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German researchers develop technique with magnetic field that increases ammonia production efficiency and boosts sustainable fertilizers.
German researchers have developed a technique capable of significantly increasing ammonia production by using a magnetic field during the manufacture of electrocatalysts. According to a publication by Phys.org on June 1, 2026, the advancement may represent an important step towards making the chemical industry more efficient, reducing energy consumption, and accelerating the development of sustainable fertilizers on a global scale.
The discovery was conducted by a team led by Marcel Risch from Helmholtz-Zentrum Berlin and Sanjay Mathur from the University of Cologne. The results indicate that the application of a 1 Tesla magnetic field during the chemical synthesis of catalytic materials generates more efficient structures for the conversion of nitrate into ammonia, a substance essential for modern agriculture.
Ammonia production gets a boost with new magnetism-based technique
Ammonia production is among the most important industrial processes on the planet. The substance is widely used in the manufacture of agricultural fertilizers, chemical products, and various industrial compounds.
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The challenge is that the main technology currently used, known as Haber-Bosch, still requires a huge amount of energy. Widely accepted estimates indicate that the process consumes between 1% and 2% of all energy produced worldwide. Additionally, it is responsible for approximately 1% of the annual global greenhouse gas emissions.
In this scenario, any improvement in ammonia production attracts the interest of the scientific community and the industrial sector.
How the magnetic field modifies the structure of catalysts
The differential of the research lies in the use of a 1 Tesla magnetic field during the chemical vapor deposition employed in the manufacture of thin films of cobalt ferrite (CoFe₂O₄).
According to the researchers, the process alters the structural organization of the material. As a result, the surface of the films becomes rougher and presents a greater number of active areas available for chemical reactions.
In practice, this means that the catalyst can interact more efficiently with the reagents, favoring the chemical conversion necessary to generate ammonia.
Another important aspect is that the benefits remain even after the removal of the magnetic field, something that increases the industrial application potential of the technology.
Chemical synthesis creates more efficient materials for nitrate conversion
The chemical synthesis used by the scientists was one of the central factors for the results obtained.
During the experiments, the researchers observed that the materials produced under magnetic influence exhibited characteristics that directly favor catalytic performance.
According to the theoretical calculations performed by the team, the Co²⁺ ions present in the structure help reduce competing reactions that normally decrease the efficiency of the process.
Among the main benefits observed are:
- Greater selectivity of chemical reactions;
- Better utilization of reagents;
- Reduction of energy losses;
- Increase in catalytic efficiency;
- Potential for future industrial applications.
These characteristics make magnetically assisted chemical synthesis a promising approach for various areas of materials engineering.
Ammonia production records performance up to 22 times higher
One of the results that drew the most attention was the performance of CoFe₂O₄ films produced under magnetic influence.
According to the data released by the team, these materials generated up to 22 times more ammonia than pure iron oxide samples prepared under similar conditions.
Additionally, the researchers report that the technique allowed for efficiency gains capable of tripling ammonia production in certain scenarios evaluated during the tests.
Although further studies are needed to validate large-scale application, the numbers demonstrate the potential of the technology.
Sustainable fertilizers may be the greatest beneficiaries of the discovery
A large portion of the ammonia produced worldwide is destined for agriculture. Therefore, advances related to ammonia production tend to have a direct impact on global food security.
Sustainable fertilizers appear as one of the most promising areas for the application of the new technology. This is because reducing energy consumption during manufacturing can decrease the environmental footprint of agricultural inputs.
Among the possible positive impacts are:
- Lower energy consumption in the production chain;
- Reduction of emissions associated with manufacturing;
- Increased efficiency of industrial processes;
- Greater competitiveness of the agricultural sector;
- Expansion of sustainable fertilizers in different markets.
With the global demand for food growing, solutions that combine productivity and sustainability are gaining increasing importance.
Microscopic images reveal the effect of the magnetic field
To better understand the results, the team used advanced electron microscopy techniques.
The analyses showed that the intensity of the magnetic field directly influences the surface roughness of the produced materials. The more intense the field applied during manufacturing, the greater the surface area available for reactions.
This characteristic is considered fundamental to explain the increase in efficiency observed in the experiments.
The researchers highlight that the expansion of the active area favors contact between the reagents and the catalytic sites responsible for chemical conversion.
Industrial innovation opens new frontiers for chemical engineering
The discovery should not only benefit agriculture. The researchers believe that the technique can contribute to different segments of the chemical industry.
For Sanjay Mathur and Marcel Risch, the introduction of magnetism as a control variable represents a new approach to the development of advanced materials.
This industrial innovation can stimulate research related to:
- Electrochemical conversion of molecules;
- Production of clean fuels;
- Energy storage technologies;
- Development of new catalysts;
- Low-carbon industrial processes.
The expectation is that future research will explore similar applications in other strategic areas of the economy.
The future of ammonia production involves smarter materials
The study shows how small changes during the manufacturing of materials can generate significant performance gains.
By combining magnetic fields, advanced chemical synthesis, and materials engineering, scientists have created a new pathway to make ammonia production more efficient and sustainable.
The results also reinforce the potential of sustainable fertilizers and demonstrate how industrial innovation can contribute to addressing challenges related to energy, food security, and the reduction of global emissions.
Although there are still important steps before the commercial adoption of the technology, the data obtained by German researchers indicate that the use of magnetic fields in catalyst manufacturing could play a significant role in the next generation of high-efficiency chemical processes.
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