| 简介 |
A process for preparing a dispersed noble metal containing catalyst comprises : contacting a pre-treated acidic porous material with at least one metal ion complexed with a ligand in a solvent having a dielectric constant in a range of 24-42 to obtain a metal ion exchanged acidic porous material; calcining the ion exchanged material at 300-600 oC; incorporating the calcined mixture with a noble metal; drying the noble metal loaded acid porous material; extruding 50-90 % w/w of the dried material with 5-50 %w/w of a binder material; and calcining the extruded material at 250-400 oC under constant air flow. The acidic porous material may be a zeolite, molecular sieve, amorphous silica-alumina, solid acids and mixtures thereof. The metal ion may be selected from the group consisting of Group IIA metals, rare earth metals and mixtures thereof. The ligand may be an organic ligand , preferably a supramolecule able to form stable metallo-macrocycles. A catalyst formed by the process is also disclosed. |
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