Organosilane surfactant-directed synthesis of nanosheet-assembled SAPO-34 zeolites with improved MTO catalytic performance

Chen, Huiyong; Wang, Manyun; Yang, Mingsheng; Shang, Wenjin; Yang, Chenbiao; Liu, Baoyu; Hao, Qingqing; Zhang, Jianbo; Ma, Xiaoxun

doi:10.1007/s10853-019-03485-w

Cited by 27 publications

(10 citation statements)

References 47 publications

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“…More details in the synthesis of 2D zeolites are explained later. The extensive synthesis of zeolite nanosheets or nanolayers such as SAPO-34 (Chen et al 2019), ZSM-5 (Tian et al 2018), MFI (Choi et al 2009), FAU (Inayat et al 2012), FER (Wuamprakhon et al 2016), MTW (Dugkhuntod et al 2019), and many have increased over the years, owing to its remarkable advantages compared to 3D zeolites (Dugkhuntod et al 2019). Roth et al reported that from 16 commercially/industrially used zeolites, 13 are layered or 2D form zeolites (Roth et al 2015, Schulman et al 2020.…”

Section: Two-dimensional Zeolitesmentioning

confidence: 99%

Advanced Ordered Nanoporous Materials

Kadja

Nurdini

Krisnandi

et al. 2021

Advanced Functional Porous Materials

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Ordered nanoporous materials have attracted much attention due to their unique pore architecture, tunable physicochemical properties, which find applications in a broad spectrum of catalysis, separation, adsorption, drug delivery, energy storage, and sensing. In the past decades, the amount of research on ordered nanoporous materials has grown incrementally, resulting in diverse types of these materials with unprecedented structures. Herein, this chapter presents the recent advances of ordered nanoporous materials, including zeolites, ordered mesoporous materials (OMMs), metal-organic frameworks (MOFs), and covalent organic frameworks (COFs). Several vital aspects, i.e., structural and physicochemical properties,

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Section: Two-dimensional Zeolitesmentioning

confidence: 99%

Advanced Ordered Nanoporous Materials

Kadja

Nurdini

Krisnandi

et al. 2021

Advanced Functional Porous Materials

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“…The hierarchical assembled SAPO-34 was obtained with sheet-like morphology, attributing to the capping effect of the TPOAC organosilane surfactant. The growth of nanocrystals was suppressed to form sheet-like particles followed by the aggregation of them [31].…”

Section: Synthesis Of Hierarchical Zeolite Nanosheetsmentioning

confidence: 99%

“…In addition, the catalytic performances of the MTO reaction over the synthesized SAPO-34 were evaluated. The hierarchical nanosheet-assembled SAPO-34 catalyst obtained using dual templates such as TPOAC/TEAOH and TPOAC/DEA exhibits a longer catalytic lifetime and slower coke formation rate and higher light olefin selectivity (81.93%) compared with those of the conventional SAPO-34, which can be attributed to the well retained microporosity, increased mesoporosity and suitable weak acidity [30,31]. The hierarchical SAPO-34 nanoparticles synthesized using carbon nanotubes (CNTs) and diethylamine (DEA) in ultrasound-assisted synthesis were investigated in methanol to olefins.…”

Section: Methanol and Ethanol To Light Olefinsmentioning

confidence: 99%

A Comprehensive Review of the Applications of Hierarchical Zeolite Nanosheets and Nanoparticle Assemblies in Light Olefin Production

Dugkhuntod

Wattanakit

2020

Catalysts

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Light olefins including ethylene, propylene and butylene are important building blocks in petrochemical industries to produce various chemicals such as polyethylene, polypropylene, ethylene oxide and cumene. Traditionally, light olefins are produced via a steam cracking process operated at an extremely high temperature. The catalytic conversion, in which zeolites have been widely used, is an alternative pathway using a lower temperature. However, conventional zeolites, composed of a pure microporous structure, restrict the diffusion of large molecules into the framework, resulting in coke formation and further side reactions. To overcome these problems, hierarchical zeolites composed of additional mesoporous and/or macroporous structures have been widely researched over the past decade. In this review, the recent development of hierarchical zeolite nanosheets and nanoparticle assemblies together with opening up their applications in various light olefin productions such as catalytic cracking, ethanol dehydration to ethylene, methanol to olefins (MTO) and other reactions will be presented.Catalysts 2020, 10, 245 2 of 15 windows, they can be divided into three different categories including large porous, medium porous and small porous zeolites, which are composed of a different number of tetrahedral units, or T atoms of 12, 10 and 8 membered rings, respectively. These behaviors make each zeolite serving unique shape selective properties, which are very important for the appropriate applications.Although there are several above-mentioned promising properties of zeolites, they are typically composed of a very small microporous structure, eventually resulting in some disadvantages of the diffusion limitation of guest molecules inside the framework. Some bulky molecules cannot easily penetrate into active sites located at microporous channels, and therefore a poor catalytic performance due to a very low reaction rate and a fast deactivation of catalysts is observed. To overcome these limitations and to improve the accessibility of molecules into active sites, in recent years modified zeolites obtained by introducing additional larger porous structures have been extensively developed [5][6][7][8].It is well known that hierarchical zeolites, composed of at least two levels of porous structures such as microspores and mesopores, microspores and macropores, and micropores/mesopores and macropores have been extensively studied and developed. Their microporous (<2 nm), mesoporous (2-50 nm) and/or macroporous (>50 nm) structures are well connected to each other. In this case, the additional larger porous structures can improve diffusion limitation, molecular transportation and coke deposition [9]. In the past decade, there have been several studies regarding the synthesis of hierarchical zeolites to overcome these problems. Herein, this comprehensive review opens up perspectives of the recent synthesis approaches of hierarchical zeolite nanosheets and nanoparticle assemblies, as well as the successful production of light olef...

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“…Choi et al 37 reported an efficient strategy for the synthesis of hierarchical MFI and LTA zeolites by using the amphiphilic organosilane surfactants as combinational SDA. Following this method, the nanosized or mesoporous MCM-22, 38 SAPO-34, 39 FAU-X, 40 AlPO 4 -5, 41 and MOR 11,42 zeolites were also successfully synthesized by using an amphiphilic organosilane surfactant as an assistant SDA.…”

Section: Introductionmentioning

confidence: 99%