MPC pastes were produced by blending a powder mixture of potassium dihydrogen phosphate (KDP > 99%, sourced from SIGMA-ALDRICH, Darmstadt, Germany), high-purity magnesia (MgO > 99%, obtained from Merck, Darmstadt, Germany), and zeolite of the chabazite type (Zeolite Zn-324-09 BOWIE chabazite, Azlb-Ca) known as Zeofume (dv50-15 micron). To regulate the paste’s setting time, borax was employed as a set retarder.
The magnesia underwent a meticulous calcination process lasting two hours at a temperature of 1005 °C, strategically employed to refine its properties by reducing its reactivity. Noteworthy is the deliberate exclusion of aggregates from the experimental setup to prevent potential interference from associated contaminants. The synthesis protocol commenced with the fusion of acid and magnesium, supplemented by the introduction of borax as a retardant agent. Employing two distinct ratios, Mg/P = 2 and Mg/P = 4, precise measurements of solvent levels were meticulously observed. Subsequently, the introduction of zeolite into the mixture marked a pivotal stage in the synthesis process.
The magnesia underwent a meticulous calcination process lasting two hours at a temperature of 1005 °C, strategically employed to refine its properties by reducing its reactivity. Noteworthy is the deliberate exclusion of aggregates from the experimental setup to prevent potential interference from associated contaminants. The synthesis protocol commenced with the fusion of acid and magnesium, supplemented by the introduction of borax as a retardant agent. Employing two distinct ratios, Mg/P = 2 and Mg/P = 4, precise measurements of solvent levels were meticulously observed. Subsequently, the introduction of zeolite into the mixture marked a pivotal stage in the synthesis process.
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