Metatitanic Acid

• CAS: 12026-28-7
• Catalog Number: ACM12026287-2
• Category: Main Products
• Molecular Weight: 97.88
• Molecular Formula: H₂O3Ti
• Synonyms: titanium dihydroxide oxide
• Appearance: White powder
• Application: Metatitanic Acid serves as a crucial intermediate in the manufacturing process of titanium dioxide through the sulfuric acid method. Additionally, it can be utilized as a matting agent for chemical fibers, a catalyst, and an adsorbent for extracting uranium from seawater.

Case Study

Modified Metatitanic Acid Adsorbent for Fast and Efficient Lithium Extraction

Pu, Xinghong, et al. Chemical Engineering Journal, 2021, 425, 130550.

Metitanic acid (H2TiO3, HTO) is one of the most promising lithium ion sieving (LIS) adsorbents for liquid-phase lithium extraction technology. To overcome the hindrance of its adsorption kinetics, this work improves the surface properties of HTO adsorbent through a combined strategy of pore structure construction, surface heteroatom modification and bulk doping of foreign Zn ions, enabling it to quickly capture Li+ from solution. The results show that the lithium absorption rate of the optimized sample (PN-HZTO-0.04) is improved to 457% compared with the original HTO-0 adsorbent.
Preparation of various modified metatitanic acid adsorbents
· Various modified metatitanic acid adsorbents were prepared through a solid-state reaction method. Pristine HTO-0 was created by milling lithium acetate dihydrate with anhydrous alcohol, adding titanium dioxide, and calcining the mixture at 700℃ for 4 hours.
· Porous nitrogen surface modified HTO (PN-HZTO-0) was made by adding cetyltrimethyl ammonium bromide (CTAB) along with TiO2.
· To prepare porous nitrogen surface modified HTO with 4% Zn doping (PN-HZTO-0.04), (CH3COO)2Zn·2H2O was mixed with CH3COOLi·2H2O, and the mixture was calcined at 700℃.
· For porous nitrogen surface modified HTO with 10% Zn doping (PN-HZTO-0.1), the amount of (CH3COO)2Zn·2H2O was increased, and the TiO2 dosage was decreased compared to the 4% Zn doping variant. All precursors were eluted with 0.25 M HCl for 24 hours to obtain the final modified metatitanic acid adsorbents.

Metatitanic Acid Used for the Selective Synthesis of Potassium Titanate Whiskers

Cao, Jiancui, et al. Industrial & engineering chemistry research, 2010, 49(19), 9128-9134.

Using metatitanic acid and potassium carbonate as raw materials, the selective synthesis of potassium titanate whiskers was successfully achieved through a simple calcination method. By adjusting different reaction conditions, different potassium titanate whiskers can be obtained, including potassium tetratitanate, potassium hexatitanate and potassium octatitanate.
Preparation procedure of potassium titanate whiskers
· Mixing 100g of hydrous metatitanic acid (containing TiO2) with a specific amount of potassium carbonate resulted in a sticky mixture, with mole ratios of potassium carbonate to metatitanic acid at 1:2.5, 1:3.5, and 1:4.5.
· After drying the clammy mixture in an electric oven at 120 °C for 24 hours, the dried mixture was ground in a mortar. Subsequently, the ground samples were calcined at various temperatures in a muffle furnace for specific durations. Once cooled to room temperature, the calcined samples were placed in a desiccator.
· In order to produce well-crystallized potassium octatitanate, potassium tetratitanate samples were boiled in water for 12 hours. The water-boiled samples were then washed with distilled water until the conductivity of the filtrate was less than 2 mS/m. Following this, the washed samples were dried at either 120 °C or 400 °C for 24 hours before storing them in a desiccator.