Catalytic activity of alkaline-earth Y zeolites and concentration of bare metal ions located in the site II of faujasite structure |
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| Authors: | Yoshinori Kanno Hisao Imai |
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| Affiliation: | 1. Government Industrial Research Institute, Nagoya 1, Hirate-cho, Kita-ku, Nagoya 462, Japan;7. Research Laboratory of Engineering Materials, Tokyo Institute of Technology, Nagatsuta-cho, Midori-ku, Yokohama 227, Japan |
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| Abstract: | The concentration of the bare metal ions located in the Site II of the alkaline-earth Y zeolites was determined from the CO adsorption, and the concentration sequence was obtained as follows: SrY>CaY>MgY>BeY. This sequence corresponded well to the radius of exchanged cation. Catalytic activity of alkaline-earth Y zeolites for the disproportionation reaction of NO, further, was discussed, and activity order of per unit amount of bare Site II cation was determined as follows: BeY>MgY>CaY>SrY>BaY. This order corresponded well to the strength of the electrostatic field of alkaline-earth Y zeolites. |
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