The modern chemical applications of molecular sieve zeolites are catalogued and the physical and chemical basis of their properties are detailed. We present contributions to both the academic and applied chemistry of these versatile materials. The first example of the photo-oxidation of Ti(III) with the accompanying generation of hydrogen is presented in detail, and a photothermal chemical system for a "water splitting" cycle is suggested. The minor modification of zeolite 5A is demonstrated to allow the efficient separation and analysis of a number of gases without the need for temperature control equipment. The substitution of TI (III) for Al(III) in a framework aluminosilicate is suggested. A first reduction of exchanged cations in a zeolite lattice to metallic form at mild "activation" temperatures is given. Finally, a mechanism for the action of siliceous nutritional supplements is proposed.
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