Rare earth metal oxide material and preparation method and application thereof

• Main Authors: HU KANG, LI JIARONG, JING XUEQUAN, KWAK MI-NA, QIN HAONAN, LIN RUIQIAN, YAO ZHANGWEI, WAN YINHUA
• Format: Patent
• Language: Chinese; English
• Published: 29.08.2023
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention relates to a rare earth metal oxide material and a preparation method and application thereof, the preparation method comprises the following steps: mixing a rare earth metal salt, a mesoporous material and an alcohol solution, carrying out solid-liquid separation, and carrying out first drying to obtain a mixed material; and adjusting the pH value of the obtained mixed material, carrying out secondary drying, calcining, and mixing alkali liquor and the obtained calcined product to obtain the rare earth metal oxide material. Rare earth ions are uniformly distributed in a mesoporous material and react with an alkali solution to generate rare earth hydroxide, rare earth oxide generated after calcination and the mesoporous material form a composite material, the composite material is cleaned by the alkali solution and dissolved in the mesoporous material, and the composite material is prepared. The hydroxyl-containing porous rare earth metal oxide material with the selective adsorption effect is ob