Ethylene polymerization over TiSSP composite-supported MAO with bis[N-(3-tert-butylsalicylidene) cycloheptylamine] titanium dichloride complex

Janlamool, Jakrapan; Khaubunsongserm, Supaporn; Jongsomjit, Bunjerd

doi:10.1007/s13726-017-0563-8

Cited by 2 publications

(3 citation statements)

References 31 publications

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“…The addition of TiO 2 significantly reduced the yield of CO and increased the selectivity of CH 4 substantially, indicating that TiO 2 can effectively inhibit the reverse water-gas conversion reaction. This was compatible with the findings of Janlamool et al [40] The effect of the amount of TiO 2 on CH 4 selectivity was not significant.…”

Section: Xps Resultssupporting

confidence: 93%

Promotion Effect of TiO₂ on Ni/SiO₂ Catalysts Prepared by Hydrothermal Method for CO₂ Methanation

Zhang

2023

Energy Tech

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Herein, the effects of TiO2 addition and different preparation methods on catalyst structure and CO2 methanation activity of Ni/SiO2 catalysts are investigated. Compared with wetness impregnation and sol–gel method, hydrothermal method is demonstrated to be a more efficient means for preparing Ni/SiO2 catalysts with more suitable pore structure, more active sites on the catalyst surface, and better catalytic performance. Ni/SiO2 catalysts with different TiO2 concentrations are synthesized by hydrothermal method for comparison with those without TiO2 introduced. The results show that TiO2‐promoted Ni/SiO2‐HS‐xTi exhibits higher activity and CH4 selectivity. Among this group, the Ni/SiO2‐HS‐2Ti catalyst performs the best, achieving 53.2% CO2 conversion at 350 ºC, 0.1 MPa, and WHSV of 45 000 mL g−1 h−1. The conclusions of the characterization analysis indicate that TiO2 effectively promotes the Ni dispersion on the SiO2 surface while reducing Ni particle size. In addition, TiO2 increases the amount of weak basic sites on the SiO2 surface and the electron cloud density around the active metal Ni, which facilitates the CO2 adsorption and activation.

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Section: Xps Resultssupporting

confidence: 93%

Promotion Effect of TiO₂ on Ni/SiO₂ Catalysts Prepared by Hydrothermal Method for CO₂ Methanation

Zhang

2023

Energy Tech

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“…The crystalline phases of all catalysts were analyzed by XRD method as shown in Figure 8. The XRD patterns of SSP present only amorphous silica in broad peak at 25.3° [15]. In Pd/SSP, it cannot be detected Pd peak because Pd was added only few amounts.…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 94%

“…Mesoporous SiO 2 is the most widely used support because these materials have unique properties, such as high surface area, excellent mechanical, thermal stability, and uniform pore sizes [15]. Silica can be produced from natural sources such as rice husk ash and bagasse ash.…”

Section: Chapter 2 Background and Literature Review 21 Properties Of ...mentioning

confidence: 99%

Ethanol dehydration with oxygen cofeeding over palladium catalyst supported on spherical silica particle with ceria modification

Sinchai

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Ethanol dehydration with oxygen cofeeding over palladium catalyst supported on spherical silica particle with ceria modification was carried out in fixed bed reactor under atmospheric pressure and temperature range of 150 ?C to 350 ?C (O2/Ethanol molar ratio = 2.2). The results showed that the effect of ceria modification of Pd/CeO2/SSP catalyst exhibited higher activity than Pd/SSP and CeO2/SSP at 200 ?C. Pd/CeO2/SSP catalyst yielded very the high ethanol conversion at 200 ?C about 57.7 %. However, the preparation method with different sequence of loading has significant effects on crystallite size, surface area, H2-TPR profile and catalytic activity. Pd-CeO2/SSP was synthesized by incipient wetness co-impregnation exhibits the highest ethanol conversion at 200 ?C about 66.0 % due to its high crystallite size (ca. 5.4 nm) and different interaction between metals and promoter that was proven by H2-TPR. The results also presented that the various amounts of oxygen cofeed of Pd/SSP catalyst had ethanol conversion at 175 ?C about 29.3 % and ethanol conversion of Pd-CeO2/SSP was observed at 250 ?C about 31.3 % for decreased oxygen cofeeding (O2/Ethanol molar ratio = 1.1), whereas in the�absence oxygen cofeeding, it showed less conversion at high temperature for all catalyst. Furthermore, ethanol can be converted to CO2 from combustion reaction of hydrocarbon with oxygen.

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Ethylene polymerization over TiSSP composite-supported MAO with bis[N-(3-tert-butylsalicylidene) cycloheptylamine] titanium dichloride complex

Cited by 2 publications

References 31 publications

Promotion Effect of TiO₂ on Ni/SiO₂ Catalysts Prepared by Hydrothermal Method for CO₂ Methanation

Promotion Effect of TiO₂ on Ni/SiO₂ Catalysts Prepared by Hydrothermal Method for CO₂ Methanation

Ethanol dehydration with oxygen cofeeding over palladium catalyst supported on spherical silica particle with ceria modification

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Ethylene polymerization over TiSSP composite-supported MAO with bis[N-(3-tert-butylsalicylidene) cycloheptylamine] titanium dichloride complex

Cited by 2 publications

References 31 publications

Promotion Effect of TiO2 on Ni/SiO2 Catalysts Prepared by Hydrothermal Method for CO2 Methanation

Promotion Effect of TiO2 on Ni/SiO2 Catalysts Prepared by Hydrothermal Method for CO2 Methanation

Ethanol dehydration with oxygen cofeeding over palladium catalyst supported on spherical silica particle with ceria modification

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Promotion Effect of TiO₂ on Ni/SiO₂ Catalysts Prepared by Hydrothermal Method for CO₂ Methanation

Promotion Effect of TiO₂ on Ni/SiO₂ Catalysts Prepared by Hydrothermal Method for CO₂ Methanation