COLL 180 |
| Bernard Delmon, Unité: Catalyse et Chimie des Matériaux divisés, Unité: Catalyse et Chimie des Matériaux divisés, Univ. catholique de Louvain, Belgium, Place Croix du Sud 2/17, 1348 Louvain-la-Neuve, Belgium |
| Different reasons stimulate advances in catalyst preparation. These are, among others: 1/ Making heterogeneous catalysts possessing more of the remarkable properties of homogeneous ones. Tethering (or anchoring) is just a way to immobilize homogeneous catalysts, without modifying much their properties. This is not sufficient. Both organic structures and atoms belonging to the solid should be involved to take full advantage of both. 2/ New approaches are needed to achieve chemical homogeneity at the atomic level in solids containing different catalytically active elements (e.g. silica-alumina, pore walls of mesoporous solids). 3/ Heteropolyacids (HPA) need supports. Can we adapt the preparation of supported liquid catalysts to HPA's? How? 4/ New types of reactors are very promising: reverse-flow, ultra-fast reactors, micro-reactors. The preparation of suitable catalysts not only needs new chemical formulations and textures, but also preparation processes adapted to the corresponding shaping techniques. A few examples will illustrate the discussion, taking, when possible, suggestions from other fields of science. |
|
The Science and Engineering of Catalyst Preparation
2:00 PM-5:25 PM, Monday, March 29, 2004 Marriott -- Orange County 3, Oral
Division of Colloid and Surface Chemistry |