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synthesis and Structural Characterization of a Ruthenium Complex:trans-RuCl_2(COD)Py_2

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Chinese Journal of Structural Chemistry 2008年第5期27卷 565-569页

作者：王芳刘俊华殷元骐徐贤伦 state key laboratory for oxo synthesis and selective oxidation Lanzhou Institute of Chemical Physics The Chinese Academy of Sciences

A new ruthenium complex trans-RuCl2（COD）Py2 has been synthesized and characterized by elemental analysis, IR, IH NMR and single-crystal X-ray diffraction. Crystal data： trans- RuCl2（COD）Py2, Mr = 438.35, monoclinic, space group P21/c, a = 8.9116（9）, b = 14.6175（15）, c = 13.7582（14）A, β = 101.994（1）°, V= 1753.1（3）A^3, Z= 4, Dc= 1.661 g/cm^3, F（000）= 888,μ = 1.199 mm^-1, R = 0.0376 and wR = 0.0789 for 2492 observed reflections with I 〉 2σ（I）.

关键词： ruthenium complex X-ray diffraction crystal

A Novel Bimetallic Tetrahedron Cobalt Complex Promoting the Addition of Diethylzinc to Benzaldehyde

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Chinese Chemical Letters 2001年第5期12卷 461-464页

作者： Wei Qiang ZHANG Zhi CHEN Yu Hua ZHANG Xin Yi ZHU Yu Gang CHEN Huan Wang JING Yuan Qi YIN state key laboratory for oxo synthesis and selective oxidation Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000

Our recent work found a novel bimetallic tetrahedron cobalt complex which can catalyze the addition of diethylzinc to benzaldehyde effectively.

关键词： Catalyzed addition cobalt complex diethylzinc benzaldehyde

Enantioselective Alternating Copolymerization of Propylene with Carbon Monoxide Using Cationic Palladium-Chiral Diphosphine Catalyst

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Chinese Chemical Letters 2001年第6期12卷 519-522页

作者： Jian Chao YUAN Yu Hua ZHANG Shi Jie LU state key laboratory for oxo synthesis and selective oxidation Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000

Enantioselective alternating copolymerization of carbon monoxide with propylene was carried out using palladium catalyst modified by 1,4-3,6-dianhydro-2,5-dideoxy-2,5-bis (diphenylphosphino)-L-iditol (DDPPI). The chiral diphosphine was proved to be effective at enantioselective copolymerization. Optical rotation, elemental analysis, H-1, C-13-NMR and IR spectra showed that the copolymer was optically active, isotactic, alternating poly(1,4-ketone) structure.

关键词： Palladium catalyst chiral ligand enantioselective alternating copolymerization isotactic copolymer optical activity

synthesis of Mesoporous Silica and Ti-containing Molecular Sieves via A Novel Assembly

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Chinese Chemical Letters 2001年第8期12卷 737-740页

作者： Jing XIN Ji Shuan SUO Xiao Ming ZHANG state key laboratory for oxo synthesis and selective oxidation Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000

Thermally stable mesoporous silica and Ti-containing molecular sieves have been synthesized at mild temperature using low-cost and biodegradable --- amphoteric tetradecyl betaine as template. The physicochemical chara... 详细信息

关键词： synthesis meosoporous silica and Ti-containing molecular sieves amphoteric tetradecyl betaine novel assembly.

Attempt to Resolute Chiral Clusters by Optically Active Hydrazide

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Chinese Chemical Letters 2001年第1期12卷 69-70页

作者： Yu Hua ZHANG Wei Qiang ZHANG Yu Gang CHEN Zhi CHEN Xin Yi ZHU Huan Wang JING Yuan Qi YIN state key laboratory for oxo synthesis and selective oxidation Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000

A new kind of hydrazone (I) diastereoisomers was prepared with enantiomeric hydazide (II) and chiral cluster (III), which was characterized by HMBC. Unfortunately, the mixture could not be separated into pure diastere... 详细信息

关键词： Chiral clusters optically active hydrazone chiral resolution diastereoisomer HMBC.

Stabilization of Cu/ZnO Based Catalysts by Nickel Additive in Methanol Decomposition

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Chemical Research in Chinese Universities 2001年第4期17卷 420-425页

作者： XI Jing-yu WANG Zhi-fei LU Gong-xuan state key laboratory for oxo synthesis and selective oxidation Lanzhou Institute of Chemical PhysicsThe Chinese Academy of SciencesLanzhou 730000P.R.China

A series of Cu/Zn based catalysts with and without Ni, prepared by the co-precipitation method, has been studied for methanol decomposition. CO and H2 are the major products. The Cu/Zn catalysts show a low initial activity and a poor stability. The formation of the CuZn alloys was observed in the deactivated Cu/Zn catalysts which were used for methanol decomposition at 250 . When small amounts of Ni were added in the catalyst, the Cu/Zn/Ni(molar ratio 5/4/ x) catalysts showed a high activity at a low temperature. The activity and the stability of the catalyst depend on the nickel content. The activity of the Cu/Zn/Ni catalysts was maintained at a. relatively stable value of 78% conversion of methanol with 95% selectivity of H2, 93% selectivity of CO, and a more than 70% yield of hydrogen was obtained at 250 C when x >1. The stability of the Cu/Zn/Ni (molar ratio 5/4/x) catalysts showed the maximum (ca 88%) when x=1. The stabilization effect of nickel on the Cu/Zn based catalysts may lead to the increasing of the dispersion of active Cu species and the prevention of CuZn alloys formation.

关键词： Nickel Cu/Zn catalysts Stabilization Methanol Decomposition

Towards Economic and Sustainable Amination with Green and Renewable Feedstocks

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Chinese Journal of Chemistry 2021年第5期39卷 1051-1069页

作者： Hongli Wang Feng Shi state key laboratory for oxo synthesis and selective oxidation Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhouGansu 730000China

The synthesis of N-substituted amines is one of the key transformations in synthetic chemistry and chemical industry,because amines are ubiquitous in the syntheses of agrochemicals,pharmaceuticals,flavorings,fragrances,and advanced *** order to realize the clean and economic synthe-sis of N-substituted amines,several asperts should be concerned.1)The application of alkyl halides as alkylation reagents should be replaced by alcohol and alkane;2)the employment of amines as nitrogen sources can be replaced by nitrobenzene,nitrile and ammonia;3)the application of environmentally benign and low-cost starting materials,such as C0_(2),HCHO,biomass resources,for the nitrogen-containing chemicals synthesis should be established;and 4)economic,green and efficient catalyst should be developed for the above *** this account,we describe our results in the clean and economic synthesis of N-substituted amines with amine,ammonia,nitrobenzene or nitrile as nitrogen sources and alcohol,alkane or C0_(2),HCHO,CO,and biomass resources as alkylation or carbonylation reagents.

关键词： C一N bond formation Amination Alcohols Ci molecules utilization Biomass conversion

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.

Salen-Mn(III)-Complex-Catalyzed oxidations of Secondary Alcohols

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Chinese Journal of Chemistry 2003年第9期21卷 1206-1209页

作者：孙伟夏春谷 state key laboratory for oxo synthesis & selective oxidation Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou Gansu 730000 China

Secondary alcohols were catalytically oxidized with diacetoxyiodobenzene as oxidant in the presence of salen- Mn(III) complex to afford the corresponding ketones, in up to 99% yield, using CH 2Cl 2 or water as reac... 详细信息

关键词： salen-Mn(III) complex oxidation secondary alcohol phase transfer catalyst