Heterogeneous Supported Catalysts for Butadiene Polymerization: The Effect of Calcination Temperature and Solvent

Hussain, Syed Tajammul; Naheed, Rafia; Badshah, Amin; Saddique, Muhammad Tahir; Khalid, Mohamed; Baig, Zafar Iqbal

doi:10.2174/1876214x01003010001

Cited by 2 publications

(3 citation statements)

References 45 publications

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“…The solvent media used for the BD polymerization is also an important factor for the product yield and stereospecificity of the obtained BR product . Many solvents are applied in the BD polymerization such as aliphatic, cycloaliphatic, and aromatic hydrocarbons.…”

Section: Resultsmentioning

confidence: 99%

The influence of Ni/Nd‐based Ziegler–Natta catalyst on microstructure configurations and properties of butadiene rubber

Chatarsa

Prasassarakich

Rempel

et al. 2015

J of Applied Polymer Sci

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Neodymium (Nd)-based Ziegler-Natta catalyst has been well known for preparing polybutadiene rubber (BR) containing high, about 98%, cis21,4 configuration with extremely low gel content providing superior resistance to low-temperature fatigue and abrasion. However, its cost is more expensive than a conventional nickel (Ni)-based catalyst. The Nd-BR has poor processability with high cold flow due to its high linearity and molecular weight. To compare with a traditional process, the BR produced by Ni-based catalyst has higher level of branching resulting in the better processability, but it contains medium amount of gel. To balance the catalyst cost and the BR properties, this article reported the influence of a solution containing Ni-and Nd-based Ziegler-Natta catalyst (Ni/Nd) using diethyl aluminum chloride and triethyl aluminum as co-catalysts on 1,3-butadiene (BD) conversion and physical properties of the elastomeric materials based on obtained rubber (Ni/Nd-BR). In the presence of toluene, the increase in the Ni/Nd molar ratio from 0.0/1.0 to 0.4/0.6 yielded Ni/Nd-BR containing cis21,4 units of 95%-96% with significantly decreasing both levels of vinyl21,2 and trans21,4 configurations from 0.26% to 0.13% and 4.44% to 3.07%, respectively. When cyclohexane was applied as the reaction media, 100% BD conversion was achieved and the Ni/Nd-BR had very low content of vinyl21,2 unit (0.07%). The mechanical properties in terms of tensile properties and abrasion resistance of the elastomer based on Ni/Nd-BR having high cis-1,4 and relatively higher trans21,4 configurations were superior to elastomers based on commercial BRs produced by using Niand Nd-based catalyst systems.

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Section: Resultsmentioning

confidence: 99%

The influence of Ni/Nd‐based Ziegler–Natta catalyst on microstructure configurations and properties of butadiene rubber

Chatarsa

Prasassarakich

Rempel

et al. 2015

J of Applied Polymer Sci

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“…A heterogeneous cobalt-nickel (oxide) bimetallic catalyst for the polymerization of butadiene was subjected to calcination at different temperatures, which results in the formation of different phases with multiple oxidation states [68,69]. SEM micrographs of the fresh samples, calcined at different temperatures, are presented in Figure 8 (a, c, e).…”

Section: Scheme 5: the Synthesis Of The Msn-supported Salicylaldimine Cobalt Complexmentioning

confidence: 99%

“…In products selectivity are mainly responsible the catalytic reaction conditions, the calcinations temperatures, which control the oxidation state, phase and stability of the catalyst. No effect of pressure and temperature were observed on the product distribution [68,69].…”

Section: Scheme 5: the Synthesis Of The Msn-supported Salicylaldimine Cobalt Complexmentioning

confidence: 99%

Nanocatalysts in Olefins and Dienes Polymerization Processes

Nasirov¹

2021

J Mater Sci Manufac Res

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Sustainable development, the design of green and economically feasible processes to produce synthetic polymers is one of the major needs and biggest challenges. Catalysis of polymerization processes is among the most important applications within the field of nanoscience. Intensive research is being conducted and considerable success has been achieved in the heterogenization of various homogeneous catalysts on nano supports for polymerization of olefins and dienes. The large surface area of various nanomaterials qualifies them quite naturally to act either as a heterogeneous promoter for catalytic reactions or as a support for the heterogenization of homogeneous catalysts. To the polymerization of olefins and dienes by using nanocatalysts are devoted significant numbers of published papers, but to elucidate the possible effect of both the type and properties of nano supports and their sizes and amounts on the activity and stereoselectivity of heterogenized catalysts and the properties of the obtained polymers are needed more detailed studies. This review attempted to collect some published research materials in the field of the nanocatalysis of olefins and dienes polymerization processes and our main aim is to assess the critical points and to indicate the future perspectives and possible strategies in this area of research. We are confident that this review will be a helpful companion and deliver key hints to those, in academia and in the industry, who decide to move their research interest in this direction

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Heterogeneous Supported Catalysts for Butadiene Polymerization: The Effect of Calcination Temperature and Solvent

Cited by 2 publications

References 45 publications

The influence of Ni/Nd‐based Ziegler–Natta catalyst on microstructure configurations and properties of butadiene rubber

The influence of Ni/Nd‐based Ziegler–Natta catalyst on microstructure configurations and properties of butadiene rubber

Nanocatalysts in Olefins and Dienes Polymerization Processes

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