摘要
以氧化铝为载体,采用浸渍法制备RS-180催化剂,通过XRD、SEM、压汞法等手段对催化剂进行表征,考察催化剂乙烯环氧化法制环氧乙烷的性能。结果表明,α-Al_(2)O_(3)为片状且具有创新性“互锁”结构,有助于提高银纳米粒子的分散度;该催化剂运行700 h时,环氧乙烷选择性可达88%,并呈现稳定上升趋势;当运行900 h后,环氧乙烷选择性提升至89%,能够持续稳定地运行,确保催化性能的高效性,为环氧乙烷的高效生产以及下游产业的稳定发展提供了坚实可靠的技术支撑,有望推动整个环氧乙烷产业链的优化升级。
Using Al_(2)O_(3)as the support,RS-180 catalyst was prepared via the impregnation method and characterized by XRD,SEM,and mercury intrusion porosimetry to evaluate its performance in ethylene epoxidation to produce ethylene oxide.Results showed thatα-Al_(2)O_(3)exhibited a lamellar morphology with an innovative“interlocking”structure,enhancing the dispersion of silver nanoparticles.The catalyst achieved an ethylene oxide selectivity of 88%after 700 h of operation,with a stable upward trend,reaching 89%after 900 h,maintaining consistent performance.This provides reliable technical support for efficient ethylene oxide production and the stable development of downstream industries,promising to drive optimization and upgrading of the ethylene oxide industrial chain.
作者
刘兵
孙秋实
LIU Bing;SUN Qiushi(Rezel Engineering Co.,Ltd.,Rezel Catalysts Co.,Ltd.,Shanghai 201313,China)
出处
《工业催化》
2025年第8期50-54,共5页
Industrial Catalysis
