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| 1 | 沸石表面有机金属化学──ZSM-5外表面上—Ge(n-C_4H_9)_x基团的接枝及其性质研究显示文摘用气体分析及IR ,NMR和元素分析等方法研究了真空系统中 2 30和 2 80℃下四丁基锗在ZSM 5沸石表面上的接枝反应 ,并对所得沸石的热稳定性和吸附性质进行了表征 .与作者曾报道的在硅胶及丝光沸石上的反应类似 ,四丁基锗也能与ZSM 5沸石表面上的硅羟基发生缩合反应 ,在其外表面或孔口生成组成为 (≡Si—O) xGe(n C4 H9) 4-x(x =13)的表面有机锗化合物 .在 2 30℃接枝丁基锗基团不影响沸石的结构和表面积 ,仅改变它的孔口大小 .在改性后的沸石上 ,N2 的吸附性质没有改变 ,而不同分子尺寸的烃 ,如正己烷、2 甲基戊烷、2 ,3 二甲基丁烷却呈现出完全不同于起始ZSM 5沸石的择形吸附效应 . | 王绪绪 赵慧霞 付贤智 Frédéric LEFEBVRE Jean-Marie BASSET | 2001 | 高等学校化学学报2001，22，2： | 5 |
| 2 | Modification of the adsorption and catalytic properties of micro-and mesoporous materials by reactions with organometallic complexes显示文摘This review describes the work of two laboratories in the field of the modification of micro-and mesoporous molecular sieves through reactions with organometallic complexes.The modification of zeolites can occur inside the pore channels or on the external surface,depending on the size of the organometallic complex.When the modification occurs on the external surface,it results in a decrease of the pore entrance,which will lead in turn to a modification of the sorption properties of the zeolite,by decreasing the rate of the adsorption(mainly by a kinetic control).Such a material can be also used in catalysis,because the external acid sites,which are responsible for side-reactions,have been removed upon grafting.When small organometallic complexes are used,they can fill the channels and cages of the zeolite and react with internal hydroxyl groups.Due to the high acidity of zeolites,the reaction occurs very easily(for example at-100℃ on faujasite),in contrast to what is observed on the external surface,therefore leading to high metal loadings.In that case,the modification of the sorption properties will be mainly related to a thermodynamic control.The resulting materials can be useful in catalysis,by combining the activity of the organometallic complex and properties(for example shape-selectivity) of the zeolite.Modification of mesoporous molecular sieves occurs always in the pores and results in altering of the sorption properties of the solid,by changing the interaction type between the sorbent and the sorbate.For example the sorption isotherm of alkanes is changed from type II to type III according to the IUPAC nomenclature. | LEFEBVRE Frédéric PUTAJ Piotr BASSET Jean-Marie | 2010 | Science China Chemistry2010，53，9： | 4 |
| 3 | Fast unfolding of communities in large networks显示文摘 | Vincent D Blondel Jean-Loup Guillaume Renaud Lambiotte Etienne Lefebvre | 2008 | Journal of Statistical Mechanics: Theory and Expe2008，，： | 2 |
| 4 | Effect of dietary cobalt supplementation on cobalt metabolism and performance of dairy cattle显示文摘 | KINCAID R L LEFEBVRE L E CRONRATH J D | 2003 | Journal of Dairy Science2003，86，4： | 1 |
| 5 | An anaphylactic reaction to transdermal delivered fentanyl显示文摘 | Dewachter P Lefebvre D Kalaboka S | 2009 | Acta Anaesthesiol Scand2009，53，8： | 1 |
| 6 | Female genital cosmetic surgery显示文摘 | Shaw D Lefebvre G Bouchard C | 2013 | J Obstet Gynaecol Can2013，35，12： | 1 |
| 7 | Immobilization of muhifunctional schiff base containing ruthenium complexes on MCM-41显示文摘 | Clercq B D Lefebvre F Verpoort F | 2003 | Appl Catal A2003，247，： | 1 |
| 8 | Single amino acid mutations in the capsid switch the neutralisation phenotype of porcine circovirus 2显示文摘 | Saha D Lefebvre D J Ooms K | | 0，，07： | 1 |
| 9 | Pathologic and virologic findings in mid-gestational porcine foetuses after ex- perimental inoculation with PCV-2a or PCV-2b显示文摘 | Saha D Lefebvre D J Van Doorsselaere J | 2010 | Vet Micro- biol2010，145，12： | 1 |
| 10 | Amazon drought and its implications for forest flammability and tree growth : a basin-wide analysis 显示文摘 | NEPSTAD D LEFEBVRE P SILVA U L D | 2004 | Global Change Biology2004，10，： | 1 |
| 11 | Porous metals and metallic foams current status and recent development 显示文摘 | Lefebvre L P Banhart J Dunmld D C | 2008 | Advanced Engineering Materials2008，10，9： | 1 |
| 12 | Antigenic differences among porcine circovirus type 2 strains, as demonstrated by the use of monoclonal antibodies显示文摘 | Lefebvre D J Costers S | 2008 | J Gen Virol2008，89，： | 1 |
| 13 | A high-strain bi- axial-testing rig for thin-walled tubes under axial load and pressure显示文摘 | Lefebvre D Chebl C Thibodeau L | 1983 | Experimental Mechanics1983，23，4： | 1 |
| 14 | Hydraulic conductivity heterogeneity of alocal deltaic aquifer system from the kriged 3 D dis- tribution of hydrofacies from borehole logs , Valcartier, Canada 显示文摘 | Ouellon T Lefebvre R Marcotte D | 2008 | Journal of Hydrology2008，351，： | 1 |
| 15 | Comprehensive cytochrome P450 CYP1A2 gene analysis in French caucasian patients with familial and sporadic porphyria cutanea tarda显示文摘 | Tchernitchko D Robr6an AM Lefebvre T | 2012 | Br J Dermatol2012，166，2： | 1 |
| 16 | Correlation between the presence of neutralizing antibodies against porcine circovirus 2(PCV2) and protection against replication of the virus and development of PCV2-associated disease显示文摘 | Meerts P Misinzo G Lefebvre D | 2006 | BMC Veterinary Research2006，2，： | 1 |
| 17 | Effect of deep brain stimulation and L-Dopa on electrocortical rhythms related to move-ment in Parkinson's disease显示文摘 | Devos D Lefebvre L | | 0，，： | 1 |
| 18 | Proto- eadherins mediate dendritic self-avoidance in the mammalian nervous system显示文摘 | LEFEBVRE J L KOSTADINOV D CHEN W V | 2012 | Nature2012，488，7412： | 1 |
| 19 | Somatic cell nuclear transfer alters peri-implantation trophoblast differentiation in bovine embryos 显示文摘 | Arnold D R Bordignon V Lefebvre R | 2006 | Reproduction2006，132，： | 1 |
| 20 | Polymicrobial candidaemia revealed by peripheral blood smear and chromogenic medium显示文摘 | Yera H Poulain D Lefebvre A | | 0，，： | 1 |
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