Boehmite with different morphologies as well as preparation method and application of boehmite

• Main Authors: SONG JIAQING, XU XIANGYU, ZHAO CHUNLIN, SUN JIANCHUAN
• Format: Patent
• Language: Chinese; English
• Published: 17.11.2023
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; INORGANIC CHEMISTRY; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; METALLURGY; NANOTECHNOLOGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention relates to the technical field of porous adsorption materials, and discloses boehmite with different morphologies as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) dropwise adding a sodium metaaluminate solution into an aluminum sulfate solution to obtain a suspension; (2) crystallizing the suspension to obtain a crystallized product; filtering, washing and drying the crystallized product to obtain boehmite with different morphologies; when the pH value of the suspension is 8.5-9.5, the crystallization temperature is 80-115 DEG C and the crystallization time is 0.2-1 hour, the boehmite is in a sheet shape; when the pH value of the suspension is 9.6-10.0, the crystallization temperature is 120-150 DEG C and the crystallization time is 3-10 hours, the boehmite is fibrous; the pH value of the suspension is 10.1-12.0, the crystallization temperature is 155-200 DEG C, the crystallization time is 1-3 hours, and the boehmite is in a rhomb