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Cu基和Pt基甲醇水蒸气重整制氢催化剂研究进展 被引量:1
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作者 刘雪 王力鹏 +7 位作者 李璐伶 王凯 刘文举 胡彪 曹道帆 江锋浩 李俊国 刘科 《物理化学学报》 北大核心 2025年第5期74-102,共29页
甲醇水蒸气重整(methanol steam reforming,MSR)反应是实现甲醇在线制氢的重要途径,在清洁能源应用中具有重要作用。MSR反应中的催化性能直接影响氢气产量和副产物组成,其中Cu基和Pt基催化剂被广泛研究。其催化机制主要涉及甲醇和水分子... 甲醇水蒸气重整(methanol steam reforming,MSR)反应是实现甲醇在线制氢的重要途径,在清洁能源应用中具有重要作用。MSR反应中的催化性能直接影响氢气产量和副产物组成,其中Cu基和Pt基催化剂被广泛研究。其催化机制主要涉及甲醇和水分子中C―H和O―H键的断裂。Cu基催化剂的活性依赖于Cu^(0)和Cu^(+)位点的比例及协同作用,Pt基催化剂则通过Pt^(0)、Pt^(δ+)或Pt^(2+)活性位点与氧空位的相互作用发挥作用。然而,活性金属与载体之间的电子转移及相互作用机制仍存争议,影响金属价态、吸附位点及反应路径选择,特别是在甲醇脱氢生成中间产物(如甲醛、甲酸和甲酸甲酯)的反应路径上,尚未形成统一认识。本文总结了Cu^(0)与Cu^(+)的单位点与协同位点机制,探讨了Pt基催化剂的直接路径与协同路径,分析In_(2)O_(3)等对Pt位点调控及氧空位生成的促进作用。通过催化性能评估与机理研究,提出了优化催化剂活性和稳定性的策略。本综述不仅深化了对MSR反应机理的理解,还为高效催化剂的设计提供了理论基础和研究方向。 展开更多
关键词 甲醇水蒸气重整制氢 Cu基和Pt基催化剂 活性位点 协同作用 反应路径
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Thioredoxin interacting protein,a key molecular switch between oxidative stress and sterile inflammation in cellular response 被引量:11
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作者 Islam N Mohamed luling li +2 位作者 Saifudeen Ismael Tauheed Ishrat Azza B El-Remessy 《World Journal of Diabetes》 SCIE 2021年第12期1979-1999,共21页
Tissue and systemic inflammation have been the main culprit behind the cellular response to multiple insults and maintaining homeostasis.Obesity is an independent disease state that has been reported as a common risk ... Tissue and systemic inflammation have been the main culprit behind the cellular response to multiple insults and maintaining homeostasis.Obesity is an independent disease state that has been reported as a common risk factor for multiple metabolic and microvascular diseases including nonalcoholic fatty liver disease(NAFLD),retinopathy,critical limb ischemia,and impaired angiogenesis.Sterile inflammation driven by high-fat diet,increased formation of reactive oxygen species,alteration of intracellular calcium level and associated release of inflammatory mediators,are the main common underlying forces in the pathophysiology of NAFLD,ischemic retinopathy,stroke,and aging brain.This work aims to examine the contribution of the pro-oxidative and pro-inflammatory thioredoxin interacting protein(TXNIP)to the expression and activation of NLRP3-inflammasome resulting in initiation or exacerbation of sterile inflammation in these disease states.Finally,the potential for TXNIP as a therapeutic target and whether TXNIP expression can be modulated using natural antioxidants or repurposing other drugs will be discussed. 展开更多
关键词 Thioredoxin interacting protein NOD-like receptor pyrin domain containing 3 INFLAMMASOME Interleukin 1b Inflammation Obesity High-fat diet ISCHEMIA REPERFUSION Oxidative stress
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