Search | Engineering

Subscribe Submit

Home Journals Focus Achievement Fronts About Us 中文版

Resource Type

Journal Article 4

Year

2023 1

2020 1

2012 1

2010 1

Keywords

ethylbenzene 2

MOFs 1

TiO-AlOmixed 1

active sites 1

adsorption 1

alkylation 1

carbon materials 1

catalysts pellet model 1

catalytic performance 1

dehydrogenation 1

desorption 1

different 1

ethylbenzene and xylene isomers (TEX) 1

kinetic model 1

mechanism 1

multi-walled carbon nanotube 1

physisorption 1

sensitivity analysis 1

support 1

surface oxidation 1

open ︾

Search scope:

排序： Display mode:

Effect of TiO 2 loading on the activity of V/TiO 2 -Al 2 O 3 in the catalytic oxidehydrogenation of ethylbenzene

Xiaohong LI, Wenying LI,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 2, Pages 142-146 doi: 10.1007/s11705-009-0233-2

Abstract: crystal structure, texture characteristic, acid property, and catalytic activity in dehydrogenation of ethylbenzene

Keywords： desorption different TiO-AlOmixed physisorption ethylbenzene

HTML PDF Collect

Adsorption of toluene, ethylbenzene and xylene isomers on multi-walled carbon nanotubes oxidized by different

Fei YU, Jie MA, Yanqing WU

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 3, Pages 320-329 doi: 10.1007/s11783-011-0340-4

Abstract: were employed as adsorbents to study their characterizations and adsorption performance of toluene, ethylbenzene

Keywords： adsorption toluene ethylbenzene and xylene isomers (TEX) multi-walled carbon nanotube surface oxidation

HTML PDF Collect

Insights into carbon-based materials for catalytic dehydrogenation of low-carbon alkanes and ethylbenzene

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11, Pages 1623-1648 doi: 10.1007/s11705-023-2328-6

Abstract: Direct dehydrogenation with high selectivity and oxidative dehydrogenation with low thermal limit has been regarded as promising methods to solve the increasing demands of light olefins and styrene. Metal-based catalysts have shown remarkable performance for these reactions, such as Pt, CrO_x, Co, ZrO_x, Zn and V. Compared with metal-based catalysts, carbon materials with stable structure, rich pore texture and large surface area, are ideal platforms as the catalysts and the supports for dehydrogenation reactions. In this review, carbon materials applied in direct dehydrogenation and oxidative dehydrogenation reactions including ordered mesoporous carbon, carbon nanodiamond, carbon nanotubes, graphene and activated carbon, are summarized. A general introduction to the dehydrogenation mechanism and active sites of carbon catalysts is briefly presented to provide a deep understanding of the carbon-based materials used in dehydrogenation reactions. The unique structure of each carbon material is presented, and the diversified synthesis methods of carbon catalysts are clarified. The approaches for promoting the catalytic activity of carbon catalysts are elaborated with respect to preparation method optimization, suitable structure design and heteroatom doping. The regeneration mechanism of carbon-based catalysts is discussed for providing guidance on catalytic performance enhancement. In addition, carbon materials as the support of metal-based catalysts contribute to exploiting the excellent catalytic performance of catalysts due to superior structural characteristics. In the end, the challenges in current research and strategies for future improvements are proposed.

Keywords： carbon materials dehydrogenation active sites mechanism catalytic performance support

HTML PDF Collect

Catalytic process modeling and sensitivity analysis of alkylation of benzene with ethanol over MIL-101(Fe) and MIL-88(Fe)

Ehsan Rahmani, Mohammad Rahmani

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 6, Pages 1100-1111 doi: 10.1007/s11705-019-1891-3

Abstract: A solvothermal method was used to synthesize MIL-101(Fe) and MIL-88(Fe), which were used for alkylation of benzene. The synthesized catalysts were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, field emission scanning electron microscope, dynamic light scattering, and BET techniques. Metal-organic frameworks (MOFs) were modeled to investigate the catalytic performance and existence of mass transfer limitations. Calculated effectiveness factors revealed absence of internal and external mass transfer. Sensitivity analysis revealed best operating conditions over MIL-101 at 120°C and 5 bar and over MIL-88 at 142°C and 9 bar.

Keywords： MOFs alkylation ethylbenzene catalysts pellet model kinetic model sensitivity analysis