In-situ construction and catalytic property of highly exposed Lewis acidity on hierarchical Zr-zeolite assisted by K+ cation

Yang, Yun; Zhou, Dan; Zhang, Huaxin; Yin, Binyi; Liu, Qingrui; Lu, Xinhuan; Shui-jin, Yang; Xia, Qinghua

doi:10.1016/j.micromeso.2021.110898

Cited by 12 publications

(5 citation statements)

References 40 publications

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“…Figure 1b displays the FT-IR spectra of Zr(40)-ZSM-5-st(500) and ZSM-5 samples. The Zr(40)-ZSM-5-st(500) sample exhibited a novel band at 962 cm −1 compared with the parent ZSM-5 zeolite, which can be ascribed to the antisymmetric stretching vibration of the Si-O-Zr bond within the framework [18]. The aforementioned findings revealed that Zr species are efficiently added to Zr(40)-ZSM-5-st(500).…”

Section: Catalyst Characterizationmentioning

confidence: 87%

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An Efficient Zr-ZSM-5-st Solid Acid Catalyst for the Polyol Esterification Reaction

Zong

Lou

et al. 2022

Catalysts

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In this study, Zr active species were implanted into a ZSM-5 zeolite framework to form a solid acid catalyst through steam treatment and the liquid-solid isomorphous substitution process. The as-synthesized Zr-ZSM-5-st catalyst ensured excellent esterification of trimethylolpropane and fatty acids (FAs) to achieve a polyol ester production yield of 94.41%. Combined with N2 physisorption, X-ray diffraction, Fourier transform infrared spectroscopy, ultraviolet-visible spectroscopy, transmission electron microscopy mapping, X-ray photoelectron spectroscopy, NH3 temperature-programmed desorption, and inductively coupled mass plasma spectroscopy were conducted. The results revealed that the excellent performance of Zr-ZSM-5-st catalyst could be attributed to the enhanced acidity and the developed surface area and pore structure.

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Section: Catalyst Characterizationmentioning

confidence: 87%

“…Moreover, a broad band can be detected at approximately 266 nm in Zr(40)-ZSM-5-st(500). This band can be associated with the separated (Si-O) 2 -Zr=O species onto the zeolite framework surface [18,19]. Figure 1b displays the FT-IR spectra of Zr(40)-ZSM-5-st(500) and ZSM-5 samples.…”

Section: Catalyst Characterizationmentioning

confidence: 99%

An Efficient Zr-ZSM-5-st Solid Acid Catalyst for the Polyol Esterification Reaction

Zong

Lou

et al. 2022

Catalysts

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“…Zou et al successfully constructed hollow nest-structured Zr zeolite (Zr-HSZ) with intergrown single/double/multi-unit-cell nanosheet via a one-step rotating hydrothermal method (Figure 5). [34] The crystallinity was rather poor in the absence of K + species. Once adding it into the synthesis gels, a well-defined MWW phase was obtained.…”

Section: Hydrothermal Synthesismentioning

confidence: 99%

Section: Hydrothermal Synthesismentioning

confidence: 99%

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Synthesis and Catalytic Applications of Advanced Sn‐ and Zr‐Zeolites Materials

Liu,

Zhu

2023

Advanced Science

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The incorporation of isolated Sn (IV) and Zr (IV) ions into silica frameworks is attracting widespread attention, which exhibits remarkable catalytic performance (conversion, selectivity, and stability) in a broad range of reactions, especially in the field of biomass catalytic conversion. As a representative example, the conversion route of carbohydrates into valuable platform and commodity chemicals such as lactic acid and alkyl lactates, has already been established. The zeotype materials also possess water‐tolerant ability and are capable to be served as promising heterogeneous catalysts for aqueous reactions. Therefore, dozens of Sn‐ and Zr‐containing silica materials with various channel systems have been prepared successfully in the past decades, containing 8 membered rings (MR) small pore CHA zeolite, 10‐MR medium pore zeolites (FER, MCM‐56, MEL, MFI, MWW), 12‐MR large pore zeolites (Beta, BEC, FAU, MOR, MSE, MTW), and 14‐MR extra‐large pore UTL zeolite. This review about Sn‐ and Zr‐containing metallosilicate materials focuses on their synthesis strategy, catalytic applications for diverse reactions, and the effect of zeolite characteristics on their catalytic performances.

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Synthesis and Catalytic Applications of Sn‐ and Zr‐Zeolites

Zhu

2024

Micro‐Mesoporous Metallosilicates

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In-situ construction and catalytic property of highly exposed Lewis acidity on hierarchical Zr-zeolite assisted by K+ cation

Cited by 12 publications

References 40 publications

An Efficient Zr-ZSM-5-st Solid Acid Catalyst for the Polyol Esterification Reaction

An Efficient Zr-ZSM-5-st Solid Acid Catalyst for the Polyol Esterification Reaction

Synthesis and Catalytic Applications of Advanced Sn‐ and Zr‐Zeolites Materials

Synthesis and Catalytic Applications of Sn‐ and Zr‐Zeolites

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