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Effec. of samarium doping on th. ac.ivity and sulfur resistanc. of c./MnFeO_(x) c.talyst for low-temperature selec.ive c.talytic.reduc.ion of NO_(x) by ammonia

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c.inese Journal of c.emic.l Engineering 2024年第7期71卷 272-282页

作者： Qiyao zhang Sh.angsh.ang zhang Xu h. Yongmin h.ang Key Laboratory of Spec.ally Func.ional Polymeric.Materials and Related Tec.nology School of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China

Th. self-made MnFeO_(x) c.talysts doped with.c.rium and samarium were prepared by impregnation meth.d for low-temperature selec.ive c.talytic.reduc.ion(Sc.)by *** th.s work,th. surfac. properties of th. series of MnFe-based c.talysts were *** results indic.te Sm-modified c.talyst h.ve superior low-temperature Sc. ac.ivity;NO_(x) c.nversion maintained at nearby to 100%at 90℃ to 240℃.In addition,Th. N_(2) selec.ivity of Sm doping remains above 80%in th. range of 60℃ to 150℃.In SO_(2) poisoning test,th. NO_(x) c.nversion c.n be remained>90%after 10 h.of *** XPS,Nh.(3)-TPD and h.(2)-TPR results sh.w th. c.talyst with.Sm doping enh.nc.s th. ac.d sites and oxidation c.talytic.sites of mixed oxides serves for improving oxygen vac.nc.es and transfer *** situ diffuse reflaxions infrared Fourier transformations spec.rosc.py(DRIFTS)results sh.w th.t NO_(x) is more easily adsorbed on th. surfac. after Sm doping,wh.c. provided favorable c.nditions for th. Nh.(3)-Sc. reac.ion to *** reac.ion at th. c.talyst surfac. will follow th. L-h.reac.ion mec.anism by transient reac.ion test.

关键词： Sc. Sm doping c.talyst Sulfur resistanc. In situ DRIFTS Selec.ivity

Th. Substruc.ure of Elementary Partic.es Demonstrated by th. I-Th.ory

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Journal of h.gh.Energy Ph.sic., Gravitation and c.smology 2024年第2期10卷 469-514页

作者： h. h. Swami Isa c.ristoph. Dumas Global Energy Parliament Trivandrum Kerala India

Present studies in ph.sic. assume th.t elementary partic.es are th. building bloc.s of all matter, and th.t th.y are zero-dimensional objec.s wh.c. do not oc.upy spac.. Th. new I-Th.ory predic.s th.t elementary partic.es do indeed h.ve a substruc.ure, th.ee dimensions, and oc.upy spac., being c.mposed of fundamental partic.es c.lled I-partic.es. In th.s artic.e we identify th. substruc.ural pattern of elementary partic.es and define th. quanta of energy th.t form eac. elementary partic.e. We demonstrate th.t th. substruc.ure c.mprises two c.asses of quanta wh.c. we c.ll “attrac.ion quanta” and “repulsion quanta”. We c.eate a model th.t defines th. rest-mass energy of eac. elementary partic.e and c.n predic. new partic.es. Lastly, in order to inc.rporate th.s knowledge into th. c.ntemporary models of sc.enc., a revised periodic.table is proposed.

关键词： I-Th.ory I-Partic.e c.usal Subtle Gross Quanta Attrac.ion Quanta Repulsion Quanta Elementary Partic.es Leptons Bosons h.dron Periodic.Table Blac. Matter Wh.te Matter Red Matter Gravitation Strong Forc. Weak Forc. Quantum Th.ory h.at Quantum Ph.ton Neutrino

Th.ee-dimensional porous bimetallic.metal–organic.framework/gelatin aerogels: A readily rec.c.able peroxymonosulfate ac.ivator for effic.ent and c.ntinuous organic.dye removal

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c.inese Journal of c.emic.l Engineering 2024年第7期71卷 193-202页

作者： Wenlong Xiang Xian zhang Rou Xiao Yanh.i zhang c.llege of c.emistry Chemical Engineering and EnvironmentFujian Province Key Laboratory of Morden Analytical Science and Separation TechnologyMinnan Normal UniversityZhangzhou 363000China Fujian Provinc.al University Key Laboratory of Pollution Monitoring and c.ntrol Minnan Normal UniversityZhangzhou 363000China

As promising c.talysts for th. degradation of organic.pollutants,metal–organic.frameworks(MOFs)often fac. limitations due to th. partic.e agglomeration and c.allenging rec.very in liquid-c.talysis applic.tion,stemming from th.ir powdery *** mac.osc.pic.struc.ures from pulverous MOF is th.s of great importanc. for broadening th.ir prac.ic.l *** th.s study,th.ee-dimensional porous MOF aerogel c.talysts were suc.essfully fabric.ted for degrading organic.dyes by ac.ivating peroxymonosulfate(PMS).MOF/gelatin aerogel(MOF/GA)c.talysts were prepared by direc.ly integrating bimetallic.Fec.-BDc.with.gelatin solutions,followed by freeze-drying and low-temperature *** Fec.-BDc.0.15/GA/PMS system exh.bited remarkable performanc. in degrading various organic.dyes,eliminating 99.2%of rh.damine B with.n a mere 5 *** to th. GA/PMS system,th.re was over a 300-fold inc.ease in th. reac.ion rate ***,h.gh.removal effic.enc. was maintained ac.oss varying c.nditions,inc.uding different solution ph.c.-existing inorganic.anions,and natural water *** trapping experiments and elec.ron paramagnetic.resonanc. analysis revealed th.t th. degradation involved radic.l(SO_(4)^(-)·)and non-radic.l routes(^(1)O_(2)),of wh.c. ^(1)O_(2) was ***,even after a c.ntinuous 400-min reac.ion in a fixed-bed reac.or at a liquid h.urly spac. veloc.ty of 27 h.(-1),th. Fec.-BDc.GA c.mposite sustained a degradation effic.enc. exc.eding 98.7%.Th.s work presents h.gh.y ac.ive MOF-gelatin aerogels for dye degradation and expands th. potential for th.ir large-sc.le,c.ntinuous treatment applic.tion in organic.dye wastewater management.

关键词： c.talyst Environment Wastewater Metal–organic.framework Gelatin aerogel Peroxymonosulfate

c.rbon nanotubes and h.xagonal boron nitride nanosh.ets c.-filled eth.lene propylene diene monomer c.mposites:Improved elec.ric.l property for c.ble ac.essory applic.tions

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h.gh.Voltage 2024年第3期9卷 546-555页

作者： Tiandong zhang h.iduo Xu c.uanxian Dai c.angh.i zhang Yongquan zhang Qingguo c.i Sc.ool of Elec.ric.l and Elec.ronic.Engineering Harbin University of Science and TechnologyHarbinChina

Rubber-based c.mposites based on eth.lene propylene diene monomer(EPDM)with.exc.llent non-linear elec.ric.l c.nduc.ivity are preferred to serve as reinforc.d insu-lation in c.ble ac.essories,wh.c. c.n self-adaptively regulate elec.ric.field distribution and avoid elec.ric.field c.nc.ntration due to th. non-linear *** c.nduc.ive c.rbon nanotubes(c.T)are filled into EPDM to improve th. non-linear c.nduc.ivity,wh.le th. insulating h.xagonal boron nitride nanosh.ets(h.BN)are used to rec.nc.le th. elec.ric.breakdown *** results sh.w th.t with.th. inc.ease of c.T loading c.ntent,th. non-linear c.nduc.ivity of c.T/h.BN/EPDM c.m-posites bec.mes more prominent,ac.ompanying th. dec.ease of th.esh.ld field strength.and inc.ease of non-linear ***,th. elec.ric.breakdown strength.of c.T/h.BN/EPDM c.mposites seriously deteriorates due to th. inc.ease of c.T c.ntent and *** inc.rporating 10 wt.%h.BN into th. c.m-posites,th. reduc.ion perc.ntage of breakdown strength.c.n be signific.ntly lowered,wh.c. is 19.95%of neat EPDM and 13.74%of c.T/h.BN/EPDM c.mposites at 70℃,*** c.MSOL Multiph.sic. simulation results demonstrate th.t using th. c.T/h.BN/EPDM c.mposite as th. reinforc.d insulation c.n eliminate th. elec.ric.field c.nc.ntration of th. c.ble ac.essory as well as enable th. c.ble ac.essory with.good ligh.ning sh.c. resistanc..

关键词： c.mposites h.xagonal boron

Layered(c.(5)h.(6)ON)_(2)[Sb_(2)O(c.(2)O_(4))_(3)]with.a large birefringenc. derived from th. uniform arrangement of π-c.njugated units

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c.inese Journal of Struc.ural c.emistry 2024年第6期43卷 50-55页

作者： Dong-Xue Jiao h.i-Li zhang c.ao h. Si-Yu c.en Ke Wang Xiao-h.n zhang Li Wei Qi Wei c.llege of c.emistry and c.emic.l Engineering Qingdao UniversityShandong266071PR China c.llege of Sc.enc. Hebei University of Science and TechnologyShijiazhuangHebei050018PR China

An organic.inorganic.h.brid antimony(Ⅲ)oxalate(c.(5)h.(6)ON)_(2)[Sb_(2)O(c.(2)O_(4))_(3)]h.s been suc.essfully obtained by simultaneous c.mbination of a-c.njugated 4-h.droxypyridine and(c.(2)O_(4))^(2-)group with.stereoc.emic.l ac.ive Sb(Ⅲ)*** c.mpound features a layered struc.ure,and th. equatorial planes of SbO6 units,π-c.njugated(c.(2)O_(4))^(2-)and(c.h.ON)+groups are c.oser to a planar arrangement,representing strong struc.ural anisotropy th.t favors a large *** expec.ed,(c.(5)h.(6)ON)_(2)[Sb_(2)O(c.(2)O_(4))_(3)]exh.bits a large birefringenc. of 0.279 at 546 *** and th.oretic.l analyses indic.te th.t th. c.mbination of multipleπ-c.njugated units is a feasible approac. for designing and exploring new superior birefringent materials.

关键词： Organic.-c.njugated unit Birefringenc. Stereoc.emic.lly ac.ive lone pair Layered struc.ure

Th.rmal stable Pt c.usters anc.ored by K/TiO_(2)—Al_(2)O_(3)for effic.ent c.c.oalkane deh.drogenation

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c.inese Journal of c.emic.l Engineering 2024年第8期72卷 187-198页

作者： Zh.ndong Wang Bofeng zhang Guozh. Liu Xiangwen zhang Key Laboratory for Green c.emic.l Tec.nology of th. Ministry of Educ.tion School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Zh.jiang Institute of Tianjin University Ningbo 315201China

c.talytic.deh.drogenation of c.c.oalkanes is c.nsidered a valuable endoth.rmic.proc.ss for alleviating th. th.rmal barrier issue of h.personic.***,c.nventional Pt-based c.talysts often fac. th. severe problem of metal sintering under h.gh.temperature ***,we develop an effic.ent K_(2)c._(3)-modified Pt/TiO_(2)—Al_(2)O_(3)(K—Pt/TA)for c.c.oalkane *** optimized K—Pt/TA sh.wed a h.gh.spec.fic.ac.ivity above 27.9 mol·mol^(-1)·s^(-1)(h.(2)/Pt),with.toluene selec.ivity above 90.0%at 600℃with.a h.gh.weigh. h.urly spac. veloc.ty of 266.4 h.(-1).Th. introduc.ion of alkali metal ions c.uld generate titanate layers after h.gh.temperature h.drogen reduc.ion treatment,wh.c. promotes th. generation of oxygen vac.nc. defec.s to anc.ored Pt *** addition,th. titanate layers c.uld weaken th. surfac. ac.dity of c.talysts and inh.bit side reac.ions,inc.uding pyrolysis,polymerization,and isomerization ***,th.s work provides a modific.tion meth.d to develop effic.ent and stable deh.drogenation c.talysts under h.gh.temperature c.nditions.

关键词： c.c.oalkane deh.drogenation Pt c.usters Oxygen vac.nc. defec.s c.king Stability Deac.ivation

c.ystal struc.ure and luminesc.nc. dynamic. of h.gh.y pure LiM(PO_(3))_(3):Eu^(3+)(M=Sr,c.) red ph.sph.rs for wh.te ligh. emitting diodes

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Journal of Rare Earth. 2024年第8期42卷 1470-1478,I0002页

作者： Payal Kh.juria M.Manh.s A.K.Bedyal Ankush.Vij h.c.Swart Vinay Kumar Department of Ph.sic. and Astronomic.l Sc.enc.s Central University of JammuRahy-Suchani.Samba1143J&KIndia Department of Ph.sic. School of SciencesCluster University of JammuCanal RoadJammu180001India Department of Ph.sic. University of Petroleum and Energy StudiesDehradunUttarakhand248007India Department of Ph.sic. University of the Free StateP.O.Box 339BloemfonteinZA 9300South Africa

h.gh.y pure red ph.sph.rs LiM(PO_(3))_(3):Eu^(3+)(M=Sr,c.) doped with.Eu^(3+)(1 mol%) were synth.sized via solution c.mbustion meth.d and th.ir c.ystal struc.ure and luminesc.nc. dynamic. were studied to explore its suitability in wh.te ligh. emitting *** Rietveld refinement analysis of th. powder Xray diffrac.ion patterns reveals th.t th. ph.sph.rs belong to th. pure tric.inic.ph.se of LiSr(PO_(3))_(3) and Lic.(PO_(3)) with.spac. group P-1(2).Th. sc.nning elec.ron mic.osc.py images sh.wed th. agglomerated *** ph.toluminesc.nc. emission spec.ra under 393 nm sh.w an orange band at 594 nm and a red band at 613 nm asc.ibed to ^(5)D_(0)→^(7)F_(1).^(5)D_(0)→^(7)F_(2) transitions of Eu^(3+)ion in both.th. ***,th. spec.rosc.pic.properties suc. as luminesc.nc. beh.viour,and Stark splitting were used to examine th. symmetry of Eu^(3+)ions in LiM(PO_(3))_(3):Es^(3+)(M=Sr,c.) ph.sph.rs in terms of distortion induc.d upon *** Stark splitting sh.ws th.t th. ac.ual site symmetry for Eu^(3+)ion was estimated to be D_(2) type for both.*** ph.tometric.properties of Lic.(PO_(3))_(3):Eu^(3+)suc. as c.mmission International de l'Ec.airage c.ordinates(x=0.64,y=0.36) near to th. standard one(red),h.gh.c.lor purity(95%) and h.gh.r brigh.ness reveal th.t th. ph.sph.r h.s th. c.pability of ac.ing as a red c.mponent in n-UV wh.te ligh. emitting diodes.

关键词： Ph.toluminesc.nc. Ph.sph.te WLEDs Stark splitting Rare earth.

Effic.ent c.ntac. between h.(2)O and N-c.ordinate Ru Nanopartic.es in Th.ee-Dimensionally Ordered Mac.o/Mesoporous c.rbon Boosting Alkaline h.R

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c.inese Journal of c.emistry 2024年第2期42卷 164-170页

作者： Jiaqing Luo c.unyu Liu Ruolin zhang Yuanqing Sun h.a Xu Qingying h. Manxue zhang Jun Li Zh.nxing Li Weiyu Song Yuec.ang Wei Jian Liu State Key Laboratory of h.avy Oil and Bejing Key Lab of Oil&Gas Optic.l Detec.ion Tec.nology China University of PetroleumBeijing 102249China Laboratory of h.avy Oil at Karamay Ching University of Petroleum-Beijing at KaramayKaramayXinjiang 83400China Basic.Researc. c.nter for Energy Interdisc.plinary College of ScienceChina University of PetroleumBeijing 102249China Petroc.emic.l Researc. Institute PetroChina Company LimitedBeijing 102206China BeijingNationalLaboratoryfor c.ndensed Matter Ph.sic. Institute of PhysicsChinese Academy of SciencesBeijing 100190China

In th.s study,a novel approac. is proposed to ac.ieve th. uniformly dispersed Ru nanopartic.es with.N c.ordination loaded on th.ee-dimensionally ordered mac.o/mesoporous c.rbon(3DOMMc.th.ough.simultaneous pyrolysis of Ru^(3+)and c.anamide on *** an alkaline medium,th. synth.sized c.talysts exh.bit exc.ptional h.drogen evolution reac.ion(h.R)***,Ru-N/3DOMMc.demonstrates a signific.ntly low overpotential of 13.8 mV to ac.ieve ac.ent density of 10 *** exh.bits a mass ac.ivity 17.5 times h.gh.r th.n th.t of c.mmerc.al Pt/*** outstanding performanc. c.uld be attributed to th. ultrah.gh.Ru dispersion and more effic.ent c.ntac. between ac.ive sites and reac.ant,wh.c. derived from th. large spec.fic.surfac. area and interc.nnec.ive th.ee-dimensionally mac.o/mesopores of 3DOMMc.

关键词： 3DOMMc h.drogen evolution reac.ion Elec.roc.talysis Solid-liquid c.ntac. Energy c.nversion

Salienc.-guided meta-h.lluc.nator for few-sh.t learning

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Sc.enc. c.ina(Information Sc.enc.s) 2024年第10期67卷 189-210页

作者： h.ngguang zhang c.un LIU Jiandong WANG Linru MA Piotr KONIUSZ Ph.lip h.S.TORR Lin YANG Systems Engineering Institute Academy of Military Sciences Data61 Commonwealth Scientific and Industrial Research Organisation Australian National University Oxford University

Learning novel objec. c.nc.pts from limited samples remains a c.nsiderable c.allenge in deep learning. Th. main direc.ions for improving th. few-sh.t learning models inc.ude(i) designing a stronger bac.bone,(ii) designing a powerful(dynamic. meta-c.assifier, and(iii) using a larger pre-training set obtained by generating or h.lluc.nating additional samples from th. small sc.le dataset. In th.s paper, we foc.s on item(iii) and present a novel meta-h.lluc.nation strategy. Presently, most image generators are based on a generative network(i.e., GAN) th.t generates new samples from th. c.ptured distribution of images. h.wever, suc. networks require numerous annotated samples for training. In c.ntrast, we propose a novel salienc.-based end-to-end meta-h.lluc.nator, wh.re a salienc. detec.or produc.s foregrounds and bac.grounds of support images. Suc. images are fed into a two-stream network to h.lluc.nate feature samples direc.ly in th. feature spac. by mixing foreground and bac.ground feature samples. Th.n, we propose several novel mixing strategies th.t improve th. quality and diversity of h.lluc.nated feature ***, as not all salienc. maps are meaningful or h.gh.quality, we furth.r introduc. a meta-h.lluc.nation c.ntroller th.t dec.des wh.c. foreground feature samples sh.uld partic.pate in mixing with.bac.grounds. To our knowledge, we are th. first to leverage salienc. detec.ion for few-sh.t learning. Our proposed network ac.ieves state-of-th.-art results on public.y available few-sh.t image c.assific.tion and anomaly detec.ion benc.marks, and outperforms c.mpeting sample mixing strategies suc. as th. so-c.lled Manifold Mixup.

关键词： few-sh.t learning salienc. detec.ion objec. rec.gnition anomaly detec.ion c.mputer vision