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Bimetallic Catalyst

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Tiancun Xiao – One of the best experts on this subject based on the ideXlab platform.

  • catalytic performance of pd ni Bimetallic Catalyst for glycerol hydrogenolysis
    Biomass & Bioenergy, 2015
    Co-Authors: Tao Jiang, Qiang Huai, Tong Geng, Weiyong Ying, Tiancun Xiao

    Abstract:

    Abstract Catalytic conversion of glycerol from biodiesel production to value-added chemicals and fuels is actually of great interest for industrial chemical research. Bimetallic Catalysts are confirmed superior to monometallic Catalysts in terms of catalytic activity and selectivity for glycerol hydrogenolysis. Accordingly, a series of Pd–M (M = Fe, Co, Ni, Cu, Zn) Bimetallic Catalysts were prepared in this work via coprecipitation to investigate the promoting effect of Pd. The relationship between the catalytic performance and metal-support interaction was also discussed. Through the Catalyst screening, Pd–Ni Bimetallic Catalyst exhibited moderate activity and the highest selectivity towards ethylene glycol. At 493 K and hydrogen pressure of 6.0 MPa, the glycerol conversion and selectivity of ethylene glycol reached 89% and 22% respectively. XRD and TEM patterns showed that the Pd nanoparticles with an average size of ∼4 nm were uniformly dispersed in the supports. H 2 -TPR revealed that the reduction temperatures of metal oxides were significantly decreased by the introduction of Pd component. XPS curves indicated that unique performance of the Pd–Ni Bimetallic Catalyst might be attributed to the formation of Pd–Ni alloy. And the required metal-support interaction was assumed responsible for the cleavage of C–C bond and generation of ethylene glycol. In the end, hydrogenolysis reactions for the main products of glycerol conversion were carried out over Pd–Ni Catalyst to explore the possible reaction pathways for glycerol hydrogenolysis.

  • hydrogen generation from liquid reforming of glycerin over ni co Bimetallic Catalyst
    Biomass & Bioenergy, 2010
    Co-Authors: Kun Ouyang, Tiancun Xiao

    Abstract:

    Abstract Glycerin is a low cost renewable byproduct of the biodiesel industry, and can be reformed into hydrogen. Here we describe the development of cerium promoted nickel cobalt Catalysts on alumina supports for the liquid phase reforming of aqueous glycerine in subcritical water. The Bimetallic Ni–Co Catalyst was prepared using the urea matrix combustion method over a wide range of compositions both with and without cerium. TPR profiles indicated a synergism between the metals, however, the Catalysts deactivated due to carbon deposition as plaques, and in some compositions due to sintering. Cerium (2Ce–Ni1Co3) suppressed sintering and lowered methane selectivity by comparison with Ni1Co3 alone.

Baldev Singh – One of the best experts on this subject based on the ideXlab platform.

  • ligand free c n bond formation in aqueous medium using a reusable cu mn Bimetallic Catalyst
    Tetrahedron Letters, 2013
    Co-Authors: Sanghapal D Sawant, M Srinivas, K Aravinda A Kumar, Lakshma G Reddy, Parvinder Pal Singh, Baldev Singh

    Abstract:

    Abstract A general ligand-free protocol has been described for the recyclable and reusable Cu–Mn catalyzed C–N bond forming cross coupling reaction of arylboronic acids with various amines to form N-arylated amine products in aqueous medium affording excellent yields under ambient conditions, in 3–4 h.

  • cu mn Bimetallic Catalyst for huisgen 3 2 cycloaddition
    ChemInform, 2011
    Co-Authors: Syed Khalid Yousuf, Debaraj Mukherjee, Baldev Singh, Sudip Maity, Subhash C Taneja

    Abstract:

    Cu-Mn spinel oxide is found to be a robust and recyclable Catalyst for the azide-alkyne cycloaddition reaction both in solution phase and solvent-free microwave irradiation conditions.

  • cu mn Bimetallic Catalyst for huisgen 3 2 cycloaddition
    Green Chemistry, 2010
    Co-Authors: Syed Khalid Yousuf, Debaraj Mukherjee, Baldev Singh, Sudip Maity, Subhash C Taneja

    Abstract:

    Cu–Mn spinel oxide Catalyst has been investigated for the ligand-free Huisgen [3+2] cycloaddition. The copper(I) species required in the cycloaddition reaction has been stabilized in the tetrahedral site of the spinel without the need of a stabilizing agent. The new Catalyst is robust and can be reused several times under MW conditions with negligible loss in catalytic activity.

Subhash C Taneja – One of the best experts on this subject based on the ideXlab platform.

  • cu mn Bimetallic Catalyst for huisgen 3 2 cycloaddition
    ChemInform, 2011
    Co-Authors: Syed Khalid Yousuf, Debaraj Mukherjee, Baldev Singh, Sudip Maity, Subhash C Taneja

    Abstract:

    Cu-Mn spinel oxide is found to be a robust and recyclable Catalyst for the azide-alkyne cycloaddition reaction both in solution phase and solvent-free microwave irradiation conditions.

  • cu mn Bimetallic Catalyst for huisgen 3 2 cycloaddition
    Green Chemistry, 2010
    Co-Authors: Syed Khalid Yousuf, Debaraj Mukherjee, Baldev Singh, Sudip Maity, Subhash C Taneja

    Abstract:

    Cu–Mn spinel oxide Catalyst has been investigated for the ligand-free Huisgen [3+2] cycloaddition. The copper(I) species required in the cycloaddition reaction has been stabilized in the tetrahedral site of the spinel without the need of a stabilizing agent. The new Catalyst is robust and can be reused several times under MW conditions with negligible loss in catalytic activity.