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Promoter Effects on Catalyst Selectivity and Stability for Propylene Partial Oxidation to Acrolein
Catalysis Letters ( IF 2.8 ) Pub Date : 2019-10-05 , DOI: 10.1007/s10562-019-02969-3
Patricia Anne Ignacio-de Leon , Magali Ferrandon , Louisa M. Savereide , Scott L. Nauert , Jorge Moncada , Rachel Klet , Karena Chapman , Massimiliano Delferro , Jeffrey Camacho-Bunquin , Carlos A. Carrero , Justin M. Notestein , SonBinh Nguyen

Abstract Highly dispersed silica-supported CuO x /SiO 2 catalysts were synthesized via solution-phase deposition and studied for their activity, selectivity, and stability in catalyzing the selective oxidation of propylene to acrolein. Strategies for ensuring high metal dispersion included controlling the surface density of silanols (via covalent silanol-capping) or by pre-installing different “promoter” transition metals at submonolayer coverages. A comparison of the effect of first row transition metal promoters showed that V and Cr significantly boost catalyst performance and stabilize CuO x sites against aggregation. Graphic Abstract

中文翻译:

促进剂对丙烯部分氧化制丙烯醛的催化剂选择性和稳定性的影响

摘要 采用液相沉积法合成了高度分散的二氧化硅负载的CuO x /SiO 2 催化剂,并研究了其催化丙烯选择性氧化成丙烯醛的活性、选择性和稳定性。确保高金属分散的策略包括控制硅烷醇的表面密度(通过共价硅烷醇封端)或通过在亚单层覆盖范围内预先安装不同的“促进剂”过渡金属。第一排过渡金属助催化剂的效果比较表明,V 和 Cr 显着提高了催化剂性能并稳定了 CuO x 位点以防止聚集。图形摘要
更新日期:2019-10-05
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