This is the first of a sequence of three articles, which describes the effect of diffusion limitations on rate and on selectivity in heterogeneous consecutive reactions. In particular the effect on selectivity, which the literature mentions in connection with solid catalysis only, has been the subje
Consecutive reactions in heterogeneous systems II—Influence of order of reaction rates on selectivity
✍ Scribed by J.G. van de Vusse
- Publisher
- Elsevier Science
- Year
- 1966
- Tongue
- English
- Weight
- 502 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0009-2509
No coin nor oath required. For personal study only.
✦ Synopsis
In this second article on consecutive reactions in heterogeneous systems the effect of diffusion limitation on yield and selectivity is discussed for various orders of the reaction rates. A family of reactions including all combinations of zero-, first-and second-order reaction rates has been studied and optimum yields have been calculated both with and without diffusion limitations.
📜 SIMILAR VOLUMES
A model of oxygen absorption in microbiological systems of zero order reaction rate is proposed. The partial differential equation was solved to predict the profile of the oxygen concentration boundary layer next to a gas-liquid interface. Generally speaking, the presence of microbial cells always h
Using the mndom patch model, kinetic expressions arc derived for the pressure dependence of first-and second-order surface reactions\_ Collisions beteen gas-phase and adsorbed molecules which affect the desorption probability are taken into account. For firstand second-order reactions a representati
Periodic operation of a catalyst pellet can produce greater selectivity than steady-state operation even when diffusional mass transfer resistance is very large. For the example discussed here improved selectivity is obtained at a switching frequency which is small enough to provide adequate penetra
A study was made of the hydrolytic behavior of riboflavin in aqueous solutions buffered with a borate buffer system. It was observed that the vitamin decomposed slower in the presence of the b d e r e d rather than unbuffered solutions of equivalent hydroxide-ion concentration. Rate studies suggeste