After experimental exploration, the Laboratory of Environmental Materials, Institute of Technology and Biology, Hefei Institute of Material Science, Chinese Academy of Sciences has made progress in the research on the improvement of the pore structure of domestic diatomite, and has developed three effective methods that can significantly improve the pore structure of domestic diatomite. These methods are simple and synergistic. This work has recently been officially accepted by the authoritative journal Microporous and Mesoporous Materials in the field of porous materials, and related technologies have applied for national invention patents.
As a porous material, diatomite is widely used in catalyst carriers. However, due to the unreasonable pore size distribution and the large number of pores blocked by impurities, the domestic diatomite seriously affected its function as a catalyst carrier, and also forced many catalyst manufacturers in China to purchase high-priced imported diatomite, which caused the company to carry a high burden. The production cost also hinders the development of Chinese companies that use diatomite as the basis for preparing catalysts.
Under the guidance of mentor Wu Zhengyan, the 2011 master student Zhang Guilong made an exploration for solving this problem. In order to improve the domestic diatomite and make it suitable as a catalyst carrier, the Environmental Materials Laboratory of the Institute of Technology and Biology explored three easy-to-operate ways to improve the pore structure of diatomite (chemical treatment combined with physical centrifugation and cavitation). This approach has a synergistic effect on the improvement of diatomite, which can significantly improve the purity of domestic diatomite, dredge the pores of domestic diatomite, and make its pore size distribution tend to be reasonable.
This study provides a reference for improving the microstructure of domestic diatomite and promoting its application in the field of catalyst carriers.
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