METHOD OF PRODUCING ORTHO LITHIUM SILICATE, METHOD OF PRODUCING META LITHIUM SILICATE, AND METHOD OF PRODUCING CARBON-DIOXIDE ABSORBING MATERIAL

• Main Author: OKUBO KUNIO
• Format: Patent
• Language: English; Japanese
• Published: 20.05.2021
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

To provide a method of producing ortho lithium silicate (Li4SiO4), capable of producing Li4SiO4 of a single phase according to X-ray diffraction, in an industrially advantageous way.SOLUTION: The method of producing ortho lithium silicate comprises a mixing process of mixing meta lithium silicate represented by Li2SiO3 and a lithium compound (1) to obtain a reaction precursor comprising the meta lithium silicate and the lithium compound (1), and a calcination process of calcining the reaction precursor to obtain ortho lithium silicate represented by Li4SiO4.SELECTED DRAWING: Figure 1 【解決課題】工業的に有利な方法で、Ｘ線回折的に単相のＬｉ４ＳｉＯ４を生成させることができるオルト珪酸リチウム（Ｌｉ４ＳｉＯ４）の製造方法を提供すること。【解決手段】Ｌｉ２ＳｉＯ３で表されるメタ珪酸リチウムとリチウム化合物（１）とを混合し、該メタ珪酸リチウムとリチウム化合物（１）とを含有する反応前駆体を得る混合工程と、該反応前駆体を焼成し、Ｌｉ４ＳｉＯ４で表されるオルト珪酸リチウムを得る焼成工程と、を有することを特徴とするオルト珪酸リチウムの製造方法。【選択図】図１