CHEMICAL WAVES AND STATIONARY PATTERNS

摘要: When phenanthroline is added to the Belousov–Zhabotinskii (B–Z) system, in a test tube, traveling red and blue bands are observed displaying spatio-temporal oscillations. This feature denotes specific type of time order space order. In export entropy through diffusion occurs dissipative structure obtained. Both waves stationary structures formed depending on experimental conditions. chapter discusses studies, mechanisms mathematical modeling such structures. It also turning patterns, mosaic structure, precipitation their mechanism detail. Essentially non-linear kinetics involving reaction–diffusion basis modeling. During one-dimensional study uncatalyzed oscillatory reaction systems, types called phenol–bromate–H 2 SO 4 ferroin–bromate–H systems. Analytical studies showed that latter case simply an agglomeration fine grains solid solutions products, tri-bromophenol p-benzoquinone during periodic nucleation. Mosaic were not tube which had been freshly cleaned by steaming, indicating occurrence heterogeneous Interdiffusion one electrolyte into another reacting may lead rhythmic deposition precipitate, known commonly as Liesegang phenomenon. ring-type patterns both living non-living systems including bacterial fungal growth. solution large concentration K Cr O 7 allowed diffuse less concentrated nitrate containing lyophilic gel medium, precipitate appears after several hours.