BISMUTH-CALCIUM COMPOUND AND ITS PRODUCTION

摘要

PROBLEM TO BE SOLVED: To obtain a novel bismuth-calcium compound expected to be utilized as an inorg. anion exchanger like a bismuth-lead compd. SOLUTION: A mixture is prepd. from a starting material in which the molar ratio among elemental bismuth, elemental calcium, elemental oxygen and the nitric acid group (NO3) is adjusted to 1:1:2:1. The mixture is allowed to react at a temperature between room temp. and 100 deg.C for a prescribed time and then heated to 200-450 deg.C to synthesize the objective bismuth-calcium compound represented by the formula BiCaO2(NO3).