Alkylation of benzene with ethylene in the presence of dimethyldichlorosilane

Гущин, П. А.; Колесников, И. М.; Винокуров, В. А.; Иванов, Е. В.; Lyubimenko, V. A.; Borshch, V. N.

doi:10.1016/j.jcat.2017.05.004

Cited by 18 publications

(6 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Styrene, an essential organic monomer in the petrochemical industry, is widely used in the production of polystyrene (PS), styrene-butadiene rubber (SBR), and acrylonitrile-butadiene-styrene copolymer (ABS resin). − As a main raw material for styrene, more than 90% of ethylbenzene was produced by the alkylation of benzene with ethylene. Gas-phase alkylation of benzene with ethylene to produce ethylbenzene is environmentally friendly, requires a relatively low investment in catalyst and equipment, and operates with high yield and low energy consumption.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Fe-Substituted ZSM-5 Zeolite and Its Catalytic Performance for Alkylation of Benzene with Dilute Ethylene

Bian

Zhang

Yang

et al. 2020

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

A series of Fe-substituted ZSM-5 zeolite samples with an almost constant Si/(Fe + Al) molar ratio of 50 but varied levels of Fe substitution were synthesized via an in situ seed-induced hydrothermal method in a fluoride medium. Additionally, a hierarchical Fe-substituted sample with high diffusion capability was also produced by a subsequent alkaline treatment. The textural and acidic properties of these samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV−Raman, Fourier transform infrared (FT-IR), UV−vis, H 2 -temperature programmed reduction (TPR), Ar adsorption−desorption, NH 3 -temperature-programmed desorption (TPD), X-ray fluorescence (XRF), 27 Al, and 29 Si magicangle spinning (MAS) NMR analysis. These analyses revealed that Fe 3+ species were effectively integrated into the MFI framework of the Fe-substituted samples. The as-synthesized samples displayed orthogonally intergrown crystal plates of increased aspect ratios with increased Fe-substitutions. More significantly, the resulted Fe-substituted samples displayed a noticeably reduced acid strength compared to the pure ZSM-5. Evaluated by the benzene alkylation reaction with dilute ethylene, the 50% partially Fe-substituted ZSM-5 sample showed a combined high ethyl selectivity and long catalytic lifetime among all catalysts studied, which is attributed to its suitably balanced acid strength.

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Fe-Substituted ZSM-5 Zeolite and Its Catalytic Performance for Alkylation of Benzene with Dilute Ethylene

Bian

Zhang

Yang

et al. 2020

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…For this reason, one of the approaches is the conversion of furan into benzene with further alkylation with biobased ethylene through conventional Friedel Crafts process. 651 This inevitably implies the decarboxylation of furfural into furan which can be carried out using metal oxides in the vapor phase. 652 Each reaction step has been studied separately in literature and an overall implementation of the process seems achievable.…”

Section: Ethyl Benzenementioning

confidence: 99%

Bioderived furanic compounds as replacements for BTX in chemical intermediate applications

Ghatta

Hallett

2023

RSC Sustain.

View full text Add to dashboard Cite

show abstract

“…Aromatics are essential organic raw materials widely utilized in various industries, such as chemical production and medical treatment. – Ethylbenzene, in particular, is a crucial product, primarily used in the manufacturing of styrene, styrene homopolymers, and copolymers such as ABS (acrylonitrile–butadiene–styrene copolymer) and AS (acrylonitrile–styrene resins), which are widely utilized in pharmaceuticals, textiles, and other industries. , However, the traditional method for producing ethylbenzene is a two-step process that involves cracking naphtha to produce ethylene, which is then alkylated with benzene. – With an increasing demand in the ethylbenzene market, ethylene supply is far below the demand, and the gap is still increasing. – Moreover, this process has drawbacks such as high energy consumption, easy deactivation of catalysts, and high CO 2 emissions, which greatly limit the development of traditional ethylene processes. – …”

Section: Introductionmentioning

confidence: 99%

Direct and Highly Selective One-Step Production of Ethylbenzene from Syngas and Benzene

Zhao,

Ma,

et al. 2023

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Due to cost and energy consumption constraints, converting benzene into ethylbenzene using low-cost syngas instead of ethylene as an alkylation reagent is significant. However, when using syngas as the reaction raw material, generating ethylated side chains on the benzene ring is challenging. Instead, toluene/xylene becomes the primary product. We used a three-bed series connection method in a reactor, achieving one-step high selectivity of syngas and benzene to produce ethylbenzene. In the first bed layer (ZnAl2O4/SAPO-34), the syngas was first converted into methanol/dimethyl ether (DME) on ZnAl2O4. Then, it was further converted into low-carbon olefins on SAPO-34, with the microporous shape-selective effect of SAPO-34, inhibiting the generation of toluene/xylene in the alkylation of benzene with methanol/DME. At the same time, we proved that the absence of microporous shape-selective effect acid sites on the outer surface of S34 can lead to the occurrence of side reactions of benzene and methanol/DME methylation. In the second bed layer, SAPO-34 could continue to convert unconverted methanol/DME in the first bed layer into low-carbon olefins. In the third layer (ZSM-5), ethylene and benzene underwent highly selective alkylation on ZSM-5 to convert it into ethylbenzene. We found a “volcanic” curve relationship between the selectivity of ethylbenzene and the Brønsted acid site density of ZSM-5. On the one hand, Brønsted acid could catalyze the formation of ethylbenzene from benzene and ethylene; On the other hand, excessive Brønsted acid could lead to the isomerization of ethylbenzene to toluene/xylene. When the Brønsted acid showed a site density of 0.7 mmol/g, the selectivity of ethylbenzene was as high as 87%, with a byproduct of xylene showing only 0.3%, which is usually difficult to separate from ethylbenzene. Finally, the three-bed catalytic system showed no deactivation after 100 h.

show abstract

Alkylation of benzene with ethylene in the presence of dimethyldichlorosilane

Cited by 18 publications

References 16 publications

Synthesis and Characterization of Fe-Substituted ZSM-5 Zeolite and Its Catalytic Performance for Alkylation of Benzene with Dilute Ethylene

Synthesis and Characterization of Fe-Substituted ZSM-5 Zeolite and Its Catalytic Performance for Alkylation of Benzene with Dilute Ethylene

Bioderived furanic compounds as replacements for BTX in chemical intermediate applications

Direct and Highly Selective One-Step Production of Ethylbenzene from Syngas and Benzene

Contact Info

Product

Resources

About