Re. Simpson et al., ENZYME-CATALYZED INORGANIC PRECIPITATION OF ALUMINUM BASIC SULFATE, Journal of the American Ceramic Society, 81(5), 1998, pp. 1377-1379
Particles of aluminum basic sulfate were synthesized from homogeneous
solutions of aluminum acetate, sodium sulfate, urea, and the enzyme ur
ease at room temperature, The urease was used to decompose the urea, T
he decomposition provided a controlled increase in the pH of the solut
ion, from 5 to 9.