Ni/SIRAL-30 as a heterogeneous catalyst for ethylene oligomerization

Lee, Maeum; Yoon, Ji Woong; Kim, Young‐Min; Yoon, Ji Sun; Chae, Ho‐Jeong; Han, Yohan; Hwang, Dong Won

doi:10.1016/j.apcata.2018.06.004

Cited by 34 publications

(17 citation statements)

References 40 publications

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“…After calcination at 500 °C for 7 h, the pseudo‐boehmite phase on the fresh ASA was transformed to γ‐Al 2 O 3 . The similar phase change of commercial amorphous silica‐alumina materials has been reported by Lee et al [12b] . It was also noted that as compared to the ASA‐10 sample, the diffraction peaks intensity corresponding to γ‐Al 2 O 3 on the ASA‐60 sample was significantly weaker.…”

Section: Resultssupporting

confidence: 84%

Efficient Etherification of 2,5‐Bis(hydroxymethyl)furan to 2,5‐Bis(propoxymethyl)furan by an Amorphous Silica‐Alumina Catalyst in a Fixed‐Bed Reactor

Chen

Xue

et al. 2022

ChemPlusChem

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The efficient etherification of 2,5‐bis(hydroxymethyl)furan (BHMF) to 2,5‐bis(propoxymethyl)furan (BPMF) was achieved by using low‐cost amorphous silica‐aluminas (ASA) catalysts in a fixed‐bed reactor. A considerable yield of BPMF up to 85.1 % was obtained over ASA‐30 catalyst under the reaction conditions of 140 °C, 2.0 MPa of N2, and 0.015 h−1 of WHSV. The excellent performance of ASA‐30 catalyst could be attributed to the relatively stronger acidity (>375 °C) and larger mesoporous size (6 nm), thereby facilitating the conversion of BHMF to BPMF. In addition, the lower ratio of Brønsted/Lewis acid sites for ASA catalyst was found to efficiently suppress the occurrence of side reactions.

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Section: Resultssupporting

confidence: 84%

Efficient Etherification of 2,5‐Bis(hydroxymethyl)furan to 2,5‐Bis(propoxymethyl)furan by an Amorphous Silica‐Alumina Catalyst in a Fixed‐Bed Reactor

Chen

Xue

et al. 2022

ChemPlusChem

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“…Ethylene oligomerization was performed on the five NiOx/SA catalysts with different Si/Al ratios (0.01-3.86) at 200 • C, 10 bar, and 0.375 h −1 WHSV, which are identical to those in our previous study [2,53]. Figure 6 shows the ethylene conversion and selectivity to products.…”

Section: Ethylene Oligomerization Over Niox/sa Catalystsmentioning

confidence: 79%

“…Herein, we performed ethylene oligomerization over heterogeneous catalysts comprising nickel oxide supported on SAs (NiOx/SA) with different Si/Al ratios to produce fuel grade hydrocarbons. In our previous study, the Ni/Siral-30 with 4 wt % of Ni (NiOx/SA-028 in this study, see below) had showed a good catalytic activity for ethylene oligomerization in a continuous fixed-bed reactor [53]. This catalyst gave almost complete ethylene conversion and stability over 100 h at 200 • C, 10 bar, and a weight hourly space velocity (WHSV) of 0.375 h −1 .…”

Section: Introductionmentioning

confidence: 76%

Effect of Metal Oxide–Support Interactions on Ethylene Oligomerization over Nickel Oxide/Silica–Alumina Catalysts

et al. 2019

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We investigated the interactions between nickel oxide and silica–alumina supports, which were applied to the catalytic oligomerization of ethylene by powder X-ray diffraction, UV diffuse reflectance spectroscopy, H2 temperature-programmed reduction, and X-ray photoelectron spectroscopy. The catalytic activity was also correlated with the acidity of catalysts determined by NH3 temperature-programmed desorption and pyridine FT-IR spectroscopy. Although all the catalysts had similar Ni contents, their catalytic performances were strongly influenced by the strength of the metal oxide–support interaction. Strong interaction promoted the formation of nickel aluminate on the catalyst surface, and resulted in low catalytic activity due to reducing the amount of nickel oxide active sites. However, weak interaction favored the aggregation of nickel oxide species into larger particles, and thus resulted in low ethylene conversion and selectivity to oligomers. Eventually, the optimal activity was realized at the medium interaction strength, preserving a high amount of both active nickel oxides and acid sites.

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“…Recently, the use of amorphous alumino-silicates has gained interest for the valorization of specific olefin-rich refinery gases such as upgrading biosyngas to gasoline-range hydrocarbons 287 or dilute ethylene feeds containing more impurities. 288 Recent commercialization of new amorphous aluminosilicates by Sasol, such as Siralox-30, prompted Hwang et al 289 to use them for ethylene oligomerization and to maximize C 10 + selectivity for jet fuel production. Besides synthetic amorphous aluminosilicates, "natural" aluminosilicates have recently been described in the literature by Hulea et al 290 Bentonite, acid-washed montmorillonite and montmorillonite pillared clay were promoted by ionexchange with nickel nitrate.…”

Section: Silicas-ni/siomentioning

confidence: 99%

Nickel Catalyzed Olefin Oligomerization and Dimerization

et al. 2020

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Brought to life more than half a century ago and successfully applied for high-value petrochemical intermediates production, nickel-catalyzed olefin oligomerization is still a very dynamic topic, with many fundamental questions to address and industrial challenges to overcome. The unique and versatile reactivity of nickel enables the oligomerization of ethylene, propylene and butenes into a wide range of oligomers that are highly sought-after in numerous fields to be controlled. Interestingly, both homogeneous and heterogeneous nickel catalysts have been scrutinized and employed to do this. This rare specificity encouraged us to interlink them in this review so as to open up opportunities for further catalyst development and innovation. An in-depth understanding of the reaction mechanisms in play is essential to being able to fine-tune the selectivity and achieve efficiency in the rational design of novel catalytic systems. This review thus provides a complete overview of the subject, compiling the main fundamental/industrial milestones and remaining challenges facing homogeneous/heterogeneous approaches as well as emerging catalytic concepts, with a focus on the last 10 years.

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Ni/SIRAL-30 as a heterogeneous catalyst for ethylene oligomerization

Cited by 34 publications

References 40 publications

Efficient Etherification of 2,5‐Bis(hydroxymethyl)furan to 2,5‐Bis(propoxymethyl)furan by an Amorphous Silica‐Alumina Catalyst in a Fixed‐Bed Reactor

Efficient Etherification of 2,5‐Bis(hydroxymethyl)furan to 2,5‐Bis(propoxymethyl)furan by an Amorphous Silica‐Alumina Catalyst in a Fixed‐Bed Reactor

Effect of Metal Oxide–Support Interactions on Ethylene Oligomerization over Nickel Oxide/Silica–Alumina Catalysts

Nickel Catalyzed Olefin Oligomerization and Dimerization

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