检索结果-南通市图书馆

Absorption mechanism of SO_(3)on various alkaline absorbents in the presence of SO_(2)

Journal of Environmental Sciences 2025年第3期149卷 268-277页

作者： Junxiang Guo Jin Xiong Yuran Li Jirigele Qinggele Tingyu Zhu Shougang Group Research Institute of Technology Beijing 100043China Beijing key laboratory of green Recyclable process for Iron&Steel Production Technology Beijing 100043China cas key laboratory of green process and engineering Institute of Process EngineeringInnovation Academy for Green ManufactureChinese Academy of SciencesBeijing 100190China WISDRI City Environment Protection engineering Limited Company Wuhan 430205China

Sulfur trioxide(SO_(3))as a condensable particle matter has a significant influence on atmospheric visibility,which easily arouses formation of *** is imperative to control the SO_(3)emission from the industrial flue *** commonly used basic absorbents,including Ca(OH)_(2),MgO and NaHCO_(3)were selected to explore the effects of temperature,SO_(2)concentration on the SO_(3)absorption,and the reaction mechanism of SO_(3)absorption was further *** suitable reaction temperature for various absorbents were proposed,Ca(OH)_(2)at the high temperatures above 500°C,MgO at the low temperatures below 320°C,and NaHCO_(3)at the temperature range of 320–500°*** competitive absorption between SO_(2)and SO_(3)was found that the addition of SO_(2)reduced the SO_(3)absorption on Ca(OH)_(2)and NaHCO_(3),while had no effect on *** order of the absorption selectivity of SO_(3)follows MgO,NaHCO_(3)and Ca(OH)_(2)under the given conditions in this *** absorption process of SO_(3)on NaHCO_(3)follows the shrinking core model,thus the absorption reaction continues until NaHCO_(3)was exhausted with the utilization rate of nearly 100%.The absorption process of SO_(3)on Ca(OH)_(2)and MgO follows the grain model,and the dense product layer hinders the further absorption reaction,resulting in low utilization of about 50%for Ca(OH)_(2)and *** research provides a favorable support for the selection of alkaline absorbent for SO_(3)removal in application.

关键词： Alkali absorbent Sulfur trioxide Selectivity Shrinking core model Grain model

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Adsorption removal of mercury from flue gas by metal selenide:A review

引用

Journal of Environmental Sciences 2025年第2期148卷 420-436页

作者： Yang Zheng Guoliang Li Yi Xing Wenqing Xu Tao Yue School of Energy and Environmental engineering University of Science and Technology BeijingBeijing 100083China State key laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China cas key laboratory of green process and engineering Institute of Process EngineeringInnovation Academy for Green ManufactureChinese Academy of SciencesBeijing 100190China

Mercury(Hg)pollution has been a global concern in recent decades,posing a significant threat to entire ecosystems and human health due to its cumulative toxicity,persistence,and transport in the *** intense interaction between mercury and selenium has opened up a new field for studying mercury removal from industrial flue gas *** the advantages of good Hg0 capture performance and lowsecondary pollution of the mineral selenium compounds,the most noteworthy is the relatively low regeneration temperature,allowing adsorbent regeneration with low energy consumption,thus reducing the utilization cost and enabling recovery of mercury *** paper reviews the recent progress of mineral selenium compounds in flue gas mercury removal,introduces in detail the different types ofmineral selenium compounds studied in the field ofmercury removal,reviews the adsorption performance of various mineral selenium compounds adsorbents on mercury and the influence of flue gas components,such as reaction temperature,air velocity,and other factors,and summarizes the adsorption mechanism of different fugitive forms of selenium *** on the current research progress,future studies should focus on the economic performance and the performance of different carriers and sizes of adsorbents for the removal of Hg0 and the correlation between the gas-particle flow characteristics and gas phase mass transfer with the performance of Hg0 removal in practical industrial *** addition,it remains a challenge to distinguish the oxidation and adsorption of Hg0 quantitatively.

关键词： Non-conventional pollutants Adsorbents Metal selenides Flue gas Mercury removal

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Density functional theory studies of Pt-based catalysts for CO oxidation

引用

Science China Technological Sciences 2025年第3期68卷 58-75页

作者： Xue LI Yang ZOU Yongqi ZHAO Xiaolong LIU Tingyu ZHU cas key laboratory of green process and engineering Institute of Process Engineering Chinese Academy of Sciences key laboratory of green and High-value Utilization of Salt Lake Resources Chinese Academy of Sciences

CO is highly toxic and seriously harmful to human health, so it is meaningful to control CO emissions, especially from industrial plants. Catalytic oxidation is regarded to be an effective method for CO removal, in which Pt-based catalysts show excellent performance. Studies of catalytic CO oxidation employing Pt-based catalysts often encounter challenges such as CO poisoning, challenges in activating O2, significant temperature sensitivity, and inadequate tolerance to water and sulfur species. These experimental hurdles have been corroborated by density functional theory（DFT） computations, which model adsorption, reaction pathways, and electronic structures at catalyst surfaces. DFT analysis has elucidated the underlying mechanisms behind these limitations, laying the foundation for enhancing the efficacy of Pt-based catalysts within the scope of academic discourse. DFT has been used intensively in recent years to study the reaction mechanism and functioning characteristics of Pt-based catalysts in CO oxidation. Consequently, advancements in research on DFT experiments on Pt-based catalysts are described. This review provides a comprehensive overview and insights into the mechanism of CO adsorption on the surface of single-atom and multi-atom Pt-based catalysts, its effect on CO oxidation performance, and reaction pathways of CO oxidation in the hope of providing theoretical guidance for the structural design of most effective catalysts.

关键词： platinum catalytic oxidation carbon monoxide density functional theory

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Overview of in-situ oxygen production technologies for lunar resources

引用

International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 233-255页

作者： Youpeng Xu Sheng Pang Liangwei Cong Guoyu Qian Dong Wang Laishi Li Yusheng Wu Zhi Wang College of Materials Science and engineering Shenyang University of TechnologyShenyang 110870China cas key laboratory of green process and engineering National Engineering Research Center for Green Recycling of Strategic Metal ResourcesInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China Innovation Academy for green Manufacture Chinese Academy of SciencesBeijing 100190China School of Chemical engineering University of Chinese Academy of SciencesBeijing 100049China

The rich resources and unique environment of the Moon make it an ideal location for human expansion and the utilization of extraterrestrial ***,crucial for supporting human life on the Moon,can be extracted from lunar regolith,which is highly rich in oxygen and contains polymetallic *** oxygen and metal extraction can be achieved using existing metallurgical ***,the ample reserves of water ice on the Moon offer another means for oxygen *** paper offers a detailed overview of the leading technologies for achieving oxygen production on the Moon,drawing from an analysis of lunar resources and environmental *** delves into the principles,processes,advantages,and drawbacks of water-ice electrolysis,two-step oxygen production from lunar regolith,and one-step oxygen production from lunar *** two-step methods involve hydrogen reduction,carbothermal reduction,and hydrometallurgy,while the one-step methods encompass fluorination/chlorination,high-temperature decomposition,molten salt electrolysis,and molten regolith electrolysis(MOE).Following a thorough comparison of raw materials,equipment,technology,and economic viability,MOE is identified as the most promising approach for future in-situ oxygen production on the *** the corrosion characteristics of molten lunar regolith at high temperatures,along with the Moon's low-gravity environment,the development of inexpensive and stable inert anodes and electrolysis devices that can easily collect oxygen is critical for promoting MOE technology on the *** review significantly contributes to our understanding of in-situ oxygen production technologies on the Moon and supports upcoming lunar exploration initiatives.

关键词： lunar resources in-situ oxygen production space metallurgy molten lunar regolith electrolysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Pilot-scale testing on catalytic hydrolysis of carbonyl sulfur combined with absorption-oxidation of H_(2)S for blast furnace gas purification

引用

Journal of Environmental Sciences 2025年第5期151卷 360-372页

作者： Yuting Lin Yuran Li Bin Wang Jinglei Tian Hongqiang Liu Yiren Li Zhicheng Xu Qiang Cao Tingyu Zhu cas key laboratory of green process and engineering Institute of Process EngineeringInnovation Academy for Green ManufactureChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100190China HBIS Group Co. Ltd.Shijiazhuang 050023China Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China

About 70%of the flue gas in the iron-steel industry has achieved multi-pollutant ultra-low emissions in China until 2023,and then the blast furnace gas purification has become the control step and *** research group has designed and constructed the world’s first blast furnace gas desulfurization pilot plant with the scale of 2000 Nm^(3)/h in October *** pilot plant is a two-step combined desulfurization device including catalytic hydrolysis of carbonyl sulfur(COS)and absorption-oxidation of H_(2)S,continuously running for 120 *** the hydrolysis system,one reason for catalyst deactivation has been verified from the sulfur *** in blast furnace gas can be hydrolyzed on the hydrolysis catalyst to produce the nitrogen deposition,which is one of the reasons for catalyst deactivation and has never been found in previous *** deposition forms of S and N elements are determined,S element forms elemental sulfur and sulfate,while N element forms-NH_(2)and NH_(4)^(+).In the absorption-oxidation system,the O_(2)loading and the residence time have been optimized to control the oxidation of HS^(−)to produce elemental sulfur instead of by-product S_(2)O_(3)^(2−).The balance and distribution of S and N elements have been calculated for thewholemulti-phase system,approximately 84.4%of the sulfur is converted to solid sulfur product,about 1.3%of the sulfur and 19.2%of N element are deposited on the hydrolysis *** pilot plant provides technical support formulti-pollutant control of blast furnace.

关键词： Blast furnace gas Carbonyl sulfur Hydrogen sulfide Hydrogen cyanide Hydrolysis and oxidation Activated carbon

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Construction of Ni single-atom coordinated with doped N and S elements for mild hydrogenation of methyl acrylate to methyl propionate

引用

Nano Research 2025年第1期18卷 217-224页

作者： Taolue Sun Chen Jian Gang Wang Hui Zhao Guoliang Zhang Zengxi Li Chunshan Li State key laboratory of Mesoscience and engineering CAS Key Laboratory of Green Process and EngineeringBeijing Key Laboratory of Ionic Liquids Clean ProcessInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Chemical engineering University of Chinese Academy of SciencesBeijing 100049China Huizhou Institute of green Energy and Advanced Materials Huizhou 516081China Advanced Energy Science and Technology Guangdong laboratory Huizhou 516081China

Although the nickel-based catalyst is able toexhibit comparative catalytic activity to noble metal formethyl acrylate hydrogenation,it requires strict reactioncondition,which can be improved by regulation ofcoordination *** this study,we constructed akind of Ni single-atom coordinated with N and S(Ni-NSC)through the pyrolysis of organic Ni-based precursors at600℃.The existence and fine structure of Ni single-atom were confirmed by the spherical electron microscopicobservation in combination with the X-ray absorption spectroscopy(XAS)*** addition,the catalytichydrogenation assessment suggested that the as-prepared Ni-NSC catalyst exhibited higher activity and stability than theNi/NSC supported catalyst prepared by incipient wetness impregnation *** remarkable catalytic activity was dueto the high dispersion and density of Ni single-atom and weak adsorption energy of intermediates on these Ni sites.

关键词： methyl acrylate mild hydrogenation Ni single-atom coordination environment adsorption energy

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Interfacial B-O bonding modulated S-scheme B-doped N-deficient C_(3)N_(4)/O-doped-C_(3)N_(5) for efficient photocatalytic overall water splitting

引用

Chinese Chemical Letters 2025年第1期36卷 355-361页

作者： Entian Cui Yulian Lu Zhaoxia Li Zhilei Chen Chengyan Ge Jizhou Jiang key laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of TechnologyYancheng 224051China School of Environmental Ecology and Biological engineering Key Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationWuhan Institute of TechnologyWuhan 430205China

Photocatalytic overall pure water splitting is a promising method for generating green hydrogen energy under mild ***,this process is often hindered by sluggish electron-hole separation and *** address this,a step-scheme(S-scheme)B-doped N-deficient C_(3)N_(4)/O-doped C_(3)N_(5)(BN-C_(3)N_(4)/O-C_(3)N_(5))heterojunction with interfacial B-O bonds has been *** Pt and Co(OH)_(2) as co-catalysts,BN-C_(3)N_(4)/O-C_(3)N_(5) S-scheme heterojunction demonstrates significantly enhanced photocatalytic activity for overall pure water splitting under visible light,achieving H_(2) and O_(2) evolution rates of 40.12 and 19.62μmol/h,*** characterizations and experiments revealed the performance-enhancing effects of the enhanced built-in electric field and the interfacial B-O ***,the strengthened built-in electric field provides sufficient force for rapid interfacial electron ***,by reducing the transport energy barrier and transfer distance,the interfacial B-O bonds facilitate rapid recombination of electrons and holes with relatively low redox potential via the S-scheme charge-transfer route,leaving the high-potential electrons and holes available for H^(+)reduction and OH^(-)oxidation ***,the photocatalytic efficiency of BN-C_(3)N_(4)/O-C_(3)N_(5) S-scheme heterojunction was significantly improved,making it a promising approach for green hydrogen production through overall pure water splitting.

关键词： Interfacial B-O bonds BN-C_(3)N_(4) O-C_(3)N_(5) S-scheme heterojunction Water splitting

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Atomic cerium-doped CuO_(x) catalysts for efficient electrocatalytic CO_(2) reduction to CH_(4)

引用

Chinese Chemical Letters 2025年第1期36卷 326-331页

作者： Xiangyu Chen Aihao Xu Dong Wei Fang Huang Junjie Ma Huibing He Jing Xu Guangxi key laboratory of Petrochemical Resource processing and process Intensification Technology School of Chemistry and Chemical EngineeringGuangxi UniversityNanning 530004China State key laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures Guangxi UniversityNanning 530004China State key laboratory of green Chemical engineering and Industrial Catalysis School of Chemical EngineeringEast China University of Science and TechnologyShanghai 200237China

Copper(Cu)is widely used in the electrochemical carbon dioxide reduction reaction(ECO_(2)RR)for efficient methane(CH_(4))***,the morphology and valence of Cu-based catalysts are usually unstable under reaction *** this work,we prepared Ce-doped MOF-199 precursor(Ce/HKUST-1)and further obtained nanoparticle electrocatalyst Ce/CuO_(x)-NPs by cyclic voltammetry(CV)*** Faradic efficiency of methane(FE_(CH_(4)))maintains above 62%within a broad potential window of 350 mV and the maximum FE_(CH_(4))reaches 67.4%with a partial current density of 293 mA/cm^(2)at-1.6 V vs.a reversible hydrogen *** characterization and theoretical calculations revealed that the unique electronic structure and large ionic radius of Cerium(Ce)not only promoted the generation of key intermediate*CO but also lowered energy barrier of the*CO to*CHO *** study provides a novel and efficient catalyst for methane production in ECO_(2)RR and offers profound insights into constructing high performance Cu-based catalysts.

关键词： ECO_(2)RR Cu-based catalyst Structure evolution DFT calculation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Identifying the dynamic behaviors in complete reconstruction of Co-based complex precatalysts during electrocatalytic oxygen evolution

引用

Journal of Energy Chemistry 2025年第1期100卷 226-233页

作者： Jingfang Zhang Danyang Wu Linke Cai Youluan Lu Fanpeng Cheng Lijuan Shi Qun Yi Yao Liu Yi Huang key laboratory of green Chemical engineering process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationHubei Key Laboratory of Novel Reactor and Green Chemical TechnologySchool of Chemical Engineering&PharmacyWuhan Institute of TechnologyWuhan 430205HubeiChina key laboratory of Pesticide&Chemical Biology of Ministry of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of EducationCollege of ChemistryCentral China Normal UniversityWuhan 430079HubeiChina College of Materials Science and engineering Fuzhou UniversityFuzhou 350108FujianChina

Transition metal-based nanomaterials have emerged as promising electrocatalysts for oxygen evolution reaction(OER).Considerable research efforts have shown that self-reconstruction occurs on these nanomaterials under operating conditions of OER ***,most of them undergo incomplete reconstruction with limited thickness of reconstruction layer,leading to low component utilization and arduous exploration of real catalytic ***,we identify the dynamic behaviors in complete reconstruction of Co-based complexes during *** hollow phytic acid(PA)cross-linked CoFe-based complex nanoboxes with porous nanowalls are designed because of their good electrolyte penetration and mass transport ability,in favor of the fast and complete reconstruction.A series of experiment characterizations demonstrate that the reconstruction process includes the fast substitution of PA by OH-to form Co(Fe)(OH)xand subsequent potential-driven oxidation to Co(Fe)*** obtained CoFeOOH delivers a low overpotential of 290 mV at a current density of 10 mA cm^(-2)and a long-term *** experiment results together with theory calculations reveal that the Fe incorporation can result in the electron rearrangement of reconstructed CoFeOOH and optimization of their electronic structure,accounting for the enhanced OER *** work provides new insights into complete reconstruction of metal-based complexes during OER and offers guidelines for rational design of high-performance electrocatalysts.

关键词： Complete reconstruction Co-based complex Precatalysts Oxygen evolution reaction

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Enhancement of weathered crust elution-deposited rare earth ores leaching process with PQ-10 addition

引用

Journal of Rare Earths 2025年第1期43卷 180-190,I0007页

作者： Aoyang Sha Huifang Yang Zhengyan He Zhigao Xu Chenjie Wu Ming Wu Ru'an Chi key laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education Key Laboratory of Resources Conversion and Pollution Control of the State Ethnic Affairs Commission&Hubei Key Laboratory of Catalysis and Materials ScienceCollege of Resources and Environmental ScienceSouth-Central Minzu UniversityWuhan430074China key laboratory for green Chemical process of Ministry of Education School of Resources&Safety EngineeringWuhan Institute of TechnologyWuhan 430073China

To solve the problems of the long development period,low mass transfer efficiency and high impurity conte nt in the in-situ leaching process of weathe red crust elution-deposited rare earth ores(WCE-DREO),cationic hydroxyethyl cellulose(PQ-10)was composited with conventional leaching agent ammonium sulfate((NH_(4))_(2)SO_(4))to form a novel composite leaching *** effects of PQ-10 concentration,leaching temperature and leaching flow rate of the composite leaching agent on the leaching kinetics and mass transfer processes of rare earth(RE)and aluminum(Al)were *** to the single leaching agent(NH_(4))_(2)SO_(4),the composite leaching agent(2 wt%(NH_(4))_(2)SO_(4)+0.02 wt%PQ-10)can reduce the RE leaching equilibrium time from 465 to 130 min and increase the RE leaching efficiency and decrease the Al leaching *** also facilitates the leaching process of WCE-DREO by increasing the peak concentrations of RE and Al,reducing the theoretical tower plate height(HETP)and improving the leaching mass transfer *** is indicated that PQ-10 can promote the leaching of *** leaching process of the composite leaching system conforms to the diffusion kinetic control *** the PQ-10 concentration is in the range of 0.005 wt%-0.020 wt%,the reaction orders of RE and Al are 0.73 and 0.54,respectively,which shows a positive effect on the leaching velocity;when the PQ-10 concentration is in the range of 0.030 wt%-0.060 wt%,the reaction orders of RE and Al are-1.16 and-0.75,respectively,which show a negative effect on the leaching *** the range of 10-50℃,the apparent activation energies of RE and Al are 15.02 and 17.31 kJ/mol,respectively,and the higher the leaching temperature,the smaller the HETP and the higher the leaching velocity and mass transfer *** increase in leaching flow rate contributes to the increase in the longitudinal diffusion velocity of the leaching agent within WCE-DREO,causing a shorter time for RE

关键词： Cationic hydroxyethyl cellulose Weathered crust elution-deposited rare earthores Leaching Novel compositeagent

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：