A more efflcleint and tlme-savlng synthetic route to sllicalmmoblllzed 8-quinolinol has been developed that results In a product exhibltlng a relatively large exchange capacity. A comparison of dlfferent sllica supports has been performed and the resulting slllca-bound 8-qulnolinol materlals have been characterized with regard to exchange capaclty, carbon content, acid-base properties, and stablllty. The dependence of capaclty on surface area and pore size Is dlscussed and a comparison i o conventionally prepared silica-lmmoblllzed 8-qulnolinols is made. A posslble explanatlon of apparent discrepancies in the heterogeneous acid dissoclatlon constants of slllca-immoblllzed 8-qulnollnol Is also proposed.
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