Preparation of Catalysts by Ion Soft Landing
Researchers at Purdue University have developed a new methodology for preparing catalytic surfaces through molecular soft landing of mass selected ions. The principal advantage of this method is that mass spectrometry allows almost any imaginable combination of atoms in a particular geometrical arrangement to be generated and ion soft landing allows this molecular entity or combination of entities to be selected and then gently deposited onto a surface while remaining intact. Using electrospray ionization, delicate molecular structures or mixtures of structures can be generated and mass selected. Using an ion trap, mass selection of ions can be done prior to landing. The result is a well-controlled selection of the desired catalyst particle size and molecular composition; therefore, catalytic surfaces of known composition can be prepared.
Can define chemical composition of catalytic surfaceControl of catalyst particle size and molecular composition Optimal cluster size and composition
Chemical analysis
R. Graham CooksPurdue ChemistryAston Labs
United States
7,910,377
美国
