Selective conversion of methanol to propylene over highly dealuminated mordenite: Al location and crystal morphology effects

Ren, Linzhu; Wang, Bowen; Lu, Kun; Peng, Rusi; Guan, Yejun; Jiang, Jingang; Xu, Hao; Wu, Peng

doi:10.1016/s1872-2067(20)63726-3

Cited by 18 publications

(10 citation statements)

References 64 publications

(89 reference statements)

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“…1 The methanol-to-propylene (MTP) reaction with the MFI -topology ZSM-5 zeolite as the most representative catalyst provides an efficient way to produce propylene, an important chemical raw material. 2–4 However, reactant and product diffusion limitations imposed by the microporous nature of zeolites may restrict their catalytic performance, leading to fast deactivation. This problem can be overcome by reducing the diffusion path, such as controlling the size and orientation of zeolite crystals, and constructing intracrystal or intercrystal mesopores.…”

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confidence: 99%

Direct synthesis of IDM-1 aluminosilicate nanosheets with improved MTP performance

Gong

Tuo

et al. 2023

Chem. Commun.

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confidence: 99%

Direct synthesis of IDM-1 aluminosilicate nanosheets with improved MTP performance

Gong

Tuo

et al. 2023

Chem. Commun.

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“…In addition, typical bands associated with mordenite zeolite are located at 808, 960 cm −1 and in the range between 1206 and 1869 cm −1 , corresponding to the fundamental vibrations of the tetrahedral bonds of (Al, Si) O 4 [ 58 , 59 , 60 ]. Furthermore, stretching signal vibrations associated with silanol groups (Si-O-H) are registered around 3668 cm −1 [ 61 ]. All samples exhibit two IR bands that can be attributed to hydroxyl groups.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of BiOI/Mordenite Composites for Photocatalytic Treatment of Organic Pollutants Present in Agro-Industrial Wastewater

et al. 2022

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Recently, bismuth oxyiodide (BiOI) is an attractive semiconductor to use in heterogeneous photocatalysis processes. Unfortunately, BiOI individually shows limited photocatalytic efficiency, instability, and a quick recombination of electron/holes. Considering the practical application of this semiconductor, some studies show that synthetic zeolites provide good support for this photocatalyst. This support material permits a better photocatalytic efficiency because it prevents the quick recombination of photogenerated pairs. However, the optimal conditions (time and temperature) to obtain composites (BiOI/ synthetic zeolite) with high photocatalytic efficiency using a coprecipitation-solvothermal growth method have not yet been reported. In this study, a response surface methodology (RSM) based on a central composite design (CCD) was applied to optimize the synthesis conditions of BiOI/mordenite composites. For this purpose, eleven BiOI/mordenite composites were synthesized using a combined coprecipitation-solvothermal method under different time and temperature conditions. The photocatalytic activities of the synthesized composites were evaluated after 20 min of photocatalytic oxidation of caffeic acid, a typical organic pollutant found in agro-industrial wastewater. Moreover, BiOI/mordenite composites with the highest and lowest photocatalytic activity were physically and chemically characterized using nitrogen adsorption isotherms, scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and diffuse reflectance spectroscopy (DRS). The optimal synthesis conditions prove to be 187 °C and 9 h. In addition, the changes applied to the experimental conditions led to surface property modifications that influenced the photocatalytic degradation efficiency of the BiOI/mordenite composite toward caffeic acid photodegradation.

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“…The active region of the zeolite is shown as colored balls, where one silicon (Si) atom is replaced by one phosphorus (P) atom and two other Si atoms are replaced by two aluminum (Al) atoms. 33,34 The charge balance proton (H) is connected to the bridged oxygen (O) atom as given in Fig. 1.…”

Section: Computational Detailsmentioning

confidence: 99%

A theoretical study on the methanol to propene mechanism catalyzed by a phosphorus-modified acidic FAU zeolite

et al. 2023

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Selective conversion of methanol to propylene over highly dealuminated mordenite: Al location and crystal morphology effects

Cited by 18 publications

References 64 publications

Direct synthesis of IDM-1 aluminosilicate nanosheets with improved MTP performance

Direct synthesis of IDM-1 aluminosilicate nanosheets with improved MTP performance

Synthesis of BiOI/Mordenite Composites for Photocatalytic Treatment of Organic Pollutants Present in Agro-Industrial Wastewater

A theoretical study on the methanol to propene mechanism catalyzed by a phosphorus-modified acidic FAU zeolite

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