Xuan Zhang , Jiaxin Liu , Jinglei Tian , Jinzhe Liu , Xiong Yang , Yingshu Liu , Jinjuan Li , Chuanzhao Zhang , Ziyi Li
{"title":"优化悬浮-水洗涂层，制备用于烟道气 CO 净化的铜锰氧化物结构催化剂","authors":"Xuan Zhang , Jiaxin Liu , Jinglei Tian , Jinzhe Liu , Xiong Yang , Yingshu Liu , Jinjuan Li , Chuanzhao Zhang , Ziyi Li","doi":"10.1016/j.colsurfa.2024.135714","DOIUrl":null,"url":null,"abstract":"<div><div>Structured catalysts play significant role in nowaday environmental industry. The copper-manganese oxide (Cu-Mn) is a low cost and efficient catalyst for CO purification from flue gas, for which a robust preparation regarding stabilized suspension and washcoat process is still lacked. This work addressed this challenge by constructing the catalyst suspension by introducing absorbent polymer (SAP), polyvinyl alcohol (PVA), and nano-silica sol (SiO<sub>2</sub>-NA). The effects of the dosage of SAP, PVA, and SiO<sub>2</sub>-NA on suspension properties including viscosity, water-retention capacity and stability were systematically studied. The combined effect of the three additives regarding electrostatic-sterical stability and regionalized coating is demonstrated to avoids the destruction of connection between SiO<sub>2</sub>-NA and Cu-Mn due to the thermal stress during the drying process. After calcination, SiO<sub>2</sub>-NA is efficiently utilized, evenly distributed and tightly bonded to Cu-Mn catalyst, rendering strongly-attached, crack-free and compact washcoated layer. The optimized structured catalyst shows appreciable balance of loading (up to 182 kg/m<sup>3</sup>) and strength (powder shedding rate <1 wt%) without blockage. The potential of practical application was verified by CO purification from realistic iron-ore sintering flue gas with catalytic efficiency of above 90 % for 240 h. These findings indicated a promising strategy to design Cu-Mn structured catalysts efficient for industrial use.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"705 ","pages":"Article 135714"},"PeriodicalIF":4.9000,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Suspension-washcoat optimization for preparing copper-manganese oxide structured catalyst towards flue gas CO purification\",\"authors\":\"Xuan Zhang , Jiaxin Liu , Jinglei Tian , Jinzhe Liu , Xiong Yang , Yingshu Liu , Jinjuan Li , Chuanzhao Zhang , Ziyi Li\",\"doi\":\"10.1016/j.colsurfa.2024.135714\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Structured catalysts play significant role in nowaday environmental industry. The copper-manganese oxide (Cu-Mn) is a low cost and efficient catalyst for CO purification from flue gas, for which a robust preparation regarding stabilized suspension and washcoat process is still lacked. This work addressed this challenge by constructing the catalyst suspension by introducing absorbent polymer (SAP), polyvinyl alcohol (PVA), and nano-silica sol (SiO<sub>2</sub>-NA). The effects of the dosage of SAP, PVA, and SiO<sub>2</sub>-NA on suspension properties including viscosity, water-retention capacity and stability were systematically studied. The combined effect of the three additives regarding electrostatic-sterical stability and regionalized coating is demonstrated to avoids the destruction of connection between SiO<sub>2</sub>-NA and Cu-Mn due to the thermal stress during the drying process. After calcination, SiO<sub>2</sub>-NA is efficiently utilized, evenly distributed and tightly bonded to Cu-Mn catalyst, rendering strongly-attached, crack-free and compact washcoated layer. The optimized structured catalyst shows appreciable balance of loading (up to 182 kg/m<sup>3</sup>) and strength (powder shedding rate <1 wt%) without blockage. The potential of practical application was verified by CO purification from realistic iron-ore sintering flue gas with catalytic efficiency of above 90 % for 240 h. These findings indicated a promising strategy to design Cu-Mn structured catalysts efficient for industrial use.</div></div>\",\"PeriodicalId\":278,\"journal\":{\"name\":\"Colloids and Surfaces A: Physicochemical and Engineering Aspects\",\"volume\":\"705 \",\"pages\":\"Article 135714\"},\"PeriodicalIF\":4.9000,\"publicationDate\":\"2024-11-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Colloids and Surfaces A: Physicochemical and Engineering Aspects\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0927775724025780\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0927775724025780","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Suspension-washcoat optimization for preparing copper-manganese oxide structured catalyst towards flue gas CO purification
Structured catalysts play significant role in nowaday environmental industry. The copper-manganese oxide (Cu-Mn) is a low cost and efficient catalyst for CO purification from flue gas, for which a robust preparation regarding stabilized suspension and washcoat process is still lacked. This work addressed this challenge by constructing the catalyst suspension by introducing absorbent polymer (SAP), polyvinyl alcohol (PVA), and nano-silica sol (SiO2-NA). The effects of the dosage of SAP, PVA, and SiO2-NA on suspension properties including viscosity, water-retention capacity and stability were systematically studied. The combined effect of the three additives regarding electrostatic-sterical stability and regionalized coating is demonstrated to avoids the destruction of connection between SiO2-NA and Cu-Mn due to the thermal stress during the drying process. After calcination, SiO2-NA is efficiently utilized, evenly distributed and tightly bonded to Cu-Mn catalyst, rendering strongly-attached, crack-free and compact washcoated layer. The optimized structured catalyst shows appreciable balance of loading (up to 182 kg/m3) and strength (powder shedding rate <1 wt%) without blockage. The potential of practical application was verified by CO purification from realistic iron-ore sintering flue gas with catalytic efficiency of above 90 % for 240 h. These findings indicated a promising strategy to design Cu-Mn structured catalysts efficient for industrial use.
期刊介绍：
Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena.
The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
