一种低温高空速抗水硫纳米纤维自堆积微米球形脱硝催化剂及制备方法和应用
By preparing a nanofiber self-stabilized micron-sized spherical cerium-manganese composite oxide denitrification catalyst, the problems of low activity and poor water-sulfur stability at low temperature and high air velocity during the cold start stage of motor vehicles were solved, achieving efficient NOx purification and stability, and making it suitable for complex operating conditions.
CN122399795APending Publication Date: 2026-07-17NANJING TECH UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NANJING TECH UNIV
- Filing Date
- 2026-05-18
- Publication Date
- 2026-07-17
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Figure CN122399795A_ABST
Abstract
本发明涉及一种低温高空速抗水硫纳米纤维自堆积微米球形脱硝催化剂及制备方法和应用，属于环境污染治理领域。该方法以金属硝酸盐为活性组分前驱体，丙三醇、葡萄糖和尿素为形貌调控剂，通过溶剂热法制备得到具有特殊形貌的纳米纤维自堆积的表面粗糙微米球形脱硝催化剂，葡萄糖在高温高压溶剂热环境下脱水碳化作为模板，丙三醇弱还原性调节金属价态且高粘稠度抑制缩聚的碳球团聚，从而实现均匀成核，尿素提供碱性反应环境促进金属相均匀沉淀，从而实现定向生长。该催化剂在低温、高空速下表现出优异活性和水硫稳定性。
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