Use of a cross-linked polystyrene/titanium tetrachloride tightly bound coordination complex as catalyst for the production of petroleum resins

Rahmatpour, Ali; Soleimani, Parvaneh; Karamian, Soroush; Dadvand, Razieh

doi:10.1039/d2re00429a

Cited by 3 publications

(1 citation statement)

References 58 publications

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“…Catalytic co-oligomerization of C5/C9 using a heterogeneous catalyst -divinylbenzene-crosslinked polystyrene/titanium tetrachloride (DVB-PS/TiCl 4 ) is considered in [9]. The catalyst used is characterized by hardness and a developed inner surface.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Preparation of hydrocarbon resins by suspension oligomerisation of the C9 fraction of gasoline pyrolysis initiated by amino peroxides

Subtelnyy,

Zhuravskyi,

Dzinyak

2023

EEJET

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The object of research is the production of C9 hydrocarbon resins by oligomerization of oil refining by-products. In the technology of hydrocarbon resins by free radical oligomerization, there is a disadvantage in the use of high temperatures and a long reaction time. The resulting products have a dark color, which limits their use in paints and varnishes. The technology of hydrocarbon resins, which consists in the suspension oligomerization of hydrocarbons of the C9 fraction in an aqueous medium, at low temperatures and stirring, was studied. N-substituted amino peroxides, which are characterized by a low temperature of use, were used as initiators. The raw materials used were C9 fractions of liquid gasoline pyrolysis products with an unsaturated compound content of 54.7 %. The optimal conditions were established: temperature – 364 K, time – 180 min, Re=10120, initiator concentration – 0.064 mol/l, the share of C9 fraction in the reaction mixture – 25 %. Under these conditions, a light hydrocarbon resin with a color index of 20 mg I2/100 ml and a softening point of 352 K was obtained. The use of amino peroxide initiators allows for the suspension oligomerization of the hydrocarbon fraction C9 at low temperatures (303–353 K) and within a short reaction time (180 min). This oligomerization technology makes it easy to remove excess heat and maintain isothermal conditions in the reaction zone. This prevents the development of side oxidation reactions that cause darkening of the product. The research results make it possible to improve the process of oligomerization of the hydrocarbon fraction using new initiators and obtain light-colored hydrocarbon resins. This will reduce energy costs for production and improve the characteristics of hydrocarbon resins

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Preparation of hydrocarbon resins by suspension oligomerisation of the C9 fraction of gasoline pyrolysis initiated by amino peroxides

Subtelnyy,

Zhuravskyi,

Dzinyak

2023

EEJET

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Temperature effect on tension formation in styrene–divinylbenzene copolymers

Bykov,

Demidenko,

Stepacheva

et al. 2024

Polymer International

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Crosslinked polymers are considered to be promising materials for supporting catalysts that are effectively applied in different reactions. However, the application of polymer‐supported catalysts in high‐temperature processes is limited by their temperature stability. Besides thermal degradation, temperature changes can cause the restructuring of the polymer network because of changes in the valence angles and bond lengths. Thus, the study of the influence of temperature on the structure of crosslinked styrene–divinylbenzene (StDVB) copolymers is an important task. In this work, for the first time, the temperature effect limitations on StDVB copolymers are studied and justified. The changes in the polymer structure tension as well as in the specific surface area are studied using molecular dynamics simulation in the temperature range 77–723 K. Near‐cryogenic temperatures are not found to affect significantly the specific surface area. The heating of the polymer up to the temperature used for the reduction of catalysts (573 K) is shown to decrease the specific surface area by 11% because of an increase in the bond tension and valence angle deformation. Further increase in temperature leads to polymer decomposition. The results obtained can be considered for taking into account when applying polymer‐supported catalysts. © 2024 Society of Chemical Industry.

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Synthesis and characterization of Nickel Aluminate-innovative a green path with solid acid catalyst for solvent free acylation reaction

Thandapani

et al. 2024

2024 Third International Conference on Smart Technologies and Systems for Next Generation Computing (ICSTSN)

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Use of a cross-linked polystyrene/titanium tetrachloride tightly bound coordination complex as catalyst for the production of petroleum resins

Abstract: Immobilized titanium tetrachloride containing was demonstrated to be an effective and water-tolerant solid acid cationic initiator for the cationic polymerization of an industrial liquid pyrolysis gasoline feedstock.

Cited by 3 publications

References 58 publications

Preparation of hydrocarbon resins by suspension oligomerisation of the C9 fraction of gasoline pyrolysis initiated by amino peroxides

Preparation of hydrocarbon resins by suspension oligomerisation of the C9 fraction of gasoline pyrolysis initiated by amino peroxides

Temperature effect on tension formation in styrene–divinylbenzene copolymers

Synthesis and characterization of Nickel Aluminate-innovative a green path with solid acid catalyst for solvent free acylation reaction

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