This dissertation focuses on studies of aluminum oxide matrices that were produced through rapid calcination of aluminum hydroxide, followed by rehydration, without almost any chemical byproducts. Rehydration with several different metal compounds results in products with clearly changed characteristics. In order to obtain a broad overview of possible changes in the matrix, water-soluble compounds of titanium, chromium, molybdenum, tungsten, cerium and yttrium were used as initiators, and, in addition, nickel was used as an activator. It can be shown that the structural and catalytic characteristics of the catalytic Ni-Al2O3 system can be modified in many different ways through specific modifications of the metal catalyst as well as by the use of different preparation methods. |