Spillover and migration of surface species on catalysts : proceedings of the 4th International Conference on Spillover, Dalian, China, September 15-18, 1997

These papers are taken from the 4th Spillover Conference, and exhibit advances and results in spillover studies since 1993. The five invited lectures, 23 oral and 28 poster presentations explore active research areas, highlight the role played by spillover in controlling the dynamic state of catalysts when it occurs in the catalytic process, study the surface mobility of oxygen and hydrogen using isotopic exchange method and the acidic functions of spilt-over hydrogen in a number of acid catalyzed reactions are also clarified. Electrochemically controlled spillover phenomenon is also explored, along with reports on the spontaneous dispersion of compounds onto supports and its importance in catalysis, concluding that migration is quite a common process. The conference papers present a number of aspects of spillover studies, such as spillover phenomena, methods for spillover characterization, spillover effects in catalysis. Studies in migration and and mobility of surface species are also included in the conference topics, as it is believed that the migration of species is a more general phenomenon and spillover can be considered as a special case of migration. The spillover of hydrogen and oxygen is one of the major issues at the conference, while the spillover of larger molecules are also reported in some papers.