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I haven’t logged into the forum for a few days; I’m posting several threads here in the hope that they will be helpful to everyone. Note: The information I provide is for reference only. The Department of Chemistry at Fudan University has completed an assessment of the catalytic reaction lifetime of the industrial catalyst used in the methanol-to-propylene (MTP) process. This catalyst was developed through independent innovation by the Department of Chemistry at Fudan University, in collaboration with Shanghai Fuxu Molecular Sieve Co., Ltd. The reaction raw material is industrial crude methanol (mass fraction 90%–92%). Methanol yields products through two catalytic reactors at different temperatures. The temperature of the upstream reactor is 180–250°C, while that of the downstream reactor is 460–520°C. The liquid space velocity of the feed material is 1.0–1.5 h⁻¹. The one-way conversion rate of methanol is greater than 90%, the yield of olefins is greater than 60%, and the mass ratio of propylene to ethylene is 3–7; this ratio can be adjusted as needed. The reaction by-products are C1-7 petroleum gases and gasoline components. The catalyst activity remains stable, and fresh catalysts are subjected to various reaction kinetics experiments to determine the appropriate reaction conditions. After activation in the reactor, the catalyst was evaluated for its lifetime; it has undergone continuous catalytic reactions for over 1,000 hours while still maintaining high activity and selectivity. The catalyst can be regenerated under mild conditions, and its activity, selectivity, and stability can be fully restored after regeneration. This catalyst is produced from domestic industrial raw materials, features a simple manufacturing process, easy quality control, good reproducibility in preparation, and low emissions of waste gases, wastewater, and solid waste during production. The catalyst can be made in strip (column) or pellet form as required, with a strength of over 30 N per particle.