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ENHANCED　C_2　YIELD　OF　METHANE　OXIDATIVE　COUPLING　BY　MEANS　OF　A　DOUBLE　LAYERED　CATALYST　BED

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Chinese Chemical Letters 1994年第10期5卷 863-864页

作者： Yu Da LIU Hong Binb ZHANG Qiao Juan SU Guo Dong LIN and khi rui tsai (Department of Chemistry & Institute of Phaical Chemtscy Xiamen University, Xiamen 36100)

A double layered catalst bed with K+-ThO2-BaCO3 to the inlet and La2O3-BaCO3 downflow of the bed has been used to catalyze methane oxidative coupling reaction. The coupling reaction The C2 yield and C2 selectivity obtained on the double layered catalyst bed were found to be higher than that obtained with either of the catalyst operating separately.

关键词：

RATE－DETERMINING　STEP　IN　OLEFIN　HYDROFORMYLATION　OVER　SUPPORTED　AQUEOUS－PHASE　CATALYSTS

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Chinese Chemical Letters 1994年第4期5卷 291-294页

作者： You Zhu YUAN Yi Quan YANG Jin Lai XU Hong Bin ZHANG and khi rui tsai(Deportment of Chemistry Institute of Physical Chemistry Xiamen University Xiamen 361005)

A series of olefin hydroformylations over supported aqueous-phase rhodium catalyst with the substitUtion of CO/D2 for CO/H2 were cAned out to study the isotope effects of deuterium. The rate of aldehyde formation in CO/D2 was about 1.3 times faster than that in COns2, indicating that the aldehyde formation shows noticeable inverse deuterium isotope effect over SAP catalyst. The results of in-situIR stUdy of ethylene hydroformylation suggest that the reaction rate of acylhydrogenolysis forming aldehyde is the slowest one. It may be inferred from these results that the rate-determining step involved\in aldehyde formation is very probably astep ofhydrogenation.

关键词： STEP DETERMINING OLEFIN HYDROFORMYLATION CATALYSTS AQUEOUS

INSITUFTIR　SPECTRAL　STUDY　OF　THE　OXYGEN　ADSPECIES　ON　SrF2／La2O3　CATALYST　DURING　THE　OXIDATIVE　COUPLING　OF　METHANE

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Chinese Chemical Letters 1995年第8期

作者： rui Qiang LONG Shui Qin ZHOU Ya Ping HUANG Hai You WANG Hui Lin WAN khi rui tsai(Depatment of Chemistry and State Key Laboratory for Physical Chemistry of the Solid Surface,Xiamen University,Xiamen,361005)

ＩＮＳＩＴＵＦＴＩＲＳＰＥＣＴＲＡＬＳＴＵＤＹＯＦＴＨＥＯＸＹＧＥＮＡＤＳＰＥＣＩＥＳＯＮＳｒＦ＿２／Ｌａ＿２Ｏ＿３ＣＡＴＡＬＹＳＴＤＵＲＩＮＧＴＨＥＯＸＩＤＡＴＩＶＥＣＯＵＰＬＩＮＧＯＦＭＥＴＨＡＮＥ￥ＲｕｉＱｉａ... 详细信息

ＩＮＳＩＴＵＦＴＩＲＳＰＥＣＴＲＡＬＳＴＵＤＹＯＦＴＨＥＯＸＹＧＥＮＡＤＳＰＥＣＩＥＳＯＮＳｒＦ＿２／Ｌａ＿２Ｏ＿３ＣＡＴＡＬＹＳＴＤＵＲＩＮＧＴＨＥＯＸＩＤＡＴＩＶＥＣＯＵＰＬＩＮＧＯＦＭＥＴＨＡＮＥ￥ＲｕｉＱｉａｎｇＬＯＮＧ；ＳｈｕｉＱｉｎＺＨＯ...

关键词： La2O3 SrF2 ON DURING CATALYST ADSPECIES

OXIDATIVE COUPLING OF METHANE OVER Na_2CO_3 DOPED ZIRCONIUM DIORIDE

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Chinese Chemical Letters 1991年第12期2卷 967-970页

作者： Yong Qiang GONG, Fan Cheng WANG, Chak Tong AU, Hui Lin WAN, and khi rui tsai Department of Chemistry, Xiamen University and State Key Laboratory for Physical Chemistry of the Solid Surface, Xiamen, 361005

Na_2CO_3/ZrO_2 catalyst shows a high activity of oxidative coupling of methane. It possesses stronger electron donor ability than that of ZrO_2 catalyst. The activation of methane is supposed to relate to the O_2^- or... 详细信息

关键词： than OXIDATIVE COUPLING OF METHANE OVER Na2CO3 DOPED ZIRCONIUM DIORIDE Na CO

Synthesis and Structure of（NH4）₂ [V2O₄（OCH₂COO）₂]

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Chemical Research in Chinese Universities 1994年第2期10卷 102-106页

作者： Zhou, Zhao-hui Wang, Jin-zhi Wan, Hui-lin tsai, khi-rui

imeric ammonium(glycollate)dioxovanadium (NH4)2[V2O4(OCH2COO )2]has been prepared. The complex crystallizes in triclinic space group Pl with unitcell parameters: a = 0. 6124(1)nm, b= 0. 6952 (1)nm, c= 0. 8449 (1)nm, α=66. 08 (1),β=64. 21(1),γ= 78. 01(1)°V=0. 2958 nms, Z=1, R=0. 041. Thedimer contains a quasicentrosymmetric planar four-membered V2O2 ring with twoexocyclic glycollate entities coordinated by the oxygen atoms of hydroxy- and car-boxy late ligands .

关键词： Hydroxycarboxylate Vanadium complex Molecular structure

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

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