配位催化 的英文怎麼說
中文拼音 [pèiwèicuīhuà]
配位催化
英文
coordination catalysis-
This thesis was composed in three parts : ( 1 ) the performance of the catalysts for the oligomerization and polymerization of ethylene ; ( 2 ) the comonomer effect of the in - situ copolymerization of ethylene by the bis ( imino ) - pyridyl iron complexes and metallocenes ; ( 3 ) the in - situ copolymerization of ethylene by cobalt - based catalysts and metallocenes
本論文共分為3部分:催化劑性能的評價,雙亞胺基吡啶鐵配合物與茂金屬復配催化乙烯原位共聚中的共單體效應以及雙亞胺基吡啶鈷配合物與茂金屬復配催化乙烯原位共聚。Syntheses of ? ? diimine and 2 - aminopyridine transiting metal complexes bearing 2, 6 - unsym - substituents on the aryl, and investigation on the steric and electronic effects of the unsym - subatituents on the catalytic property
以2 , 6位不同基團取代的苯胺與相應的二酮反應合成系列的? ?二亞胺和吡啶胺基過渡金屬配合物。主要考察芳環2 , 6位基團立體位阻對催化性能的影響,同時也考慮基團的推拉電子效應。By using sterically hindered, electron - rich alkylphosphines and n - heterocyclic carbenes ( nhc ), this process has encompassed a broad range of substrates including ketones, aldehydes, esters, amides, malonates, nitrocompounds, nitriles and sulfones
隨著大位阻、富電子烷基膦和氮雜環卡賓( nhc )為配體的催化體系的出現,該類反應的底物已從酮擴展到醛、酯、酰胺以及含酸性氫的化合物如丙二酸酯、硝基化合物、腈、碸等。Ab initio study on the structures and vibrational frequencies of cyclodode - 1, 6 - diene - 2, 4, 8, 10 - tetrayne
醇胺合鋅配位熱力學及其催化酯水解研究The results indicate that tuning chelate size can not only change the enantioselectivity, but also change the enantiofacial selectivity completely
研究結果還表明除通過改變配體手性中心的構型,調節配體配位空間也可以改變催化劑的對映面選擇性。In part 3, the in - situ copolymerization of ethylene was investigated by the combinations of the cobalt - based catalyst and the metallocene to prepare short - branched polyethylene. the major oligomers catalyzed by the cobalt - based catalyst 5, 6 and 7 werel - butene, and the minor were 1 - hexene. the comonomer effects were also observed
在雙亞胺基吡啶鈷配合物與茂金屬復配催化乙烯原位共聚制備短支鏈支化聚乙烯中,合成了3種雙亞胺基吡啶鈷配合物,研究了反應條件對其催化乙烯齊聚活性和所得產物碳數分佈的影響。With the decreasing in the " bite - angle " of the metallocene, the maximum activities of the systems also decreased. the structure of the iron - based catalyst had some influence on the optimum value of n ( fe ) / n ( zr )
而齊聚催化劑的電子效應對整個原位共聚體系中出現共單體效應時齊聚催化劑與共聚催化劑的最佳配比影響較明顯。In this paper aircraft has made vertical and synthetic detecting flying purposefully on 9. 17, 2003 according to cloud ' s macro and microstructure. vertical layers and representative places of stratiform cloud on 9. 17, 2003 are analyzed using the observational data of particle measurement system ( pms ), combined with satellite data, radar data, and precipitation data on ground. by this we have got cloud ' s microphysical structure and physical process of the natural precipitation, and the physical effect evidence has been testified according to observational data after lco2 seeding
本文用綜合觀測的方法,利用機載pms雲粒子探測系統,根據雲系的宏微觀結構特徵進行有針對性的垂直探測飛行,配合衛星、雷達、地面雨量、雨強計網觀測資料對2003年9月17日延安降水性層狀雲系中那些有代表性的部位或垂直分層做細致的觀測分析,獲得雲系的微物理結構和自然降水形成的物理過程,並用觀測事實來驗證人工增雨引晶催化后的物理響應判據。Mol l, artemisinin can be reduced via the hemin - catalysis and its original cathodic peak at - 1. 08v completely disappeared. the cathodic overpotential of artemisinin is decreased ca. 600mv. this process is verified by the fact that complex edta - fe can also promote the artemisinin reduction with decreasing the cathodic overpotential of artemisinin for 590mv. these results show that the reduction of artemisinin at the glassy carbon electrode is a catalytic process with the aids of hemin. hemin can greatly decrease the cathodic activation energy of the reduction of artemisinin and promote the decomposition of artemisinin
Mol l氯化血紅素存在下,青蒿素仍可被催化還原,陰極過電位降低了600mv 。配合物edta - fe具有類似氯化血紅素的催化性質,它降低了qhs陰極過電位590mv 。在這個體系中,青蒿素在碳電極上的還原是一個藉助于氯化血紅素催化的還原過程,氯化血紅素的存在降低了青蒿素還原活化能,促進了青蒿素的分解。Nickel - based olefin polymerization catalysts are new - type catalysts, which have been attracted much attention in recent years
鎳系烯烴聚合催化劑是近年來受到廣泛關注的一類新型催化劑,是配位催化研究的熱點之一。In conclusion, the properties of the polymers can be controlled to some extent by simply adjusting the ratio of the catalysts ( n ( fe ) / n ( zr ) ) in the in - situ copolymerization of ethylene
在乙烯原位共聚中,可以通過調節齊聚催化劑與共聚催化劑的配比對聚合產物的物理性能進行控制。Yuan kou, ph. d. ( 1990, cas ), research fellow ( 1986 - 1988, aots ), post - doc ( 1993 - 94, ucsd ), visiting professor ( 1997, kyoto university ), deputy director of osso state key lab, cas ( 1991 - 1997 ), now is a professor of chemistry, peking university, member of national committee for catalysis, member of national committee for petro - chemicals, project leader, member of 7 - experts committee, 973 project ( energy resources / environmental ), associate editor of chinese journal of catalysis
寇元,理學博士( 1990 ) ,日本aots進修生( 1986 - 1988 ) ,美國ucsd博士后( 1993 - 1994 ) ,日本京都大學高訪教授( 1997 ) ,原中國科學院osso國家重點實驗室專職副主任( 1991 - 1997 ) ,現任北京大學教授,博士生導師,中國化學會催化專業委員會委員,中國化工學會石油化工專業委員會委員, 973多個項目的專家組成員,多家國內學術期刊編委, 《催化學報》副主編,長期從事溫室氣體催化轉化和納米簇結構及復制研究,提出表面配位化學/擔載催化劑無定形理論等。The metallic enzyme and coordination catalytic mechanism
金屬酶及其配位催化分享友人