【Ten Years of Great Progress in Chemical Technology】New toluene disproportionation catalysts approved from 2023 to 2038

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This post was last edited by FishSwimmingInTheDesert on September 5, 2023, at 12:15. Over the past decade, there has been tremendous development in chemical engineering and technology; truly, it’s a glorious era for China’s prosperity and strength! This post serves as a starting point for discussion; we welcome everyone to participate so that the conversation can be more lively. With your participation, this forum becomes even more wonderful. This is a continuously updated compilation post on “Ten Years of Great Development in Chemical Engineering Equipment”; feel free to join the discussions: https://bbs.hcbbs.com/thread-3576046-1-1.html. It’s essential to enhance awareness regarding quality and promote high-quality development. In August 2023, the project titled “Industrial Test of Toluene Disproportionation Catalyst with Low Aromatic Loss,” undertaken by the Shanghai Research Institute of Petrochemical Technology, successfully passed the evaluation conducted by the Science and Technology Department of China Petroleum & Chemical Corporation. The expert group believes that the toluene disproportionation catalyst developed for this project features low hydrogen consumption, low aromatic loss, and high xylene yield, with its overall performance being at the international leading level. The successful development of this technology can provide strong support for reducing costs and increasing efficiency in the aromatic chemicals industry, as well as for its sustainable, low-carbon development. 　　Based on the bifunctional catalyst developed through reaction structure-activity relationship studies, this project significantly reduced aromatic loss and increased xylene selectivity; moreover, through innovations in molecular sieve materials, catalysts, and processes, it addressed issues such as benzene ring hydrocracking and demethylation side reactions in traditional toluene disproportionation technologies. 　　This catalyst underwent scale-up testing and industrial production at Shanghai Catalyst Company, and was put into industrial use in the aromatic compounds plants of Tianjin Petrochemical and Shanghai Petrochemical. The operation results show that the catalyst functions properly in the device, with good calibration results. To date, the project has filed 10 invention patents, of which 6 have been granted.