The 5th Academic and Technical Exchange Conference on Mineral Materials and the 23rd Technical Exchange Conference on Processing and Utilization of Non-metallic Minerals were successfully held at Zhangye Hotel in Zhangye City, Gansu Province from August 7th to 9th, 2025. This conference, themed "Technology Empowerment, Green Innovation, Coordinated Development, and Industrial Upgrading", brought together numerous experts, scholars, and enterprise representatives in the field of mineral materials to jointly discuss the cutting-edge technologies and development trends of the industry. Beijing Duketech Technology Co., LTD., a technology enterprise specializing in trace gas analysis technology, was invited to participate in this grand event. Li Yue, the company's sales director, delivered a special report titled "Evaluation of Catalytic Efficiency Based on Photoacoustic Spectroscopy Gas Analysis Technology", which aroused a warm response on the spot.

This conference is jointly organized by the Mineral Materials Branch of the Chinese Ceramic Society, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, and Hexi University. It focuses on the full-chain technical system of "green preparation - functional design - intelligent application", aiming to promote interdisciplinary integration and technological innovation in the field of mineral materials. As an important support for the new materials industry, the efficient and high-value utilization of mineral materials is the key to achieving the "dual carbon" goals and a circular economy. Catalytic technology plays a core role in the green preparation and functional optimization of mineral materials.

Li Yue, the sales director of Duketech, systematically introduced the principle and application advantages of photoacoustic spectroscopy gas analysis technology in his report. This technology is based on the photoacoustic effect. It generates thermal expansion pressure waves by irradiating gas with infrared light sources, achieving high-precision detection of gas concentration. It features simultaneous monitoring of multiple components (up to 10 types), a detection limit as low as the ppb level, a fast response speed (3-10 seconds), no need for consumables, and simple operation. In response to the demand for gas analysis in catalytic research, photoacoustic spectroscopy technology can monitor the concentration changes of various gases such as CH₄, CO₂, and VOCs in real time, providing precise data support for catalyst performance evaluation and reaction mechanism research.

In the report, Li Yue, the sales director of Duketech, demonstrated the practical performance of the company's DKG-PRP71 series catalytic process gas analysis system in combination with specific application scenarios. This system integrates a photoacoustic spectroscopy multi-gas analyzer with a photothermal catalytic reaction chamber, enabling online analysis of trace gases from ppm to ppb levels. It has been widely applied in fields such as NO catalytic decomposition, CO₂ catalytic reduction, and VOCs degradation. For instance, in the formaldehyde catalytic degradation experiment, this system can track the dynamic changes of formaldehyde concentration and CO₂ generation in real time, intuitively reflecting the catalytic efficiency and providing a scientific basis for process optimization.

As a high-tech enterprise deeply engaged in the field of trace gas analysis, Beijing Duketech Technology Co., Ltd. has obtained a total of 57 patents (including utility model patents, invention patents and software Copyrights) since its establishment in 2012. Its photoacoustic spectroscopy technology, with the advantage of localized services and high cost performance, has broken the market monopoly of imported products. The company's products are not only applied in catalytic research, but also promoted in fields such as environmental monitoring, petrochemicals, and materials science. It has established cooperative relationships with many research institutions and enterprises including the Chinese Academy of Sciences, Tsinghua University, and Sinopec.

At this conference, Beijing Duketech Technology Co., Ltd. had in-depth exchanges with industry experts on the gas monitoring requirements in the green preparation of mineral materials, further clarifying the application potential of photoacoustic spectroscopy technology in the fields of mineral deep processing and comprehensive utilization of resources. In the future, the company will continue to promote technological innovation, providing more accurate analysis and detection solutions for the low-carbon and efficient development of the mineral materials industry, helping the industry break through the "bottleneck" technologies, and jointly draw a blueprint for green development.