江苏大学学报（自然科学版）2026，Vol.47Issue(2)：166-174,9.DOI:10.3969/j.issn.1671-7775.2026.02.006
硫中毒对Cu-SSZ-13催化剂氨气选择性催化还原NOx的影响
Effect of sulfur poisoning on Cu-SSZ-13 for selective catalytic reduction of NOx by ammonia
摘要
Abstract
To investigate the effect of SO2 on the activity of Cu-SSZ-13 catalyst,the catalyst was subjected to sulfurization treatment with different SO2 concentrations.The structure,surface element content,acid content and other physicochemical properties of the catalyst before and after SO2 sulfurization were analyzed by X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),temperature programmed desorption by ammonia(NH3-TPD)and temperature programmed reduction by hydrogen(H2-TPR).The results show that the low-temperature activity of Cu-SSZ-13 catalyst is significantly decreased after SO2 sulfurization,and the activity of the catalyst sample poisoned by 200×10-6 sulfur dioxide at 250 ℃ is decreased by nearly 70％.After SO2 sulfurization,the copper ion in Cu-SSZ-13 reacts with sulfur dioxide to form copper sulfate,which decreases the Cu2+active site and Lewis acid site in the catalyst,while the content of copper sulfate in the catalyst sample is increased with the increase of sulfur dioxide concentration.关键词
柴油机/催化剂/Cu-SSZ-13/选择性催化还原/硫中毒Key words
diesel engine/catalyst/Cu-SSZ-13/selective catalytic reduction/sulfur poisoning分类
能源科技引用本文复制引用
孙平,杜健瑜,刘军恒,嵇乾,王永旭,张华斌..硫中毒对Cu-SSZ-13催化剂氨气选择性催化还原NOx的影响[J].江苏大学学报（自然科学版）,2026,47(2):166-174,9.基金项目
国家自然科学基金资助项目(51806086) （51806086）
