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Asymmetric Catalytic Hydrogenation Using Rhodium Diphosphinites Derived From D-glucose and D-mannitol

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chinese chemical Letters 2000年第7期11卷 587-588页

作者： Peng JIANG Shi Jie LU(state key laboratory of oxo synthesis and selective oxidation, lanzhou institute of chemical physics, chinese academy of Sciences, lanzhou 730000) state key Lab. oxo synthesis S. Lanzhou Inst. of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China

Three diphosphinites were synthesized for preparing rhodium-diphosphinite complexes. The complexes were used for asymmetric catalytic hydrogenation of amino acid precursor alpha-acetamidocinnamic acid and its methyl e...

关键词： asymmetric catalysis hydrogenation rhodium diphosphinites alpha-acetamidocinnic acid

Reaction Chemistry of W-Mn/SiO2 Catalyst for the Oxidative Coupling of Methane

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Journal of Natural Gas Chemistry 2003年第1期12卷 1-9页

作者： Shuben Listate key laboratory for oxo synthesis and selective oxidation, lanzhou institute of chemical physics, chinese academy of Sciences, lanzhou 730000, china Stt. key Lab. oxo Synth./Sel. Oxid. Lanzhou Inst. of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China

Reaction chemistry of the OCM reaction on W-Mn/SiO_2 catalyst has beenreviewed in this account. Initial activity and selectivity, stability in a long-term reaction,reaction at elevated pressures and a modelling test in a stainless-steel fluidized-bed reactor showthat W-Mn/SiO_2 has promising performance for the development of an OCM process that directlyproduces ethylene from natural gas. A study on surface catalytic reaction kinetics and used catalyststructure characterization revealed a possible reason why C_2 and CO_x selectivity changed duringthe long-term reaction. Further improvement of the catalyst composition and preparation methodshould be a future direction of study on OCM reaction over W-Mn/SiO_2 catalyst.

关键词： W-Mn/SiO_2 catalyst oxidative coupling of methane elevated pressure methane

Syntheses of Clusters Containing C2M2（M=Co,Mo）Cores and Crystal Structure of 〔dpp〕〔Mo2Cp2（CO）4〕·CH2Cl2

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chinese Journal of Structural Chemistry 1999年第4期18卷 35-40页

作者： CHEN XueNian ZHANG Jie YIN YuanQi (state key laboratory for oxo synthesis and selective oxidation,lanzhou institute of chemical physics, the chinese academy of Sciences, lanzhou 730000)ZSUN Jie (Shanghai institute of Organic Chemistry, the chinese Acad state key Lab. oxo synthesis S. Lanzhou Inst. of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China Shanghai Inst. of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China

１ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｅｘｔｅｎｓｉｖｅａｎｄｒａｐｉｄｄｅｖｅｌｏｐｍｅｎｔｏｆｔｈｅｃｈｅｍｉｓｔｒｙｏｆｄｉｎｕｃｌｅａｒｔｒａｎｓｉｔｉｏｎｍｅｔａｌｃｏｍｐｌｅｘｅｓｂｒｉｄｇｅｄｂｙｕｎｓａｔｕ...

１ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｅｘｔｅｎｓｉｖｅａｎｄｒａｐｉｄｄｅｖｅｌｏｐｍｅｎｔｏｆｔｈｅｃｈｅｍｉｓｔｒｙｏｆｄｉｎｕｃｌｅａｒｔｒａｎｓｉｔｉｏｎｍｅｔａｌｃｏｍｐｌｅｘｅｓｂｒｉｄｇｅｄｂｙｕｎｓａｔｕｒａｔｅｄｈｙｄｒｏｃａｒｂｏｎｓ...

关键词： cobalt molybdenum diyne compounds crystal structure cluster

The first observation of Mo^(5+) in the passivation layer of Mo_2N

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chinese Science Bulletin 2000年第17期45卷 1562-1564页

作者： XIE Guohuang & JIANG ZhichengStale key laboratory of oxo-synthesis and selective oxidation, lanzhou institute of chemical physics, chinese academy ofsciences, lanzhou 730000, chinaCorrespondence should he addressed to Jiang Zhicheng state key laboratory of oxo-synthesis and selective oxidation Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou China

Molybdenum nitride powder with sg of 115 m2 .............. g 1 (passivated) has been prepared by a temperature programmed reaction of MoO3 in H2/N2 mixture. It exhibited high catalytic activity in CO oxidation at low temperature. XPS, EPR and LRS studies have shown the existence of mixed valence states of Mo ions, especially Mo5+ ion (g=1.932, g =1.892) observed for the first time, in the passivation layer of molybdenum nitride. A surface superoxide species, O2 (g = 2.001, Ramanband 1 124 cm 1), was found to be produced accompanying the transformation of Mo5+/Mo4+ redox pair. Evidence has been given to suggest that this surface superoxide might be responsible for CO oxidation over Mo2N catalyst.

关键词： molybdenum nitride passivation layer Mo XPS EPR LRS.

Room Temperature Ionic Liquid: a Powerful Additive of Mn(Salen) Catalyzed oxidation of sec-Alcohols

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chinese chemical Letters 2004年第12期15卷 1437-1440页

作者： Jing Wei LI Wei SUN Li Wen XU Chun Gu XIA Hong Wang WANG state key laboratory for oxo synthesis & selective oxidation, lanzhou institute of chemical physics, chinese academy of Sicences, lanzhou 730000 state key Lab. oxo synthesis S. Lanzhou Inst. of Chemical Physics Chinese Academy of Sicences Lanzhou 730000 China

A simple, mild, efficient Mn(salen)-catalyzed oxidation system of secondaty alcohols,in which the ionic liquid [bmim]PF_6 acts as a powerful additive, has been described. The reactionproceeded with higher efficiency. The catalyst was more easier to recycle in ionic liquid[bmim]PF_6 with a well-proportioned CH_2C1_2 than in the single CH_2Cl_2 or ionic liquid.

关键词： Salen Mn ionic liquid, sec-alcohols oxidation.

Effect　of　Pressure　on　the　Gas　Phase　Reaction　of　Oxidative　Coupling　of　Methane

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分子催化 1997年第2期 6-7页

作者： LIUYu LIUXuxia SHEN Shikong (state key laboratory for oxo synthesis and selective oxidation lanzhou Instirute of chemical physics The chinese academy of Sciences lanzhou 730000)

ＥｆｅｃｔｏｆＰｒｅｓｕｒｅｏｎｔｈｅＧａｓＰｈａｓｅＲｅａｃｔｉｏｎｏｆＯｘｉｄａｔｉｖｅＣｏｕｐｌｉｎｇｏｆＭｅｔｈａｎｅ１）ＬＩＵＹｕＬＩＵＸｕｘｉａＳＨＥＮＳｈｉｋｏｎｇ（ＳｔａｔｅＫｅｙＬａｂｏｒａｔｏｒｙ...

ＥｆｅｃｔｏｆＰｒｅｓｕｒｅｏｎｔｈｅＧａｓＰｈａｓｅＲｅａｃｔｉｏｎｏｆＯｘｉｄａｔｉｖｅＣｏｕｐｌｉｎｇｏｆＭｅｔｈａｎｅ１）ＬＩＵＹｕＬＩＵＸｕｘｉａＳＨＥＮＳｈｉｋｏｎｇ（ＳｔａｔｅＫｅｙＬａｂｏｒａｔｏｒｙｆｏｒＯｘｏＳｙｎｔｈｅｓｉｓａｎ...

关键词： Oxidative coupling of methane oxidation Ethane Ethylene Elevated pressure

Enantioselective Hydrogenation of α,β-Unsaturated Cyclic Ketones by Double Asymmetric Induction Preparation of (R)-Muscone

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chinese chemical Letters 1997年第6期8卷 477-478页

作者： Bao Han XIE Shi Jie LU Hong Xiang FU Lan Yong GAO (state key laboratory for oxo Srnthesis and selective oxidation lanzhou institute of chemical physics. chinese academy of Sciences, lanzhou 730000) state key Lab. oxo synthesis/S.O. Lanzhou Inst. of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China

By ketal formation with chiral glycols like methyl or ethyl ester of tartaric acid,hydrogenation of ketals from the correspondingα,β-unsaturated 15-membered cyclic ketone produces (R)-muscone in good chemical and op... 详细信息

关键词： Unsaturated Cyclic Ketones by Double Asymmetric Induction Preparation of Muscone

Hydrogenation of CO2 over Alumina-Modified

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分子催化 1997年第4期 4-5页

作者： REN Xu KOU Yuan 1) WANG Hongli (state key laboratory for oxo synthesis and selective oxidation lanzhou institute of chemical physics The chinese academy of Sciences lanzhou 730000)

ＨｙｄｒｏｇｅｎａｔｉｏｎｏｆＣＯ２ｏｖｅｒＡｌｕｍｉｎａＭｏｄｉｆｉｅｄＺｉｒｃｏｎｉａＳｕｐｐｏｒｔｅｄＩｒｏｎＣａｔａｌｙｓｔＲＥＮＸｕＫＯＵＹｕａｎ１）ＷＡＮＧＨｏｎｇｌｉ（ＳｔａｔｅＫｅｙＬａｂｏｒａｔ...

ＨｙｄｒｏｇｅｎａｔｉｏｎｏｆＣＯ２ｏｖｅｒＡｌｕｍｉｎａＭｏｄｉｆｉｅｄＺｉｒｃｏｎｉａＳｕｐｐｏｒｔｅｄＩｒｏｎＣａｔａｌｙｓｔＲＥＮＸｕＫＯＵＹｕａｎ１）ＷＡＮＧＨｏｎｇｌｉ（ＳｔａｔｅＫｅｙＬａｂｏｒａｔｏｒｙｆｏｒＯｘｏＳｙｎｔｈｅｓｉ...

关键词： Iron catalyst Zirconia Hydrogenation of CO 2 XRD EXAFS

Studies on the Reaction Mechanism of CO_2-Reforming of Methane over Co/γ-Al_2O_3 Catalyst

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chinese chemical Letters 1997年第2期8卷 121-124页

作者： Yong LU Chang Chun YU Jin Zhen XUE Yu LIU Xue Jia DING and Shi Kong SHEN(state key laboratory of oxo synthesis and selective oxidation,lanzhou institute of chemical physics,chinese academy of Sciences. lanzhou 730000) state key Lab. oxo synthesis/S. O. Lanzhou Inst. of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China

TPPR and XPS characterizations were combined to study the reaction mechanism of CO2reforming of methane to syngas over Co/γ-Al2O3 catalysts. CH4 shows a tendency to form surface carbons by deep dissociation at high temperatures. CO2 dissociation reaction also occurs at >673K. It is believed that carbide carbons are active species to generate CO by rcacting with o atoms dissociated from CO2. In the reaction,Co(0) particles are responsible for dissociating CH4 to form active C. abstracting an O atom from CO2 molecule, and transferring O atom to C to form CO.

关键词： over CO Al2O3 Catalyst Studies on the Reaction Mechanism of CO2-Reforming of Methane over Co