A process for preparing sodium bicarbonate particles, comprising the steps of: (a) adding at least one alkali metal carbonate to an aqueous solution in order to form an aqueous composition; wherein the alkali metal carbonate comprises sodium carbonate and wherein the aqueous composition comprises at least one polycarboxylic acid and/or the salts thereof, in an amount of at least 200 ppm based on the weight of the aqueous composition; and (b) precipitating solid particles comprising sodium bicarbonate crystals and separating said sodium bicarbonate particles from the aqueous composition, in order to obtain sodium bicarbonate particles and an aqueous mother liquor.

The present invention relates to a mixed oxide containing a) a mixed-substituted lithium manganese spinel in which some of the manganese lattice sites are occupied by lithium ions and b) a boron-oxygen compound.

Furthermore, the present invention relates to a process for its preparation and the use of the mixed oxide as electrode material for lithium ion batteries.

The present invention concerns a process for the production of metal doped cerium compositions comprising a cerium oxide and a metal oxide by precipitation. The invention also concerns metal doped cerium compositions providing high crystallites size and exhibiting high thermal stabilities, which may be used as a catalytic support or for polishing applications.

The present application discloses a lithium nickel manganate positive electrode material, a preparation method therefor and an application thereof. The lithium nickel manganate positive electrode material has a molecular formula of Li.sub.Ni.sub.Mn.sub.2-M.sub.O.sub.4-/N, where 0.951.1, 0.40.6, 0.00050.02, 00.2, M is a single-crystal dispersing element, and M is at least one of V, Nb, Ta, Mo or W; N represents a coating layer, and the coating layer includes a P compound and/or an Al compound, and a coating amount of N is 500-10000 ppm. By means of adding a small amount of a single-crystal dispersing element (V, Nb, Ta, Mo or W), a high-voltage nickel manganese material having good dispersity of single crystals is prepared. By means of uniformly coating the P compound and/or the Al compound to the lithium nickel manganate positive electrode material, the direct contact between the positive electrode material and an electrolyte, is avoided.

A mixed oxide containing a) a mixed-substituted lithium manganese spinel in which some of the manganese lattice sites are occupied by lithium ions and b) a boron-oxygen compound. Furthermore, a process for its preparation and the use of the mixed oxide as electrode material for lithium ion batteries.

Described herein are methods for forming inorganic composite oxides. Such methods include combining, at a substantially constant pH of between about 5 and about 6.75 over a period of at least about 5 minutes, an acidic precursor composition and a basic composition to form a precipitate composition, wherein the acidic precursor composition comprises an alumina precursor, a ceria precursor, a zirconia precursor and optionally one or more dopant precursors; stabilizing the precipitate by increasing the pH of the precipitate composition to between about 8 and about 10; and calcining the stabilized precipitate to form an inorganic composite oxide. Also described are inorganic composite oxides formed using such methods.

The present invention relates to a mixed oxide of zirconium, of cerium, of lanthanum and optionally of at least one rare earth metal other than cerium and lanthanum (REM), characterized by BET specific surfaces, a specific range of pores and the process for preparing such a mixed oxide.