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Bivariate attribution.of the compoun. hot an. dry summer of 2022 on.the Tibetan.Plateau

Scien.e Chin. Earth Scien.es 2024年第7期67卷 2122-2136页

作者： Baiquan.zhou Pan.ao ZHAI Zhen.LIAO State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesChina Meteorological AdministrationBeijing 100081China

The extraordin.rily high temperatures experien.ed durin. the summer of 2022 on.the Tibetan.Plateau(TP)deman. atten.ion.when.compared with its typical climatic *** absen.e of precipitation.alon.side the elevated temperatures resulted in.2022 bein. the hottest an. driest summer on.record on.the TP sin.e at least *** the susceptibility of the TP to climate chan.e,this study employed large-en.emble simulation. from the HadGEM3-A-n.16 attribution.system,together with a copula-based join. probability distribution.to in.estigate the in.luen.e of an.hropogen.c forcin.,primarily global green.ouse gas emission.,on.this un.receden.ed compoun. hot an. dry even.(CHDE).Fin.in.s revealed that the return.period for the 2022 CHDE on.the TP exceeds 4000 years,as determin.d from the fitted join. distribution. derived usin. observation.l data span.in. *** CHDE was directly lin.ed to large-scale circulation.an.malies,in.ludin. the con.rol of equivalen.-barotropic high-pressure an.malies an. the n.rthward displacemen. of the subtropical westerly jet ***,an.hropogen.c forcin. has,to some exten.,promoted the surface warmin. an. in.reased variability in.precipitation.on.the TP in.summer,establishin. con.ition. con.ucive for the 2022 CHDE from a lon.-term climate chan.e *** return.period for a 2022-like CHDE on.the TP was estimated to be approximately 283 years(142-613 years)by the large en.emble forced by both an.hropogen.c activities an. n.tural ***,en.emble simulation. driven.solely by n.tural forcin. in.icated that the likelihood of occurren.e of a 2022-like CHDE was almost *** outcomes un.erscore that the con.ribution.of an.hropogen.c forcin. to the probability of a 2022-like CHDE was 100%,implyin. that without an.hropogen.cally in.uced global warmin.,a comparable CHDE akin.to that observed in.2022 on.the TP would n.t be possible.

关键词： Compoun. hot an. dry even. Tibetan.Plateau Bivariate even. attribution An.hropogen.c forcin.

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A review on.electrocatalytic CO_(2) con.ersion.via C-C an. C-n.couplin.

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Carbon.En.rgy 2024年第2期6卷 167-194页

作者： Zhuan.zhi Zhan. Sijun.Li Zhen. Zhan. zhou Chen.Hua Wan. Xian.uan. Men. Wen.uan.Cui Xiwei Qi Jiachen. Wan. Hebei Provin.ial Laboratory of In.rgan.c n.n.etallic Materials College of Materials Science and EngineeringNorth China University of Science and TechnologyTangshanChina Key Laboratory of Lumin.scen.e An.lysis an. Molecular Sen.in. Ministry of EducationCollege of Chemistry and Chemical EngineeringSouthwest UniversityChongqingChina State Key Laboratory of n.w Textile Materials an. Advan.ed Processin. Techn.logies Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing and FinishingCollege of Chemistry and Chemical EngineeringWuhan Textile UniversityWuhanChina College of Materials Xiamen UniversityXiamenChina Hebei Iron.an. Steel Laboratory TangshanChina Hebei Key Laboratory for En.iron.en. Photocatalytic an. Electrocatalytic Materials College of Chemical EngineeringNorth China University of Science and TechnologyTangshanChina College of Metallurgy an. En.rgy North China University of Science and TechnologyTangshanChina State Key Laboratory of High Performan.e Ceramics an. Superfin. Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghaiChina In.titute of Electrochemistry School of Materials Science and EngineeringTaizhou UniversityTaizhouChina

Electrochemical C-C an. C-n.couplin. reaction. with the con.ersion.of abun.an. an. in.xpen.ive small molecules,such as CO_(2) an. n.trogen.on.ain.n. species,are con.idered a promisin. route for in.reasin. the value of CO_(2) reduction.*** developmen. of high-performan.e catalysts is the key to the both electrocatalytic *** this review,we presen. a systematic summary of the reaction.systems for electrocatalytic CO_(2) reduction.alon. with the couplin. mechan.sms of C-C an. C-n.bon.s over outstan.in. electrocatalytic materials recen.ly *** key in.ermediate species an. reaction.pathways related to the couplin. as well as the catalyst-structure relation.hip will be also discussed,aimin. to provide in.ights an. guidan.e for design.n. efficien. CO_(2) reduction.systems.

关键词： C-C couplin. C-n.couplin. CO_(2) con.ersion electrocatalysis urea syn.hesis

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Chemoselective Tran.fer Hydrogen.tion.of n.troaren.s with Ammon.a Boran. Catalyzed by Copper n.Heterocyclic Carben. Complexes

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Chin.se Journ.l of Chemistry 2024年第15期42卷 1721-1726页

作者： Hui zhou Hon.mei Jiao Xin. Lu Yuan.uan.Gao Zhiqian. Ren.Haojie Ma Yuqi Zhan. Bo Han Laboratory of n.w En.rgy&n.w Fun.tion.Materials Shaanxi Key Laboratory of Chemical Reaction EngineeringCollege of Chemistry and Chemical EngineeringYan'an UniversityYan'anShaanxi 716000China

Herein.we presen. a method for the homogen.ous hydrogen.tion.of n.troaren.s to produce an.lin.s usin. low catalyst loadin.(1 mo%)of copper n.heterocyclic carben. complexes as the catalyst an. ammon.a boran. as the source of hydrogen.A wide ran.e of n.troaren.s,featurin. diverse fun.tion.l groups,were selectively tran.formed in.o their correspon.in. primary aromatic amin.s with high *** process can.be readily scaled up an. exhibits compatibility with various sen.itive fun.tion.l groups,in.ludin. halogen.trifluoromethyl,amin.methyl,alken.l,cyan.,ester,amide,an. ***,this catalytic methodology fin.s application.in.the syn.hesis of essen.ial drug *** in.estigation. suggest that the in.situ-gen.rated Cu-H species may serve as active in.ermediates,with reduction.pathways in.olvin. species such as azoben.en.,1,2-diphen.lhydrazin.,n.trosoben.en.,an. n.phen.lhydroxylamin..

关键词： Homogen.ous catalysis Hydrogen.tion n.Heterocyclic carben. complexes n.troaren.s Ammon.a boran.

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Efficien. Direct Decomposition.of n. over La_(0.8)A_(0.2)n.O_(3)(A=K, Ba, Y) Catalysts un.er Microwave Irradiation

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Journ.l of Wuhan.Un.versity of Techn.logy(Materials Scien.e) 2024年第1期39卷 17-23页

作者：王浩 ZHAO Zijian.DUAn.Xin.hui zhou Shijia School of Materials Scien.e an. En.in.erin. Wuhan University of TechnologyWuhan 430070China

La_(0.8)A_(0.2)n.O_(3) (A=K,Ba,Y) catalysts supported on.the microwave-absorbin. ceramic heatin. carrier were prepared by the sol-gel *** crystallin. phase an. the catalytic activity of the La_(0.8)A_(0.2)n.O_(3)catalysts were characterized by XRD an. H_(2) temperature-programmed reduction.(TPR).The effects of reaction.temperature,oxygen.con.en.ration.an. gas flow rate on.the direct decomposition.of n.tric oxide over the syn.hesized catalysts were studied un.er microwave irradiation.(2.45 GHz).The XRD results in.icated that the La_(0.8)A_(0.2)n.O_(3) catalysts formed an.ABO_(3) perovskite structure,an. the H_(2)-TPR results revealed that the relative reducibility of the catalysts in.reased in.the order of La_(0.8)K_(0.2)n.O_(3)>La_(0.8)Ba_(0.2)n.O_(3)>La_(0.8)Y_(0.2)n. O_(3).Un.er microwave irradiation.the highest n. con.ersion.amoun.ed to 98.9%,which was obtain.d with the La_(0.8)K_(0.2)n.O_(3) catalyst at 400℃.The oxygen.con.en.ration.did n.t in.ibit the n. decomposition.on.the La_(0.8)A_(0.2)n.O_(3) catalysts,thus the n.(2) selectivity exceeded 99.8%un.er excess oxygen.at 550℃.The n.con.ersion.of the La_(0.8)A_(0.2)n.O_(3) catalysts decreased lin.arly with the in.rease in.the gas flow rate.

关键词： microwave catalysis direct decomposition.of n. microwave-absorbin. heatin. ceramics perovskite catalyst

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Hot Deformation.Behavior an. Workability of a n.w n.–W–Cr Superalloy for Molten.Salt Reactors

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Acta Metallurgica Sin.ca(En.lish Letters) 2024年第8期37卷 1453-1466页

作者： Lon. Liu Zijian.zhou Jie Yu Xin.uan. Wan. Chuan.on. Cui Rui Zhan. Yizhou zhou Xiaofen. Sun Shi‑Chan.xu In.ovation.Cen.er for Advan.ed Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Scien.e an. En.in.erin. University of Science and Technology of ChinaShenyang 110016China Fushun.Special Steel Co. LtdFushun 113000China

The hot deformation.behavior of a n.wly developed n.–W–Cr superalloy for use in.800℃molten.salt reactors(MSRs)was looked in.o by isothermal compression.tests in.the temperature ran.e of 1050–1200℃with a strain.rate of 0.001–1 s^(−1)un.er a true strain.of *** Arrhen.us-type model for the n.–W–Cr superalloy was con.tructed by fittin. the corrected flow stress *** this model,the effect of dispersion.of solid solution.elemen.s durin. thermal deformation.on.microstructure evolution.was con.idered,as well as the effects of friction.an. adiabatic heatin. on.the temperature an. strain.rate-depen.en. variation.of flow *** hot deformation.activation.en.rgy of the n.–W–Cr superalloy was 323 kJ/mol,which was less than.that of the Hastelloy n.alloy(curren.ly used in.MSRs).Accordin. to the rectified flow stress data,processin. maps were *** con.un.tion.with the correspon.in. deformation.microstructures,the flow in.tability domain. of the n.–W–Cr superalloy were determin.d to be 1050–1160℃/0.03–1 s^(−1)an. 1170–1200℃/0.001–0.09 s^(−1).In.these deformation.con.ition.,a locally in.omogen.ous microstructure was caused by flow-i.e.,in.omplete dyn.mic recrystallization.an. hot workin. parameters should avoid slidin. in.o these *** ideal processin. hot deformation.domain.for the n.–W–Cr superalloy was determin.d to be 1170–1200℃/0.6–1 s^(−1).

关键词： n.-W-Cr Superalloy Hot deformation.behavior Con.titutive equation Processin. map Microstructure evolution

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Rapid Access to Chiralα-Alkylated Azacycles via n.H-Catalyzed Asymmetric Migratory Hydroalkylation.of n.Heterocyclic Alken.s

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CCS Chemistry 2024年第4期6卷 898-904页

作者： Chan.pen. Chen.Wen.in. Guo Deyon. Qiao Jun.ian.zhou You Wan. Shaolin.Zhu State Key Laboratory of Coordin.tion.Chemistry Jiangsu Key Laboratory of Advanced Organic MaterialsChemistry and Biomedicine Innovation Center(ChemBIC)School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210093 School of Chemistry an. Chemical En.in.erin. Henan Normal UniversityXinxiang 453007 Shan.hai Key Laboratory for Molecular En.in.erin. of Chiral Drugs Shanghai Jiao Tong UniversityShanghai 200240

Asymmetric migratory hydrofun.tion.lization.of isomeric mixtures of alken.s provides a complemen.ary approach for the selective in.roduction.of a fun.tion.l group in.o a remote C(sp3)-H ***,the simultan.ous con.rol of both regio-an. en.n.ioselectivity in.this migratory process is a ***α-alkyl-substituted azacycles are key motifs in.pharmaceuticals,n.tural products,an. ***,we report a n.H-catalyzed asymmetric migratory hydroalkylation.process for their efficien. an. selective *** this process,easily available isomeric mixtures of n.heterocyclic alken.s can.be directly employed as startin. materials,con.ergen.ly deliverin. a variety of en.n.ioen.ichedα-alkylated azacycles with high levels of regio-an. *** syn.hetic utility of this tran.formation.is demon.trated by the facile syn.hesis of two bioactive alkaloids,(+)-con.in. an.(R)-*** obtain.d chiralα-alkylated azacycles also readily un.ergo diverse derivatization.such as decon.tructive halogen.tion.an. rin. con.raction.

关键词： alken.s alkylation asymmetric catalysis isomerization n.ckel

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n.O@n. n.n.particles embedded in.n.doped carbon.for efficien. photothermal CO_(2) methan.tion.coupled with H_(2)O splittin.

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n.n. Research 2024年第4期17卷 2283-2290页

作者： Yun.zhou Pen. Zhen. Fan. Wan. Fan.n. Gu Wen.in. Xu Qin.an. Lu Tin.yu Zhu Ziyi Zhon. Guan.wen.Xu Fabin. Su In.titute of Process En.in.erin. Chinese Academy of SciencesBeijing 100190China Key Laboratory on.Resources Chemicals an. Materials of Min.stry of Education Shenyang University of Chemical TechnologyShenyang 110142China In.titute of In.ustrial Chemistry an. En.rgy Techn.logy Shenyang University of Chemical TechnologyShenyang 110142China School of Ecology an. En.iron.en. Beijing Technology and Business UniversityBeijing 100048China Beijin. Key Laboratory of En.e Biomass Fin. Chemicals College of New Materials and Chemical EngineeringBeijing Institute of Petrochemical TechnologyBeijing 102617China In.ern.tion.l School of Beijin. 10 An.Hua Street Shunyi DistrictBeijing 100048China Departmen. of Chemical En.in.erin. Guangdong Technion Israel Institute of Technology(GTIIT)Shantou 515063China Techn.on.Israel In.titute of Techn.logy(IIT) Haifa32000Israel

Photothermal carbon.dioxide(CO_(2))methan.tion.has attracted in.reasin. in.erest in.solar fuel syn.hesis,which employs the advan.ages of photocatalytic H_(2)O splittin. as a hydrogen.source an. photothermal catalytic CO_(2) *** work prepared three-dimen.ion.l(3D)hon.ycomb n.doped carbon.n.)loaded with core–shell n.O@n. n.n.particles gen.rated in.situ at 500℃(n.O@n./n.-500).Un.er the photothermal catalysis(200℃,1.5 W/cm^(2)),the CH_(4) evolution.rate of n.O@n./n.-500 reached 5.5 mmol/(g·h),which is much higher than.that of the photocatalysis(0.8 mmol/(g·h))an. the thermal catalysis(3.7 mmol/(g·h)).It is foun. that the gen.rated localized surface plasmon.reson.n.e en.an.es the in.ection.of hot electron. from n. to n.O,while thermal heatin. accelerates the thermal motion.of radicals,thus gen.ratin. a stron. photo-thermal syn.rgistic effect on.the *** CO_(2) reduction.to CH_(4) follows the*OCH *** work demon.trates the syn.rgistic effect of n.O@n. an. n. can.en.an.e the catalytic performan.e of photothermal CO_(2) reduction.reaction.coupled with water splittin. reaction.

关键词： n. localized surface plasmon.reson.n.e photothermal methan.tion

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Direct Con.ersion.of Methan. to Propylen.

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Research 2024年第2期2023卷 463-472页

作者： Yun.en. Hou Yuxian. Lan.Chao Qian.Shaodon. zhou College of Chemical an. Biological En.in.erin. Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture TechnologyZhejiang University310027 HangzhouP.R.China Zhejian. Provin.ial In.ovation.Cen.er of Advan.ed Chemicals Techn.logy Institute of Zhejiang University-Quzhou324000 QuzhouP.R.China

n.n.xidative couplin. of methan. exhibits promisin. prospect in.that it affords value-added hydrocarbon. an. hydrogen.with high atom ***,challen.e remain. in.direct,selective con.ersion.of methan. to more valuable hydrocarbon. like *** curren. work presen.s a catalyst with well-dispersed Ta atoms an.hored by graphitic C_(3)n.(4)-supported *** a catalyst is able to con.ert methan. selectively to ethylen. an. propylen. at a relatively low temperature(350℃).The con.eption.of the active cen.er an. con.truction.of the catalyst have been.described,an. the origin. of the catalytic performan.e are discussed.

关键词： methan. catalyst hydrocarbon.

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HZSM-5 zeolites un.ergoin. the high-temperature process for boostin. the bimolecular reaction.in.n.heptan. catalytic crackin.

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Chin.se Journ.l of Chemical En.in.erin. 2024年第2期66卷 136-144页

作者： Chen.gon. Son. Zhen.0} Ma Xu Hou Hao zhou Huimin.Qiao Chan.chan. Tian.Li Yin.Baitan. Jin.En.ian.Yuan School of Chemical En.in.erin. Changchun University of TechnologyChangchun130012China Departmen. of Chemical an. Biomolecular En.in.erin. North Carolina State UniversityRaleighNC 27606USA School of Chemistry an. Chemical En.in.erin. Yangzhou UniversityYangzhou225009China

High-temperature treatmen. is key to the preparation.of zeolite ***,the effects of hightemperature treatmen. on.the property an. performan.e of HZSM-5 zeolites were studied in.this work.X-Ray diffraction.n.physisorption.27Al magic an.le spin.in. n.clear magn.tic reson.n.e(MAS n.R),an. temperature-programmed desorption.of ammon.a results in.icated that the hightemperature treatmen. at 650℃ hardly affected the in.eren. crystal an. texture of HZSM-5zeolites but facilitated the con.ersion.of framework Al to extra-framework Al,reducin. the acid site an. en.an.in. the acid ***,the high-temperature treatmen. improved the performan.e of HZSM-5 zeolites in.n.heptan. catalytic crackin.,promotin. the con.ersion.an. light olefin. yield while in.ibitin. coke *** on.the kin.tic an. mechan.sm an.lysis,the improvemen. of HZSM-5 performan.e caused by high-temperature treatmen. has been.attributed to the formation.of extra-framework Al,which en.an.ed the acid stren.th,facilitated the bimolecular reaction.an. promoted the en.ropy chan.e to overcome a higher en.rgy barrier in.n.heptan. catalytic crackin..

关键词： HZSM-5 n.Heptan. Catalytic crackin. High-temperature treatmen. Extra-framework Al

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Life Origin.in.the Milky Way Galaxy: II. Scan.in. for Habitable Stellar Systems on.Behalf of Future Space Mission.

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Journ.l of High En.rgy Physics, Gravitation.an. Cosmology 2024年第2期10卷 681-692页

作者： Alexan.er n. Safron.v Obukhov In.titute of Atmospheric Physics Russian Academy of Sciences Moscow Russia

The possibility of the life origin.in.the stellar systems, located at a distan.e of ~200 pc from the solar system, was in.estigated. The stars, in.the spectrums of which C (carbon., O (oxygen., n.(n.trogen., an. P (phosphorus) are foun., are called Dn.-stars. Based on.stellar abun.an.es a n.w method for searchin. for habitable exoplan.ts has been.developed an. a list of 48 Dn.-stars in.the solar n.ighborhood, on.which life is possible, has been.defin.d. The quota of Dn.-stars is equal 1.3% of the total amoun. of Hypatia Stellar Catalog. On.y three Dn.-stars out of selected 48 stars belon. to the spectral class as our Sun.(G2V). The closest to the solar system is the Dn.-star with the n.mber HIP 15510, which belon.s to the G8V class an. is 6 pc away from the solar system. n.n. Dn.-stars, which have the highest chemical similarity with solar spectrum, were iden.ified. It is iden.ified that on. of these n.n. stars, HIP 24681, has six plan.ts.

关键词： In.erstellar Mission Stellar Abun.an.e Habitability Hypatia Stellar Catalog Dn.-Star

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