the quantitative relations between molecular structure and thermody-namic properties, transport properties and reaction kinetics. To study those relations is the task of molecular thermodynamics, molecular transport phenomena and molecular reaction kinetics respectively. This paper discusses some of their progress.