Diesel particle filter (DPF) is an important after-treatment device to remove diesel soot from diesel vehicle exhaust. Platinum has high activity for the NO-assisted soot oxidation as the most popular catalytic material for catalytic filters. At present, γ-AlO is the most commonly used support. Due to the inert nature of alumina, people are committed to seeking new ways of material modification to improve the catalytic performance. Acid modification has recently become one of recognized methods with obvious effects. This review summarized the promotion effects of various acid modification methods on the catalytic performance of Pt catalysts for soot oxidation, and the so-called “acid-strengthened NO-assisted soot oxidation mechanisms” were reported. The durability of different acid modified catalysts under high-temperature calcination and sulfur poisoning was also discussed and perspectives were given to guide further research.

中文翻译：

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铂基烟灰氧化催化剂的酸改性：简短回顾


柴油颗粒过滤器（DPF）是去除柴油车尾气中柴油机烟灰的重要后处理装置。铂对于 NO 辅助烟灰氧化具有很高的活性，是催化过滤器最常用的催化材料。目前最常用的载体是γ-Al2O。由于氧化铝的惰性性质，人们致力于寻求材料改性的新途径以提高催化性能。酸改性近年来已成为公认的效果明显的方法之一。该综述总结了各种酸改性方法对Pt催化剂烟灰氧化催化性能的促进作用，并报道了所谓的“酸强化NO辅助烟灰氧化机理”。还讨论了不同酸改性催化剂在高温煅烧和硫中毒下的耐久性，并给出了指导进一步研究的观点。