Electrical double-layer effects on the deposition of zeolite A on surfaces |
| |
Authors: | Oonkhanond Bovornlak Mullins Michael E |
| |
Affiliation: | Chemical Engineering Department, Mahidol University, 25/25 Buddhamonthon 4 Rd., Nakornprathom 73170, Thailand. |
| |
Abstract: | Zeolite particles formed from an aluminosilicate solution possess a negative surface charge due to the substitution of aluminum atoms into a SiO4 tetrahedral structure making it difficult to form a continuous layer in solution. The particle interactions with surfaces and each other can be studied using the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory. The interaction energy between zeolite-zeolite and zeolite-substrate on various materials can be estimated in this fashion. The zeolite LTA particles show a stronger repulsion interaction on all substrates and on the each other as compared to the ZSM-5 particles. This repulsive energy also increases as the particles size increases. This results in the formation of conglomerate in the solution rather than forming an adhered layer on the substrate. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|