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Approach for C_(1)to C_(2)products commencing from carbon dioxide:A brief review

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Petroleum 2024年第3期10卷 373-398页

作者： G.R.Dey Radiation and Photochemistry division Bhabha Atomic Research CentreTrombayMumbai 400085India Homi Bhabha National Institute AnushaktinagarMumbai 400094India

The carbon dioxide(CO_(2))conversion to useable compounds remains a great contest to scientists,engineers,and environmentalists with regard to the reverse of the oxidative degradation of *** conversion is essential for the development of complementary fuels and raw materials for various industries,which in turn will help in avoiding the drastic increase in tropospheric temperature due to greenhouse effect leading to global *** solar energy is the earth's essential power source along with the other various forms of energy for example fossil fuels,hydropower,wind,and biomaterials,*** final goal is to establish the artificial photosynthesis,which can be replicated thru various chemical reduction techniques of CO_(2)by employing appropriate photo-,thermal-and electro-catalysts in order to produce different one carbon atom(C_(1))and higher carbon atoms containing ***,the utilization of clean and sustainable CO_(2)towards high-value products is of great interest today due to the recognized environmental worries and subsequent lessening of the fossil fuels utilization load to meet the energy demand of *** way,solar energy can directly and/or indirectly be altered and stored in chemical energy form for industrial as well as societal *** this article our endeavor is to summarize the advances in CO_(2)chemical reduction research area till date especially in free radical-based methods such as electrochemical,photochemical and plasma chemical for the development of carbon species up to two carbon(C_(2))atoms containing products perceived in the chemical reduction of CO_(2).The author hopes that this piece of work will be helpful to researchers and readers who are focused on the field of CO_(2).

关键词： Photocatalysis Electrocatalysis Plasmolysis Thermolysis carbon dioxide Chemical reduction

Designing ABC-6 family small pore zeolites by epitaxial growth approach

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Chinese Chemical Letters 2024年第3期35卷 508-512页

作者： Xiaohui Cui Jia Lv Chao Ma Yujiao Wang Zhenghao Jia Daliang Zhang Peng Guo Zhongmin Liu Henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou 450001China National Engineering research Center of Lower-carbon Catalysis Technology Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Multi-scale Porous Materials Center Institute of Advanced Interdisciplinary Studies&School of Chemistry EngineeringChongqing UniversityChongqing 400044China University of Chinese Academy of Sciences Beijing 100049China division of Energy research Resources Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China

Aluminosilicate small pore zeolites belonging to ABC-6 family play crucially important roles in the high methanol conversion with the high selectivity of light olefins,gas separation and storage,and selective catalytic reduction of NO_(x).In this work,we report a general method,called the epitaxial growth approach,for designing ABC-6 family small pore *** is mainly realized through the epitaxial growth on the nonporous SOD-type zeolite in the presence of inorganic cations(Na^(+)and K^(+))combined with a variety of organic structure directing agents(OSDAs).In this case,a series of ABC-6 family small pore zeolites such as ERI-,SWY-,LEV-,AFX-,and PTT-type zeolites have been successfully synthesized within a few *** importantly,the advanced focused ion beam(FIB)and the low-dose high-resolution transmission electron microscopy(HRTEM)imaging technique have been utilized for unraveling the zeolite heterojunction at the atomic level during the epitaxial growth *** turns out(222)crystallographic planes of the SOD-type zeolite substrate provide unique pre-building units,which facilitate the growth of targeted ABC-6 family small pore zeolites along its ***,the morphologies of ERI-type zeolite can also be tuned through the epitaxial growth approach,achieving a longer lifetime in the methanol conversion.

关键词： Zeolite structure Zeolite synthesis Structural characterizations Low-dose imaging Focused ion beam

Practical operating flexibility of a bifunctional freestanding membrane for efficient anion exchange membrane water electrolysis across all current ranges

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carbon Energy 2024年第9期6卷 306-324页

作者： Hong-Jin Son Jeemin Hwang Min Young Choi Seung Hee Park Jae Hyuk Jang Byungchan Han Sung Hoon Ahn Department of Bio-Chemical Engineering Chosun UniversityGwangjuRepublic of Korea Fuel Cell research and Demonstration Center Hydrogen Energy Research DivisionKorea Institute of Energy Research(KIER)Buan-gunJeollabuk-doRepublic of Korea Department of Chemical and Biomolecular Engineering Yonsei UniversitySeoulRepublic of Korea Center for research Equipment Korea Basic Science InstituteDaejeonRepublic of Korea

This study explores a symmetric configuration approach in anion exchange membrane(AEM)water electrolysis,focusing on overcoming adaptability challenges in dynamic ***,a rapid and mild synthesis technique for fabricating fibrous membrane-type catalyst electrodes is *** method leverages the contrasting oxidation states between the sulfur-doped NiFe(OH)2 shell and the metallic Ni core,as revealed by electron energy loss *** evaluations confirm that the S–NiFe(OH)_(2) active sites optimize free energy for alkaline water electrolysis *** technique bypasses traditional energy-intensive processes,achieving superior bifunctional activity beyond current *** symmetric AEM water electrolyzer demonstrates a current density of 2 A cm^(-2) at 1.78 V at 60℃ in 1 M KOH electrolyte and also sustains ampere-scale water electrolysis below 2.0 V for 140 h even in ambient *** results highlight the system's operational flexibility and structural stability,marking a significant advance-ment in AEM water electrolysis technology.

关键词： AEM water electrolysis fibrous membrane iR correction free operational stability symmetric configuration

Analysis of per-and polyfluoroalkyl substances(PFAS)extraction from contaminated firefighting materials:Effects of cleaning agent,temperature,and chain-length dependencies

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Emerging Contaminants 2024年第3期10卷 268-279页

作者： Sixten Dahlbom Fanny Bjarnemark Bjorn Nguyen Sarunas Petronis Tove Mallin RISE research Institute of Sweden Division Safety and TransportFire and Safety DepartmentBox 85750115BoråsSweden RISE research Institute of Sweden Division Materials and ProductionChemistry and Applied Mechanics DepartmentBox 85750115BoråsSweden RISE research Institute of Sweden Division Materials and ProductionMethodologyTextiles and Medical Technology DepartmentBox 85750115BoråsSweden

This investigation delves into the extraction dynamics of 22 per-and polyfluoroalkyl substances from PFAS contaminated firefighting *** distinct test sets were executed:one contrasting a commercial product with water following an elaborate decontamination procedure,and the other assessing seven washing agents on materials from firefighting installations,with one agent examined at 22℃and 50℃.A general tendency for improved desorption at the higher temperature was ***,a discernible influence of the cleaning agent's pH on the extraction of specific PFAS species was observed,elucidating the role of chemical environment in the extraction *** rebound was studied for a period of up to 157 days,this unveiled a gradual escalation in PFAS22 levels,indicative of a protracted desorption ***,PFAS with abbreviated carbon chains(C4-C6)exhibit superior desorption efficiency compared to their elongated congeners,suggesting a chain-lengthdependent decontamination potential.A comparative scrutiny between a commercially available cleaning product,featuring multiple washing and flushing steps,and a water-only treatment regimen underscores the potential efficacy of the *** exhaustive investigation furnishes nuanced insights into PFAS extraction complexities,offering a foundation for informed decontamination strategies.

关键词： PFAS Decontamination Firefighting foam Firefighting materials Cleaning

Higher Grain-Filling Rate in Inferior Spikelets of Tolerant Rice Genotype Offset Grain Yield Loss under Post-Anthesis High Night Temperatures

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Rice science 2024年第5期31卷 572-586,I0059-I0061页

作者： Nitin SHARMA Bhupinder SINGH Subbaiyan Gopala KRISHNAN Haritha BOLLINEDI Pranab Kumar MANDAL Milan Kumar LAL Prakash Kumar JHA P.V.Vara PRASAD Anjali ANAND division of Plant Physiology Indian Council of Agricultural Research(ICAR)-Indian Agricultural Research Institute(IARI)New Delhi 110012India division of Environment Science ICAR-IARINew Delhi 110012India division of Genetics ICAR-IARINew Delhi 110012India ICAR-National Institute for Plant Biotechnology New Delhi 110012India division of Crop Physiology and Biochemistry ICAR-National Rice Research InstituteCuttack 753006India Department of Plant and Soil Sciences Mississippi State UniversityStarkvilleMS 39762USA Feed the Future Innovation Lab for Collaborative research on Sustainable Intensification Kansas State UniversityManhattanKS 66506USA Department of Agronomy Kansas State UniversityManhattanKS 66506USA

Increased nighttime respiratory losses decrease the amount of photoassimilates available for plant growth and yield. We hypothesized that the increased respiratory carbon loss under high night temperatures(HNT) could be compensated for by increased photosynthesis during the day following HNT exposure. Two rice genotypes, Vandana(HNT-sensitive) and Nagina 22(HNT-tolerant), were exposed to HNT(4 ℃ above the control) from flowering to physiological maturity. They were assessed for alterations in the carbon balance of the source(flag leaf) and its subsequent impact on grain filling dynamics and the quality of spatially differentiated sinks(superior and inferior spikelets). Both genotypes exhibited significantly higher night respiration rates. However, only Nagina 22 compensated for the high respiration rates with an increased photosynthetic rate, resulting in a steady production of total dry matter under HNT. Nagina 22 also recorded a higher grain-filling rate, particularly at 5 and 10 d after flowering, with 1.5- and 4.0-fold increases in the translocation of ^(14)C sugars to the superior and inferior spikelets, respectively. The ratio of photosynthetic rate to respiratory rate on a leaf area basis was negatively correlated with spikelet sterility, resulting in a higher filled spikelet number and grain weight per plant, particularly for inferior grains in Nagina 22. Grain quality parameters such as head rice recovery, high-density grains, and gelatinization temperature were maintained in Nagina 22. An increase in the rheological properties of rice flour starch in Nagina 22 under HNT indicated the stability of starch and its ability to reorganize during the cooling process of product formation. Thus, our study showed that sink adjustments between superior and inferior spikelets favored the growth of inferior spikelets, which helped to offset the reduction in grain weight under HNT in the tolerant genotype Nagina 22.

关键词： high night temperature inferior grain pasting property radiolabeled sugar superior grain

Cobalt-based heterogeneous catalysts for photocatalytic carbon dioxide reduction

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Tungsten 2024年第2期6卷 410-421页

作者： Hong Yuan Jian-Hua Mei Yun-Nan Gong Di-Chang Zhong Tong-Bu Lu MOE International Joint Laboratory of Materials Microstructure Institute for New Energy Materials and Low Carbon TechnologiesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China

Solar light-driven CO_(2)reduction to high value-added chemicals has considered as an outstanding way to solve energy crisis and climate ***,various photocatalysts have been developed to achieve this *** them,cobaltbased heterogeneous catalysts have attracted great interest because of their promising performance,product selectivity and ***,we systematically summarize the research progress of various cobalt-based heterogeneous catalysts for the photoreduction of CO_(2),such as single-atom cobalt,and cobalt-based oxides,nitrides,sulfi des,phosphides,metal-organic frameworks and covalent-organic ***,the advantages and structure-activity relationship of these catalysts in photocatalytic CO_(2)reduction reaction are ***,the challenges and prospects for constructing cobaltbased heterogeneous catalysts with high effi ciency are highlighted.

关键词： Cobalt Heterogeneous catalysts CO_(2)reduction Photocatalysis

Effect of rotating gliding discharges on the lean blow-off limit of biogas flames

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Plasma Science and Technology 2024年第10期26卷 116-122页

作者： Muhammad Saqib AKHTAR Mhedine ALICHERIF Bing WANG Deanna A.LACOSTE School of Aerospace Engineering Tsinghua UniversityBeijing 10084People’s Republic of China King Abdullah University of Science and Technology Physical Science and Engineering DivisionClean Combustion Research CenterThuwal 23955-6900Saudi Arabia

This study investigates the effect of a rotating gliding discharge on synthetic biogas combustion at atmospheric *** biogas was produced by mixing methane and carbon *** mixtures were considered:100%/0%,70%/30%,and 50%/50%of methane and carbon dioxide,*** plasma effect was investigated in a low-swirl-number burner equipped with a high-voltage electrode to produce gliding *** effect of plasma on the stability limits of the flame is reported for several electrical *** plasma-assisted combustion,the lean blow-off limits of biogas-air flames were significantly improved,which agrees with what can be found in the literature for other *** electrical parameters of the discharge and the plasma emissions were measured using electric probes and emission spectroscopy,*** mixture with the CO_(2)dilution was associated with a higher reduced electric field and higher ion production.A better understanding of the excited-species concentration evolution during plasma is necessary and will be investigated in future work.

关键词： plasma-assisted combustion non-equilibrium plasma methane carbon dioxide

Effect of electrolyte cation-mediated mechanism on electrocatalytic carbon dioxide reduction

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Chinese Chemical Letters 2024年第7期35卷 139-146页

作者： Yuan Dong Mutian Ma Zhenyang Jiao Sheng Han Likun Xiong Zhao Deng Yang Peng Soochow Institute of Energy and Material Innovations College of EnergyJiangsu Key Laboratory of Advanced Carbon Materials and Wearable Energy TechnologiesSoochow UniversitySoochow 215006China Jiangsu Key Laboratory of Advanced Negative carbon Technologies Soochow UniversitySoochow 215123China School of Chemistry and Chemical Engineering Shihezi UniversityShihezi 832003China School of Chemical and Environmental Engineering Shanghai Institute of TechnologyShanghai 201418China

The steep reduction in costs and systematic optimization of renewable electricity has ignited an intensifying interest in harnessing electroreduction of carbon dioxide(CO_(2)RR)for the generation of chemicals and *** focus of research over the past few decades has been on the optimization of the electrode and the electrolyte ***,cation species in the latter have recently been found to dramatically alter the selectivity of CO_(2)RR and even their catalytic activity by multiple orders of *** a result,the selection of cations is a critical factor in designing catalytic interfaces with high selectivity and efficiency for targeted *** decision-making regarding cation selection relies on a comprehensive understanding of prevailing electrolyte effect models that have been used to elucidate observed experimental *** this perspective,we review the hypotheses that explain how electrolyte cations influence CO_(2)RR by mechanisms such as through tuning of the interfacial electric field,buffering of the local pH,stabilization of the key intermediates and regulation of the interfacial *** endeavor is to elucidate the molecular mechanisms underpinning cation effects,thus fostering the evolution of more holistic and universally applicable predictive *** this regard,we highlight the current challenges in this area of research,while also identifying potential avenues for future investigations.

关键词： CO_(2)electrocatalytic reduction Cation effects Catalytic mechanisms Catalytic interfaces Electric double layer

Bisulfite-mediated base-free decarboxylative carbonylsulfination of alkenes:access to β-keto sultines

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Science China Chemistry 2024年

作者： Yongxin Zhang Pan Zhou Xinyue Ma Xiaoxiao Yang Xing Fang Yuxi Wang Chao Shu State Key Laboratory of Green Pesticide Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction CCNU-uOttawa Joint Research Centre College of Chemistry Central China Normal University (CCNU) Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Normal University

A straightforward three-component decarboxylative cross-coupling of α-keto acids, alkenes and sodium bisulfite is established for the construction of otherwise challenging-to-access β-keto sultine derivatives. This reaction involves the photoinduced carbonylsulfination of alkenes and utilizes sodium bisulfite as both a sulfur dioxide surrogate and buffer agent for deprotonation of α-keto carboxylic acids. Of note, the practical procedure featured broad substrate scope and group tolerance for diverse biologically important molecules under mild and operationally simple conditions, using an organic photocatalyst. Mechanistic studies indicated that the transformation proceeds an apparent two-pronged radical addition/radical-polar crossover/SO2insertion/ionic cyclization relay process, distinct from traditional alkenes bifunctionalization.

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