Addition of a second alcohol in magnesium ethoxide synthesis as a way to vary the pore architecture of Ziegler-Natta catalysts [PDF]
Polyolefins Journal, 2015 In Ziegler-Natta olefin polymerization, the pore architecture of catalysts plays a crucial role in catalytic performances and polymer properties. While the type of preparation routes (such as chemical reaction and solution precipitation) greatly affects ...
Toshiaki Funako +3 more
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A Mathematical Model for Investigating the Effect of Reaction Temperature and Hydrogen Amount on the Catalyst Yield during Propylene Polymerization [PDF]
Kemija u Industriji, 2019 In this study, the effect of reaction temperature and hydrogen amount, as the most effective process variables on the Ziegler-Natta catalysts yield during propylene polymerization, was investigated with the aid of a validated mathematical model.
Gholam Hossain Varshouee +3 more
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ChemistryOpen, 2020 In this work, different types of polyethylene (linear, spiral nanofibers and microspheres) were obtained via confined polymerization by a PPM‐supported Ziegler‐Natta catalyst.
Dr. Yu Xiao +3 more
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Catalysts for selective hydrogenation of acetylene: A review
Materials Today Catalysis, 2023 Ethylene is a crucial industrial feedstock in the petrochemical sector. However, the presence of a small amount of acetylene impurities in ethylene products will directly affect the next application of ethylene.
Kefeng Xie +5 more
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Validation of BET Specific Surface Area for Heterogeneous Ziegler-Natta Catalysts based on α_S-plot [PDF]
, 2012 Specific surface area based on the BET method in N_2 adsorption has historically posed poor correlation with olefin polymerization activity of heterogeneous Ziegler-Natta (ZN) catalysts.
Taniike, Toshiaki +4 more
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Structure-Performance Relationship in Ziegler-Natta Olefin Polymerization with Novel Core-Shell MgO/MgCl_2/TiCl_4 Catalysts [PDF]
, 2012 The impact of support architectures on the olefin polymerization performance of heterogeneous Ziegler–Natta catalysts has been scarcely understood due to the complexity of pore system and the fragmentation-induced structural changes during polymerization.
Taniike, Toshiaki +2 more
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System Identification for Experimental Study for Polymerization Catalyst Reaction in Fluidized Bed [PDF]
, 2011 In this work, system identification method is used to capture the reactor characteristics of production rate of polyethylene (PE) based on published experimental data. The identification method is used to measure the percentage effect on the production
Ahmmed S. Ibrehem, Ibrehem, A. S.
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, 2021 Despite decades of extensive studies, the atomic-scale structure of the active sites in heterogeneous Ziegler-Natta (ZN) catalysts, one of the most important processes of the chemical industry, remains elusive and a matter of debate. In the present work,
Anne, Lesage +12 more
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MgO/MgCl_2/TiCl_4 Core-Shell Catalyst for Establishing Structure-Performance Relationship in Ziegler-Natta Olefin Polymerization [PDF]
, 2014 Recently we successfully established the first structure-performance relationships between the catalyst surface area and propylene polymerization activity using novel MgO/MgC_l2/TiCl_4 core-shell catalysts with non-porous and non-fragmentable features ...
Taniike, Toshiaki +3 more
core +1 more source
Effects of Ti oxidation state on ethylene, 1-hexene comonomer polymerization by MgCl_2-supported Ziegler–Natta catalysts [PDF]
, 2011 In this work, the influences of the Ti oxidation state on the catalytic properties of MgCl_2-supported Ziegler–Natta catalysts in ethylene homo- and co-polymerization with 1-hexene. Three catalysts having different Ti oxidation states were synthesized by
Taniike, Toshiaki +9 more
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