The Preparation of LiCeMo<SUB>2</SUB>O<SUB>8</SUB> for Novel Inorganic Yellow Pigments using Solid-State Reaction Method

• ODAKI Tsutomu

  Fine Rubber Kenkyusyo Co. Ltd.

• HASHIMOTO Kazuaki

  Department of Industrial Chemistry, Faculty of Engineering, Chiba Institute of Technology

• YOSHIDA Katsumi

  Department of Industrial Chemistry, Faculty of Engineering, Chiba Institute of Technology

• TODA Yoshitomo

  Department of Industrial Chemistry, Faculty of Engineering, Chiba Institute of Technology

Bibliographic Information

Other Title

• 固相反応法を用いた新しい黄色顔料としてのLiCeMo<SUB>2</SUB>O<SUB>8</SUB>の調製
• 固相反応法を用いた新しい黄色顔料としてのLiCeMo2O8の調製
• コソウ ハンノウホウ オ モチイタ アタラシイ キイロ ガンリョウ ト シテ ノ LiCeMo2O8 ノ チョウセイ
• The Preparation of LiCeMo2O8 for Novel Inorganic Yellow Pigments using Solid-State Reaction Method

Abstract

Some molybdates containing rare earth elements were prepared by a solid-state reaction method and their hues were evaluated for the purpose of the preparation of new inorganic pigments without harmful elements. LiPrMo₂O₈ and LiNdMo₂O₈ had narrow and sharp absorption bands of 4f-4f transition. Thus absorption bands of 4f-4f transition of trivalent rare earth ions were narrow and sharp, leading to poor reducing power. In contrast, LiCeMo₂O₈ had a broad absorption band of 4f-5d transition. It is obvious that 4f-5d transition is more suitable than 4f-4f transition as an inorganic pigment.<BR>The LiCeMo₂O₈ possessing yellow hue was investigated further. The amount of Na in Na, CeMo₂O₈ had strong influence on its hue compared with that of Li in Li_xCeMo₂O₈. It seemed to be caused by the difference of arrangement between Na and Li in the structure. Yellow hue was also obtained in LiCe_yY_1-y, Mo₂O₈ even when y was as low as 0.2. In LiCe (Mo_1-zW_z) ₂O₈, hue shifted from yellow to light yellowish gray with increasing z. The split of energy level by MoO₄^2- also had influence on hue of LiCe (Mo_1-zW_z) ₂O₈.

Journal

• Journal of the Japan Society of Colour Material

  Journal of the Japan Society of Colour Material 75 (6), 261-266, 2002

  Japan Society of Colour Material

Keywords

• Inorganic pigment
• LiCeMo<SUB>2</SUB>O<SUB>8</SUB>
• Excitation purity

Details

• CRID: 1390001205469979392
• NII Article ID: 10008805799
• NII Book ID: AN00354634
• DOI: 10.4011/shikizai1937.75.261
• COI: 1:CAS:528:DC%2BD38XmtVCjurc%3D
• NDL BIB ID: 6197541
• ISSN: 0010180X
• ISSN: http://id.crossref.org/issn/0010180X
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6197541
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed