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Enantioselective Transfer Hydrogenation of Aromatic Ketones Catalyzed by New Diaminodiphosphine Ru(Ⅱ) Complexes

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Chemical Research in Chinese Universities 1998年第3期14卷 118-121页

作者： XU Pian-pian GAO Jing-xing YI Xiao-dong HUANG You-qing ZHANG Hui WAN Hui-lin tsai khi-rui Ikariya Takao Department of Chemistry State Key Laboratory for Physical Chemistry of Solid Surface and Institute of Physical ChemistryXiamen Univer sityXiamen361005 Department of Chemical Engineering􂀠 Faculty of EngineeringTokyo Institute of Technology2-12-1O-okayamaMeguro-kuToyotoJapan

Ｃｈｉｒａｌｂｉｐｈｏｓｐｈｉｎｅｌｉｇａｎｄｓｐｒｏｖｉｄｅａｕｓｅｆｕｌｔｏｏｌｆｏｒｐｒｅｐａｒｉｎｇｏｐｔｉｃａｌｙａｃｔｉｖｅｓｅｃｏｎｄａｒｙａｌｃｏｈｏｌｓａｎｄｈａｖｅｂｅｅｎｔｈｅｉｎｔｅｒｅｓｔｉ... 详细信息

Ｃｈｉｒａｌｂｉｐｈｏｓｐｈｉｎｅｌｉｇａｎｄｓｐｒｏｖｉｄｅａｕｓｅｆｕｌｔｏｏｌｆｏｒｐｒｅｐａｒｉｎｇｏｐｔｉｃａｌｙａｃｔｉｖｅｓｅｃｏｎｄａｒｙａｌｃｏｈｏｌｓａｎｄｈａｖｅｂｅｅｎｔｈｅｉｎｔｅｒｅｓｔｉｎｇｓｕｂｊｅｃｔｏｆｎｕｍｅｒｏ...

关键词： Chiral ligand Ruthenium complex Asymmetric transfer hydrogenation

Studies on Catalysis in Partial Oxidation of Methane to Syngas(Ⅰ)──Performance and Characterization of Ni-based Catalysts

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Chemical Research in Chinese Universities 1996年第1期12卷 70-80页

作者： CHEN Ping ZHANG Hong-bin LIN Guo-dong and tsai khi-rui (Department of Chemistry &. State Key Laboratory for Physical Chemistry of the Solid Surface, Xiamen University, Xiamen, 361005) XIAMEN UNIV DEPT CHEMXIAMEN 361005PEOPLES R CHINA XIAMEN UNIV STATE KEY LAB PHYS CHEM SOLID SURFACEXIAMEN 361005PEOPLES R CHINA

Highly active and selective Ni-based catalysts for partial oxidation of methane (POM) to syngas (CO/H,) have been studied and developed. Spectroscopic characterization by XRD, XPS, EPR, etc. demonstrated that under the POM reaction conditions, the Ni-components of the catalysts investigated were reduced and enriched on the surface to form metallic Ni0-phase. A comparative study of the first series of transition-metals showed that only Ni and Co have a high POM activity and selectivity, whereas the others (including Mn, Fe, Cu, etc. ) give mainly complete combustion products, Co, and H2O. The results favor the following viewpoints: the PoM activity is related with the rapidly changeable valence transitionmetal sites, M0/M2+ (e. g. Ni0/Ni2+ ), on the surface of the functioning catalysts;the transition-metal sites in zero-valence state seem to be responsible for the activation and dehydrogenation of methane by homolytic splitting of its C-H bonds on these sites. and the nature of rapidly changeable valence of the active sties is requisite for activation and rapid conversion of dioxygen.

关键词： Partial oxidation of methane Syngas Ni-based catalysts

The　Investigation　of　Oxygen　Absorption　over　LaOF　by　Means　of　Raman　Spectroscopy

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Chemical Research in Chinese Universities 1995年第1期11卷 84-86页

作者： ZHOUmXiao-ping CHAO Zi-sheng WANG Shui-juWAN Hui-lin and tsai khi-rui(Department of Chemistry, The National Key Laboratory ofSolid Surface Physics Chemistry , Xiamen Uniuarsity, Xianten , 361005 ) XIAMEN UNIV NATL KEY LAB SOLID SURFACE PHYS CHEMDEPT CHEMXIAMEN 361005PEOPLES R CHINA

ＴｈｅＩｎｖｅｓｔｉｇａｔｉｏｎｏｆＯｘｙｇｅｎＡｂｓｏｒｐｔｉｏｎｏｖｅｒＬａＯＦｂｙＭｅａｎｓｏｆＲａｍａｎＳｐｅｃｔｒｏｓｃｏｐｙＺＨＯＵｍＸｉａｏ－ｐｉｎｇ，ＣＨＡＯＺｉ－ｓｈｅｎｇ，ＷＡＮＧＳｈｕｉ－ｊｕＷ... 详细信息

ＴｈｅＩｎｖｅｓｔｉｇａｔｉｏｎｏｆＯｘｙｇｅｎＡｂｓｏｒｐｔｉｏｎｏｖｅｒＬａＯＦｂｙＭｅａｎｓｏｆＲａｍａｎＳｐｅｃｔｒｏｓｃｏｐｙＺＨＯＵｍＸｉａｏ－ｐｉｎｇ，ＣＨＡＯＺｉ－ｓｈｅｎｇ，ＷＡＮＧＳｈｕｉ－ｊｕＷＡＮＨｕｉ－ｌｉｎａｎｄＴｓａｉＫ...

关键词： Oxygen species Perturbed oxygen species O_2 absorption

EHMO　Studies　of　Chemisorbed　Dioxygen　Species　on　Na＿2O　and　K＿2O　and　of　Their　Interaction　with　CH＿4　and　CH＿3－Radical

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Chemical Research in Chinese Universities 1995年第1期11卷 50-57页

作者： SU Qiao-Juan ZHANG Hong-bin ZHOU Tai-jin LIU Yu-da LIN Guo-dong and tsai khi-rui(Dept. of Chemistry &. State Key Laboratory for Phys. Chemistry ofthe Solid Surface , Xiarnen Univ. , Xianien , 361005) XIAMEN UNIV DEPT CHEMXIAMEN 361005PEOPLES R CHINA XIAMEN UNIV STATE KEY LAB PHYS CHEM SOLID SURFACEXIAMEN 361005PEOPLES R CHINA

ith an improved EHMO method, three modes (flat-lying, vertical , and in-clined insertion) for adsorption and activation of dioxygen on (100) , (110) and(111) surfaces of Na_2O and of K,O have been exaniinecl, and the interaction ofthese dioxygen adspecies with CH_4 and with CH_3 · (radical) from gas pliase liasbeen investigated. The results indicate that both oxides tend to forni less cliargedadspecies of dioxygen, with the flat-lying adsorption on (110) surface most favor-able energetically. All these cliemisorbed dioxygen species are capable of interactingeffectively with CH_4 and Abstract ing one hydrogen atom from the CH_4 molecule andtheir tendencies to reassociate with CH_3 · , which would easily lead to deep oxida-tion of the fragments of hydrocarbons, are enhanced with inereasing negativecliarges on them. In comparison with Na_2O, K_2O has a little stronger tendency tostabilize less charged dioxygen adspecies; this has a close relation with the knownexperimental fact that K￣+ showed better promoting effect than Na￣+ in improvingC_2-selectivity in methane oxidative coupling (MOC ).

关键词： Chemisorbed dioxygen species Methane oxidative coupling EHMOapproach

Structural　Access　to　Citrate　Process──Synthesis　and　Structure　of　Sodium－Potassium　Oxocitraovanadate（Ⅳ）　Dimer

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Chinese Journal of Structural Chemistry 1995年第Z1期 337-341页

作者： Zhou Zhao-Hui Wan Hui-Lin Hu Sheng-Zhi tsai khi-rui(Department of Chemistry,Xiamen University,Xiamen 361005, China)

ＳｔｒｕｃｔｕｒａｌＡｃｃｅｓｓｔｏＣｉｔｒａｔｅＰｒｏｃｅｓｓ──ＳｙｎｔｈｅｓｉｓａｎｄＳｔｒｕｃｔｕｒｅｏｆＳｏｄｉｕｍ－ＰｏｔａｓｓｉｕｍＯｘｏｃｉｔｒａｏｖａｎａｄａｔｅ（Ⅳ）Ｄｉｍｅｒ￥ＺｈｏｕＺｈａｏ－... 详细信息

ＳｔｒｕｃｔｕｒａｌＡｃｃｅｓｓｔｏＣｉｔｒａｔｅＰｒｏｃｅｓｓ──ＳｙｎｔｈｅｓｉｓａｎｄＳｔｒｕｃｔｕｒｅｏｆＳｏｄｉｕｍ－ＰｏｔａｓｓｉｕｍＯｘｏｃｉｔｒａｏｖａｎａｄａｔｅ（Ⅳ）Ｄｉｍｅｒ￥ＺｈｏｕＺｈａｏ－Ｈｕｉ；ＷａｎＨｕｉ－Ｌｉｎ；Ｈｕ...

关键词： citrate process precursor method vanadyl citrate molecular structure

METHANE OXIDATIVE COUPLING: SYNERGISTIC PROMOTION OF BINARY METAL FLUORIDES TO THORIA BASED CATALYST ThO2/LaF3/BaF2

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Journal of Energy Chemistry 1996年第1期 31-44页

作者： ZHOU Xiao-Ping CHAO Zi-Sheng WAN Hui-Lin tsai khi-rui (Department of Chemistry, Xiamen University Xiamen, Fujian 361005 To whom correspondence should be addressed)

Methane oxidative coupling was investigated on ThO2/LaF3,ThO2/BaF2 and ThO2/LaF3/BaF2 catalysts. A synergistic promoting effect of binary metal fluorides BaF2 and LaF3 to metal oxide ThO2 was found over ThO2/LaF3/BaF2 catalyst. The analysis of phase composition shows that there are abundant. lattice defect in ThO2/LaF3/BaF2 catalyst. XPS and Raman charactenzation indicate that there exist O22-, O2 and the intermediate oxygen species, and a large amount of quasi-free electrons over ThO2f/LaF3/BaF2 catalyst.

关键词： methane oxidative coupling binary metal fluorides synergistic promotion. thoria based catalyst oxygen species

THE ADSORPTION OF OXYGEN OVER ThO2-BaF2 CATALYST

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Journal of Energy Chemistry 1996年第1期 22-30页

作者： ZHOU Xiao-Ping CHAO Zi-Sheng WAN Hui-Lin tsai khi-rui(Department of Chemistry, Xiamen University Xiamen, Fujian 361005 To whom correspondence should be addressed)

The adsorption of O2 over ThO2-BaF2 catalyst was studied at room temperature. Raman experiments reveal that there is much stronger adsorption of O2 on ThO2-BaF2 than on ThO2 XRD results suggest that ionic exchange exists between BaF2 and ThO2 phases forming the O-species and quasi-free electrons in ThO2-BaF2. The XPS, Raman and EPR results indicate that O22-, O2- and intermediate oxygen species O2n- and O2δ- (1更多还原AbstractFilter('ChDivSummary', 'ChDivSummaryMore', 'ChDivSummaryReset');

关键词： oxygen species metal fluoride ThO2-BaF2

CHARACTERISTIC STUDIES OF MoSx/K+-SiO2 CATALYSTS FOR SYNTHESIS OF MIXED ALCOHOLS FROM SYNGAS

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Journal of Energy Chemistry 1992年第1期 1-10页

作者： ZHANG,Hong-Bin HUANG,Hao-Ping LIN,Guo-Dong tsai,khi-rui Department of Chemistry and Institute of Physical Chemistry Xiamen University,Xiamen,Fujian 361005 Received February 28,1991

Characteristic studies,by means of XRD,XPS and TPD,of MoS/K-SiOcatalysts for thesynthesis of mixed alcohols provided experimental evidence for the formation of Mo-S-K surface phaseand the presence of disulfide species,（S-S）,at the surface of *** of the origins of thepromoter action in shifting the selectivity from hydrocarbons to alcohols is likely that the addition ofalkali salt led to a decrease in concentration of（S-S）at the surface,which in turn would reduce thegeneration of the reactive hydrogen.

关键词： SiO2 CATALYSTS FOR SYNTHESIS OF MIXED ALCOHOLS FROM SYNGAS CO CHARACTERISTIC STUDIES OF MoS_x/K

Coke-Resistant　Ni-based　Catayst　for　Partial　Oxidation　and　CO_2-Reforming　of　Methane　to　Syngas

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Chemical Research in Chinese Universities 1997年第1期13卷 85-87页

作者： CHEN Ping, ZHANG Hong bin, LIN Guo dong, GUO Zhong ping, tsai khi rui (Department of Chemistry & State Key Laboratory for Physical Chemistry of the Solid Surface, Xiamen University, Xiamen, 361005)

Ｃｏｋｅ┐ＲｅｓｉｓｔａｎｔＮｉ┐ｂａｓｅｄＣａｔａｙｓｔｆｏｒＰａｒｔｉａｌＯｘｉｄａｔｉｏｎａｎｄＣＯ２┐ＲｅｆｏｒｍｉｎｇｏｆＭｅｔｈａｎｅｔｏＳｙｎｇａｓ＊ＣＨＥＮＰｉｎｇ，ＺＨＡＮＧＨｏｎｇ－ｂｉｎ＊＊，Ｌ... 详细信息

Ｃｏｋｅ┐ＲｅｓｉｓｔａｎｔＮｉ┐ｂａｓｅｄＣａｔａｙｓｔｆｏｒＰａｒｔｉａｌＯｘｉｄａｔｉｏｎａｎｄＣＯ２┐ＲｅｆｏｒｍｉｎｇｏｆＭｅｔｈａｎｅｔｏＳｙｎｇａｓ＊ＣＨＥＮＰｉｎｇ，ＺＨＡＮＧＨｏｎｇ－ｂｉｎ＊＊，ＬＩＮＧｕｏ－ｄｏｎｇ，ＧＵＯＺｈｏ...

关键词： Coke resistant Ni catalyst Methane Partial oxidation CO 2 reforming Syngas