US 12478956 B1Patent grantUnited States

Calcium–Iron Oxide Functional Nanomaterial

Official patent title

Calcium iron oxide/magnesium oxide/calcium oxide/carbon nanocomposite material

Arabic title: مادة نانو مركبة من أكسيد حديد الكالسيوم/أكسيد المغنيسيوم/أكسيد الكالسيوم/الكربون

Invention

Problem

Multiphase oxide materials can suffer from inconsistent phase composition, crystallite size, and morphology. A controlled synthesis route is needed before their functional properties can be compared for a selected application.

Why it matters

A reproducible calcium–iron–magnesium oxide composite could provide a platform for future catalytic, environmental, ceramic, or electrochemical studies.

Approach

The material combines elemental carbon with orthorhombic Ca2Fe2O5, cubic MgO, and cubic CaO and is prepared by chelated solution-gel processing and calcination.

Who may benefit

Potential beneficiaries include advanced-ceramics laboratories, catalyst researchers, environmental-material developers, electrochemical-material groups, and specialty-powder manufacturers.

Potential value

The patent defines four constituent phases or elements, atomic-composition windows, 50–75 nm crystallites, several particle morphologies, and a solution-to-calcination manufacturing route.

Background

Calcium ferrite, magnesium oxide, calcium oxide, and carbon can provide different basic, redox, structural, and conductive characteristics. Combining them may create interfaces relevant to catalysis, adsorption, ceramics, or electrochemistry. Those uses remain potential until application-specific tests establish activity, capacity, stability, or conductivity. The patent focuses on phase and morphology control through a chelated gel route. It includes source-text naming errors in precursor descriptions, which should be resolved before process replication or technology transfer.

Technology overview

The claimed composite contains 1–5 at.% C, 50–75 at.% O, 10–35 at.% Mg, 10–35 at.% Ca, and 5–15 at.% Fe. XRD gives a 50–75 nm average crystallite size, and microscopy describes irregular agglomerates, spherical nanostructures, and interconnected structures. An aqueous chelator solution is mixed with iron, magnesium, and calcium salts, glycol forms a gel, the gel is dried at 150–300 °C, and the powder is calcined at 600–800 °C. Carbon can remain from tartaric acid or PEG 400.

Potential applications

Multiphase oxide-material research.
Catalyst and adsorbent screening.
Advanced ceramic-powder development.
Electrochemical material evaluation.

Evidence-supported advantages

Combines calcium, iron, magnesium, and carbon phases.
Defines elemental and crystallite-size ranges.
Provides several described particle morphologies.
Uses a solution-gel preparation route.
Allows carbon retention from organic process components.

Development stage

Laboratory synthesis and phase, elemental, crystallite, and morphology characterization are described; application-specific performance, batch reproducibility, scale-up, and commercialization were not established. The development stage was not independently verified.

Commercial opportunity

The material is a platform powder rather than a validated product. Collaboration should define an end use, reproduce phases and morphology across batches, measure relevant catalytic, adsorption, ceramic, or electrochemical properties, resolve precursor naming errors, quantify yield and impurity levels, assess scale-up and calcination cost, and establish handling and quality-control specifications.

Patent classifications

WIPO IPC

B01J23/78Chemical 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
C02F101/20Treatment of water, wastewater, sewage or sludge

CPC

B01J37/036Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J20/06Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J20/3028Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J23/78Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J37/084Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J20/041Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J35/51Chemical 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
B01J20/3078Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
C02F1/288Treatment of water, wastewater, sewage or sludge
B01J20/3042Chemical 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
B01J35/394Chemical 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
B01J37/04Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J21/18Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J20/20Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
B01J23/02Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
C02F1/283Treatment of water, wastewater, sewage or sludge
C02F2101/20Treatment of water, wastewater, sewage or sludge
C02F1/281Treatment of water, wastewater, sewage or sludge

Inventors

First inventorEhab Abdelhamed Abdelrahman Ahmed

Keywords

calcium ferrite
magnesium oxide
calcium oxide
carbon nanocomposite
sol-gel
calcination
multiphase material

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.