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Journal of Natural Gas Chemistry 2010年第2期19卷 134-138页

作者： enyan long Xiaoyu Zhang Yile Li Zhimin Liu Yun Wang Maochu Gong Yaoqiang Chen Key Laboratory of Green Chemistry ＆ Technology Ministry of Education College of Chemistry Sichuan University Chengdu 610064 Sichuan China

Pd-based catalysts modified by cobalt were prepared by co-impregnation and sequential impregnation methods,and characterized by X-ray powder diffraction （XRD）,N2 adsorption/desorption （Brunauer-Emmet-Teller method）,CO-chemisorption and X-ray photoelectron spectroscopy （XPS）.The activity of Pd catalysts was tested in the simulated exhaust gas from lean-burn natural gas *** effect of Co on the performance of water poisoning resistance for Pd catalysts was estimated in the simulated exhaust gas with and without the presence of water *** was found that the effect of Co significantly depended on the preparation ***/La-Al2O3 catalyst prepared by co-impregnation exhibited better water-resistant *** results of XPS indicated that both CoAl2O4 and Co3O4 were present in the Pd catalysts modified by *** the catalyst prepared by sequential impregnation method,the ratio of CoAl2O4/Co3O4 was higher than that of the catalyst prepared by co-impregnation *** could be concluded that Co3O4 played an important role in improving water-resistant performance.

关键词： Co Pd-only catalyst lean-burn natural gas vehicles methane oxidation water vapor

CeO_2-ZrO_2-La_2O_3-Al_2O_3 composite oxide and its supported palladium catalyst for the treatment of exhaust of natural gas engined vehicles

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Journal of Natural Gas Chemistry 2009年第2期18卷 139-144页

作者： Xiaoyu Zhang enyan,long Yile Li Jiaxiu Guo Lijuan Zhang Maochu Gong Minghua Wang Yaoqiang Chen Key Laboratory of Green Chemistry ＆ Technology of the Ministry of Education College of Chemistry Sichuan University Chengdu 610064 Sichuan China College of Architecture and Environment Sichuan University Chengdu 610064 Sichuan China State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 Liaoning China Sichuan Tianyi Science ＆ Technology Co. Ltd. Chengdu 610225 Sichuan China

Composite supports CeO2-ZrO2-Al2O3（CZA） and CeO2-ZrO2-Al2O3-La2O3（CZALa） were prepared by co-precipitation method. Palladium catalysts were prepared by impregnation and their purification ability for CH4, CO and NOx in the mixture gas simulated the exhaust from natural gas vehicles （NGVs） operated under stoichiometric condition was investigated. The effect of La2O3 on the physicochemical properties of supports and catalysts was characterized by various techniques. The characterizations with X-ray diffraction （XRD） and Raman spectroscopy revealed that the doping of La2O3 restrained effectively the sintering of crystallite particles, maintained the crystallite particles in nanoscale and stabilized the crystal phase after calcination at 1000 ℃. The results of N2-adsorption, H2-temperatnre-programmed reduction （H2-TPR） and oxygen storage capacity （OSC） measurements indicated that La2O3 improved the textural properties, reducibility and OSC of composite supports. Activity testing results showed that the catalysts exhibit excellent activities for the simultaneous removal of methane, CO and NOx in the simulated exhaust gas. The catalysts supported on CZALa showed remarkable thermal stability and catalytic activity for the three pollutants, especially for NOx. The prepared palladium catalysts have high ability to remove NOx, CH4 and CO, and they can be used as excellent catalysts for the purification of exhaust from NGVs operated under stoichiometric condition. The catalysts reported in this work also have significant potential in industrial application because of their high performance and low cost.

关键词： Pd catalysts natural gas vehicles exhaust methane oxidation NOx conversion CeO2-ZrO2-Al2O3 La2O3

Influence of CeO_2 and La_2O_3 on properties of palladium catalysts used for emission control of natural gas vehicles

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Journal of Natural Gas Chemistry 2009年第4期18卷 415-420页

作者： Yile Li Xiaoyu Zhang enyan long Hongmei Li Dongdong Wu Li Cai Maochu Gong Yaoqiang Chen Key Laboratory of Green Chemistry ＆ Technology of the Ministry of Education College of Chemistry Sichuan University Chengdu 610064 Sichuan China

Pd/YZ-Al2O3 （Y and Zr modified Al2O3, and hereafter, labelled as A1） catalysts with 4 wt% additive CeO2 and/or La2O3 were prepared and characterized by X-ray photoelectron spectroscopy （XPS）, NO-temperature programmed desorption （NO-TPD）, Nz-adsorption/desorption （Branauer-Emmet-Teller BET method）, X-ray diffraction （XRD） and CO-chemisorption. Catalytic activities for CH4, CO and NO conversion were tested in a gas mixture simulated the emissions from natural gas vehicles （NGVs） operated under stoichiometric conditions. The results indicated that all catalysts exhibited excellent catalytic performances for CH4 and CO oxidation and the promoting effect of CeO2 or La2O3 was significant for NO conversion. XPS results showed that the electron density around Pd was increased by CeO2 and/or La2O3, the binding energy of Pd 3d decreased as the order： Pd/Al 〉 Pd/Ce/Al 〉 Pd/La/Al 〉 Pd/CeLa/Al. The electron-rich Pd showed Rh-like catalytic properties which exhibited good activity for the reduction of NO. NO-TPD results showed that the addition of CeO2 and/or La2O3 increased NO adsorption on surface, and promoted the conversion of NO.

关键词： NGVs under stoichiometric condition palladium catalyst XPS NO-TPD NO conversion methane conversion

Activator-induced tuning of micromorphology and electrochemical properties in biomass carbonaceous materials derived from mushroom for lithium-sulfur batteries

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Activator-induced tuning of micromorphology and electrochemi...

Rational design of multidimensional N-doped porous carbon/MoS2/CNTs nano-architecture hybrid for high performance lithium-sulfur batteries

2017年锂硫电池前沿学术研讨会

作者： Huali Wu Yunlong Deng Jirong Mou Qiaoji Zheng Fengyu Xie enyan long Chenggang Xu Dunmin Lin College of Chemistry and Materials Science Sichuan Normal University

The micromorphology characteristics of carbon host materials play an important role in stabilizing the structure and restricting the polysulphides in lithium-sulfur *** our work,four kinds of biomass carbon materials derived from mushroom have been synthesized by a facile activation method using H3PO4,K2CO3,KOH and ZnCl as activators and the correlation between micromorphology

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Rational design of multidimensional N-doped porous carbon/Mo...

Zr基载体负载Pd催化剂用于贫燃天然气汽车尾气净化

中国化学会第三届中国能源材料化学研讨会

作者： Juan Ren Yibei Zhou Li Xia Qiaoji Zheng Jie Liao enyan long Fengyu Xie Chenggang Xu Dunmin Lin College of Chemistry and Materials science Sichuan Normal University

Exploring a stable and high-efficiency sulfur cathode with strong polarity and robust porous conductive framework is a critical challenge to develop advanced lithium-sulfur(Li-S) ***,a multidimensional N-doped porous carbon/MoS/CNTs(FSC/MoS/CNTs) nano-architecture hybrid is rationally designed and successfully fabricated by the facile pyrolysis and hydrothermal *** the nano-architecture composite,

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催化学报 2010年第3期31卷 313-316页

作者：龙恩艳王云张晓玉李移乐龚茂初陈耀强四川大学化学学院绿色化学与技术教育部重点实验室四川成都610064

采用共沉淀法制备了ZrO2,Y0.1Zr0.9Ox,Ce0.1Zr0.9Ox和Al0.1Zr0.9Ox系列Zr基载体,并用N2吸附-脱附和X射线衍射对其进行了表征.再以此为载体,采用浸渍法制备了整体式负载Pd催化剂,催化剂涂层的涂覆量为180g/L左右,Pd含量为1.25%.测定了催... 详细信息

采用共沉淀法制备了ZrO2,Y0.1Zr0.9Ox,Ce0.1Zr0.9Ox和Al0.1Zr0.9Ox系列Zr基载体,并用N2吸附-脱附和X射线衍射对其进行了表征.再以此为载体,采用浸渍法制备了整体式负载Pd催化剂,催化剂涂层的涂覆量为180g/L左右,Pd含量为1.25%.测定了催化剂上Pd的分散度.在模拟的贫燃天然气汽车尾气中考察了催化剂的活性,并在尾气中有或无SO2存在的条件下比较了催化剂活性的差异.结果表明,Y3+,Ce4+或Al3+改性载体负载的Pd催化剂的耐硫性能明显改善;无论尾气中是否存在SO2,以Y3+或Al3+改性载体负载的Pd催化剂的活性均明显高于ZrO2负载体的Pd催化剂.

关键词：钯氧化锆负载型催化剂贫燃天然气甲烷转化硫中毒

载体焙烧温度对稀燃天然气汽车尾气净化Pd/Zr_(0.5)Al_(0.5)O_(1.75)催化剂性能的影响

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催化学报 2011年第2期32卷 303-308页

作者：王云唐石云龙恩艳林之恩龚茂初陈耀强四川大学化学学院绿色化学与技术教育部重点实验室四川成都610064

以不同温度焙烧得到的Zr0.5Al0.5O1.75复合氧化物为载体,制备了系列1.5%Pd/Zr0.5Al0.5O1.75催化剂样品.采用N2吸附-脱附、X射线衍射、H2程序升温还原、O2程序升温脱附及CO化学吸附等手段对催化剂进行了表征,并测试了催化剂在模拟稀燃天... 详细信息

以不同温度焙烧得到的Zr0.5Al0.5O1.75复合氧化物为载体,制备了系列1.5%Pd/Zr0.5Al0.5O1.75催化剂样品.采用N2吸附-脱附、X射线衍射、H2程序升温还原、O2程序升温脱附及CO化学吸附等手段对催化剂进行了表征,并测试了催化剂在模拟稀燃天然气汽车尾气中的活性和抗H2O中毒性能.结果表明,载体焙烧温度对催化剂活性的影响很大,其中以950°C焙烧时催化剂的活性最高.在不含H2O条件下,该催化剂对甲烷的起燃温度(T50)和完全转化温度(T90)分别为274和315°C;而在含H2O条件下的T50和T90分别为325和356°C,表现出较高的低温活性和优良的抗H2O中毒能力.

关键词：锆铝复合氧化物钯负载型催化剂稀燃天然气汽车

The complex effects of miR-146a in the pathogenesis of Alzheimer's disease

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Neural Regeneration Research 2025年第5期20卷 1309-1323页

作者： Yunfan long Jiajia Liu Yu Wang Haidong Guo Guohong Cui Department of Neurology Shanghai No.9 People’s HospitalShanghai Jiaotong University School of MedicineShanghaiChina Academy of Integrative Medicine Shanghai University of Traditional Chinese MedicineShanghaiChina School of Integrative Medicine Shanghai University of Traditional Chinese MedicineShanghaiChina Department of Neurology Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghaiChina

Alzheimer's disease is a neurodegenerative disorder characterized by cognitive dysfunction and behavioral *** plaques formed through the extracellular deposition of amyloid-βproteins,as well as neurofibrillary tangles formed by the intracellular deposition of hyperphosphorylated tau proteins,comprise two typical pathological features of Alzheimer's *** symptomatic treatment,there are no effective therapies for delaying Alzheimer's disease ***(miR)are small,non-coding RNAs that negatively regulate gene expression at the transcriptional and translational levels and play important roles in multiple physiological and pathological ***,miR-146a,a NF-κB-regulated gene,has been extensively implicated in the development of Alzheimer's disease through several *** has demonstrated substantial dysregulation of miR-146a both during the initial phases and throughout the progression of this *** R-146a is believed to reduce amyloid-βdeposition and tau protein hyperphosphorylation through the TLR/IRAK1/TRAF6 pathway;however,there is also evidence supporting that it can promote these processes through many other pathways,thus exacerbating the pathological manifestations of Alzheimer's *** has been widely reported that miR-146a mediates synaptic dysfunction,mitochondrial dysfunction,and neuronal death by targeting m RNAs encoding synapticrelated proteins,mitochondrial-related proteins,and membrane proteins,as well as other *** the impact on glial cells,miR-146a also exhibits differential *** one hand,it causes widespread and sustained inflammation through certain pathways,while on the other hand,it can reverse the polarization of astrocytes and microglia,alleviate neuroinflammation,and promote oligodendrocyte progenitor cell differentiation,thus maintaining the normal function of the myelin sheath and exerting a protective effect on *** this review,we provide a

关键词： Alzheimer's disease amyloid-β glial cells microRNAs miR-146a neuroinflammatory

Recent advances of metal vacancies in energy and environmental catalysis:Synthesis,characterization,and roles

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Green Energy & Environment 2025年第1期10卷 84-108页

作者： long Sun Shunzheng Zhao Sirui Gao Ronghui Zhu Yiran Tan Xiaolong Tang Honghong Yi School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing100083China Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants Beijing100083China

With the ongoing depletion of fossil fuels,energy and environmental issues have become increasingly critical,necessitating the search for effective ***,being one of the hallmarks of modern industry,offers a promising avenue for ***,the question of how to significantly enhance the performance of catalysts has gradually drawn the attention of *** engineering,a commonly employed and effective approach to improve catalyst activity,has become a significant research focus in the catalysis field in recent *** vacancies have received extensive attention due to their simple ***,exploration of metal vacancies has remained stagnant for a considerable period,resulting in a scarcity of comprehensive reviews on this ***,based on the latest research findings,this paper summarizes and consolidates the construction strategies for metal vacancies,characterization techniques,and their roles in typical energy and environmental catalytic ***,it outlines potential challenges in the future,aiming to provide valuable references for researchers interested in investigating metal vacancies.

关键词： Metal vacancies Catalysis Construction strategies Characterization techniques Roles

Tangled but ordered human mitochondrial tRNA maturation

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Science China Life Sciences 2025年

作者： Shi-Ying Yao Xiao-long Zhou Key Laboratory of RNA Innovation Science and Engineering CAS Center for Excellence in Molecular Cell Science Shanghai Institute of Biochemistry and Cell Biology Chinese Academy of Sciences University of Chinese Academy of Sciences Key Laboratory of Systems Health Science of Zhejiang Province School of Life Science Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences

Mitochondria are cellular organelles that originate from an endosymbiotic bacterial ancestor and are primarily responsible for ATP generation via oxidative phosphorylation (OXPHOS). OXPHOS is conducted by five mitochondrial respiratory complexes in the inner mitochondrial membrane. Human mitochondria possess a distinct genome, a small, circular, doublestranded DNA (mtDNA) of 16,569 base pairs.

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