US 12350652 B1Patent grantUnited States

Controlled Mixed-Oxide Nanomaterial Production

Official patent title

CuMg0.5Mn1.5O4/CuO nanocomposite material and method of making

Arabic title: مادة مركبة نانوية من CuMg.SUB.0.5.Mn.SUB.1.5.O.SUB.4./CuO وطريقة تصنيعها

Invention

Problem

Mixed-metal-oxide nanocomposite synthesis can involve complex procedures, high energy use, particle agglomeration, unstable phases, and insufficient control of crystallinity, particle morphology, or elemental distribution.

Why it matters

A reproducible route to a defined copper-magnesium-manganese oxide composite could provide a materials platform for later application-specific research, subject to independent confirmation of structure, scale-up behavior, and functional performance.

Approach

The disclosure uses a Pechini sol-gel route with metal salts, tartaric acid, and polyethylene glycol, followed by water removal and controlled calcination to form cubic CuMg0.5Mn1.5O4 and monoclinic CuO phases.

Who may benefit

Potential beneficiaries include mixed-oxide materials laboratories, catalyst and adsorbent developers, sensor researchers, environmental-remediation researchers, and manufacturers evaluating scalable sol-gel powder processes.

Potential value

The patent links a specified two-phase oxide composition and crystallite-size range to a defined precursor, stabilizer, evaporation, and calcination sequence, offering explicit process variables for reproducibility studies.

Background

Mixed-metal oxides are investigated for catalysis, sensing, and environmental remediation, but conventional preparation routes may provide uneven crystallinity, broad size distributions, particle agglomeration, or inconsistent elemental dispersion. The disclosure identifies process complexity, energy demand, morphology control, and phase stability as limitations. It proposes combining the properties of CuMg0.5Mn1.5O4 and CuO through a Pechini sol-gel process with controlled precursor concentrations and heat treatment rather than relying on an unspecified composite synthesis.

Technology overview

Tartaric acid is added to a stirred solution of magnesium nitrate hexahydrate, manganese acetate tetrahydrate, and copper acetate monohydrate. Polyethylene glycol 400 stabilizes the mixture, which is stirred at 250 °C until water evaporates and a solid forms. The solid is calcined for two to four hours at 550–850 °C. The resulting material contains cubic CuMg0.5Mn1.5O4 and monoclinic CuO, with a claimed average crystallite size of 50–90 nm and specified copper, manganese, and magnesium atomic-concentration ranges.

Potential applications

Potential catalyst-material research using a defined mixed-oxide phase system.
Potential adsorbent development after contaminant-specific testing.
Potential sensing-material studies based on the oxide composition.
Process-development studies for controlled sol-gel oxide powders.

Evidence-supported advantages

Defines both cubic CuMg0.5Mn1.5O4 and monoclinic CuO phases.
Specifies a 50–90 nm average crystallite-size range.
Provides precursor and stabilizer concentration ranges.
Provides bounded calcination temperatures and durations.

Development stage

Patent publication with a described synthesis and material characterization; independent validation and commercialization were not established.

Commercial opportunity

The material and synthesis route may interest specialty-oxide, catalyst, adsorbent, or sensor developers. Commercial assessment should establish batch reproducibility, phase purity, particle-size control, raw-material and thermal costs, safe handling, scale-up, product integration, lifecycle considerations, and independently measured performance in a clearly defined end use.

Patent classifications

WIPO IPC

B01J23/889Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J20/04Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus

CPC

B01J20/041Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J20/28004Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J20/28007Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J20/28016Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J20/3078Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J20/3085Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J23/002Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J23/72Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J23/8892Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J35/393Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J35/394Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J35/40Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J35/45Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J37/04Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J37/086Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J37/088Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J2523/17Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J2523/22Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J2523/72Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus

Inventors

First inventorEhab Abdelhamed Abdelrahman Ahmed

Keywords

CuMg0.5Mn1.5O4
CuO
nanocomposite
Pechini method
sol-gel
mixed metal oxide
calcination
crystallite size

Patent document and drawings

The patent publication is mapped to this record. Patent drawings remain within that publication; no separately cleared public media package has been supplied.