Synthesis of Novel Manganese Phosphate Violet Pigment

Onoda, Hiroaki; Kanai, Shiho

doi:10.3363/prb.36.23

Cited by 7 publications

(3 citation statements)

References 10 publications

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“…The mixture was allowed to stand for one day in the mullite crucible, and then heated at 400 • C for 1 h by an electric furnace. The heating times and temperatures were determined from previous studies [9,10]. In this sample preparation, some of the manganese oxide was replaced by cobalt oxide, Co 3 O 4 (Co/Mn = 0.2/0.8, 0.5/0.5, 0.8/0.2, 1/0), and heated in the same manner.…”

Section: Methodsmentioning

confidence: 99%

“…A previous study has used manganese compounds with relatively low environmental impact to produce vivid inorganic purple pigments that do not contain harmful metals [9]. More specifically, it has been reported that a manganese compound, aluminum compound, and phosphoric acid enables the synthesis of slightly more deeply vivid violet pigments [10].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of Cobalt-Substituted Manganese Phosphate Purple Pigments

Aso

Onoda

2023

Materials

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Some manganese phosphates are known as violet pigments. In this study, pigments in which manganese was partially replaced with cobalt and aluminum was replaced with lanthanum and cerium were synthesized with a heating method to obtain pigments with a more reddish color. The obtained samples were evaluated in terms of chemical composition, hue, acid and base resistances, and hiding power. Among the samples examined, the samples obtained in the Co/Mn/La/P system were the most vivid. The brighter and redder samples were obtained by prolonged heating. Furthermore, prolonged heating improved the acid and base resistance of the samples. Finally, the substitution of manganese for cobalt improved the hiding power.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of Cobalt-Substituted Manganese Phosphate Purple Pigments

Aso

Onoda

2023

Materials

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“…[15][16][17] Manganese phosphate minerals are also well known as inorganic violet pigments. [18][19][20][21] Manganese violet is a typical commercial manganese phosphate pigment, the principal components of which have been identied as aand b-NH 4 -MnP 2 O 7 . 18 Niahite (NH 4 MnPO 4 $H 2 O) is a dittmarite-group manganese material that occurs naturally in guano deposits.…”

Section: Introductionmentioning

confidence: 99%