COLL 29 |
| Mayfair C. Kung1, Harold H. Kung2, Zhixiang Chang2, Alexandr Kozlov2, and Wenmei Xue2. (1) Northwestern University, Evanston, IL 60208, (2) Department of Chemical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3120 |
| Aluminum chloride and aluminum alkoxides exist as dimeric or oligomeric units. Their conversion to a solid catalyst by hydrolysis is difficult to control. On the other hand, aminoaluminum complexes can be prepared as stable monomeric units, and its reactions can be much more easily controlled. Controlled hydrolysis of aminoalkoxyaluminum led to the formation of an aluminum oxide that has a very high surface density of Lewis acid site compared with surface hydroxyl groups. These sites are catalytically active for Lewis acid-catalyzed reactions, such as aminolysis of epoxide. Other aminoaluminum complexes can be used to synthesize aluminosiloxane that offers an environment similar to an aluminum cation in zeolite. |
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The Science and Engineering of Catalyst Preparation
8:30 AM-11:55 AM, Sunday, March 28, 2004 Marriott -- Orange County 3, Oral
Division of Colloid and Surface Chemistry |