Sustainable Routes for Synthesis of Zeolite Catalysts

Meng, Xiangju; Wang, Liang; Xiao, Feng‐Shou

doi:10.1002/9783527699827.ch11

Cited by 3 publications

(2 citation statements)

References 77 publications

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“…These synthesis methods were constructed mainly on the understanding of the mechanism of a crystallization process. The new synthesis methods are hydrothermal, solvo-thermal, microwave-assisted, sol–gel, etc. , Among all these methods available, the hydrothermal method is the most convenient process of synthesizing the molecular sieves with desired morphological framework structures. This can be achieved due to the higher temperatures and autogenous pressure involved in the synthesis process.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Promoter-Induced Rapid Non-Aqueous Media Synthesis of SAPO-35 and Methanol-to-Olefin Reaction

et al. 2021

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Microporous SAPO-35 molecular sieves (Levyne type) were synthesized in non-aqueous media by using different inorganic promoters (HClO 4 − , HF, H 3 PO 4 , and NaNO 3 ) to enhance the rate of crystallization, and the as-synthesized materials were characterized by using different methods such as powder X-ray diffraction spectroscopy (PXRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), magic angle spinning-nuclear magnetic resonance spectroscopy (MAS-NMR), Brunauer−Emmett−Teller (BET) analysis, and X-ray photoelectron spectroscopy (XPS). From PXRD patterns, it was found that all the materials have a highly crystalline nature without any other impurities. SEM images reveal rhombohedral particles in all synthesis conditions. The framework structure of the synthesized materials was identified by FT-IR spectroscopy, and it reveals that all materials gave a similar framework structure. From BET and XPS, we have confirmed that the pore size and pore diameters along with the elemental compositions have a minor change. The 27 Al, 31 P, and 29 Si MAS-NMR spectra of all the promoter-based SAPO-35 materials are close to those of the standard SAPO-35 material. All the above characterization studies reveal the formation of SAPO-35 in a short time with promoters. The catalytic application studies of these synthesized materials for a methanol-to-olefin conversion reaction were performed, and the efficiency of these materials was found to be similar to that of standard materials.

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Section: Introductionmentioning

confidence: 99%

Investigation on the Promoter-Induced Rapid Non-Aqueous Media Synthesis of SAPO-35 and Methanol-to-Olefin Reaction

et al. 2021

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“…Many attempts have been made to reduce organic templates or develop sustainable templates for zeolite synthesis [29].…”

Section: Reducing/avoiding Organic Templates For Zeolite Synthesismentioning

confidence: 99%

Advances in the Green Synthesis of Microporous and Hierarchical Zeolites: A Short Review

Pan

Yip

2019

Catalysts

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Hierarchical zeolites have been extensively studied due to their enhancement of intra-crystalline diffusion, which leads to the improved catalytic activity and resistance to coking-deactivation. Traditional synthesis strategies of hierarchical zeolites via post-treatment or directing synthesis with the aid of mesoporous template are often characterized by high energy consumption and substantial use of expensive and environmentally unfriendly organic templates. In the recent decade, new green synthesis protocols have been developed for the effective synthesis of conventional and hierarchical zeolites. In this review, the latest advancements on the green synthesis of hierarchical zeolites are summarized and discussed in detail.

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Interfacial effects between carbon nanotube templates and precursors on fabricating a wall-crystallized hierarchical pore system in zeolite crystals

et al. 2020

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Sustainable Routes for Synthesis of Zeolite Catalysts

Cited by 3 publications

References 77 publications

Investigation on the Promoter-Induced Rapid Non-Aqueous Media Synthesis of SAPO-35 and Methanol-to-Olefin Reaction

Investigation on the Promoter-Induced Rapid Non-Aqueous Media Synthesis of SAPO-35 and Methanol-to-Olefin Reaction

Advances in the Green Synthesis of Microporous and Hierarchical Zeolites: A Short Review

Interfacial effects between carbon nanotube templates and precursors on fabricating a wall-crystallized hierarchical pore system in zeolite crystals

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