☆ 4.6 Review

FCC Catalyst Accessibility-A Review

CATALYSTS (2023)

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Article Chemistry, Multidisciplinary

Transformation of Discrete Amorphous Aluminosilicate Nanoparticles into Nanosized Zeolites

Hailing Guo et al.

Summary: The study demonstrates the impact of amorphous aluminosilicate precursor nanoparticles on the formation of nanosized zeolites with faujasite (FAU) and sodalite (SOD) frameworks. The two-step synthesis procedure involves the transformation of amorphous nanoparticles into FAU and SOD nanosized crystals, with the presence of sodalite cages confirmed by Na-23-H-1 D-HMQC NMR spectroscopy. The subsequent treatment with aqueous sodium hydroxide stabilizes the sodalite cages during long-range ordering in the amorphous particles.

ADVANCED MATERIALS INTERFACES (2021)

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Review Chemistry, Multidisciplinary

129Xe NMR on Porous Materials: Basic Principles and Recent Applications

Dorothea Wisser et al.

Summary: NMR spectroscopy of xenon is a powerful method for probing pore sizes and structures in functional and catalytic materials, providing insights into hierarchical structures. This technique has both possibilities and limitations, as highlighted in recent works.

ADVANCED MATERIALS INTERFACES (2021)

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Review Chemistry, Multidisciplinary

Selective Modification of Hierarchical Pores and Surfaces in Nanoporous Materials

Michael Tiemann et al.

Summary: Research has shown that selective manipulation of the surface of materials through functionalization or introducing guest species can enhance the performance and application of materials. Various strategies can be used to achieve selective surface modification, including methods such as soft protection and hard protection. In addition, factors such as the size and reactivity/diffusion of functionalization agents can also be utilized to achieve selectivity, which is of significant research value.

ADVANCED MATERIALS INTERFACES (2021)

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Review Chemistry, Multidisciplinary

Nature-Inspired, Computer-Assisted Optimization of Hierarchically Structured Zeolites

Marc-Olivier Coppens et al.

Summary: Zeolite catalysis is often affected by transport limitations, but introducing wide pores can reduce these limitations and control product distribution. Rational design of meso- and macropore space is crucial. Hierarchical structured zeolites with added macro-/mesopore volume fraction and connectivity are important for optimal catalytic performance.

ADVANCED MATERIALS INTERFACES (2021)

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Article Chemistry, Multidisciplinary

Tailoring Multiple Porosities of Hierarchical ZSM-5 Zeolites by Carbon Dots for High-Performance Catalytic Transformation

Shufang Zhao et al.

Summary: A high-efficiency method for synthesizing hierarchical ZSM-5 zeolites with micropore and multistage mesopores using water-soluble carbon dots of various size distributions has been proposed. The obtained catalysts showed excellent catalytic performance and stability, attributed to improved reactant and product diffusion, anti-coking stability, suitable acidity, and increased accessibility of acid sites facilitated by multistage mesopores.

ADVANCED MATERIALS INTERFACES (2021)

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Article Chemistry, Physical

Mimicking industrial aging in fluid catalytic cracking: A correlative microscopy approach to unravel inter-particle heterogeneities

M. Gambino et al.

Summary: Using a correlative microscopy approach, this study investigated the spatial heterogeneities in artificially deactivated catalysts and compared the impact of metal contaminants on catalyst acidity and pore accessibility. The findings suggest that in addition to metal distribution, hydrothermal degradation also plays a role in dealumination and acidity drop in ECATs. Fe contamination must also be considered for its effect on matrix accessibility.

JOURNAL OF CATALYSIS (2021)

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Review Chemistry, Multidisciplinary

Preparation and Potential Catalytic Applications of Hierarchically Structured Zeolites with Macropores

Tobias Weissenberger et al.

Summary: Hierarchically structured zeolites can enhance mass transport and alleviate diffusion limitations in micropores. Macropores with diameters over 50 nm have intrinsic advantages over mesopores for catalytic applications, and methods for preparing zeolites with additional macropores have been developed recently.

ADVANCED MATERIALS INTERFACES (2021)

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Review Chemistry, Multidisciplinary

Hierarchically-Ordered Zeolites: A Critical Assessment

Martin Hartmann et al.

Summary: Hierarchically-ordered zeolites have gained increasing attention in the past 15 years for their outstanding properties in catalytic reactions with industrial relevance. Through the introduction of additional meso- or macropore systems, hierarchical zeolites combine the intrinsic properties of conventional zeolites with facilitated access and transport, showing potential for technical applications.

ADVANCED MATERIALS INTERFACES (2021)

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Editorial Material Chemistry, Multidisciplinary

Hierarchically-Ordered Materials

Martin Hartmann et al.

ADVANCED MATERIALS INTERFACES (2021)

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Article Chemistry, Multidisciplinary

Surfactant-Templated Zeolites: From Thermodynamics to Direct Observation

Monica J. Mendoza-Castro et al.

Summary: Surfactant-templating is a versatile method for introducing tailored intracrystalline mesoporosity in zeolites, allowing for fine control over mesoporosity amount and size while maintaining the main features of the original zeolite. This method has been successfully applied to various zeolite structures, resulting in improved textural and diffusional properties and excellent catalytic performances in industrial processes. Additionally, the surfactant-templated mesoporous Y zeolite has shown promising results in refineries as the first industrial and large-scale application of hierarchical zeolites.

ADVANCED MATERIALS INTERFACES (2021)

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Review Energy & Fuels

Pore characterization of shales: A review of small angle scattering technique

Mengdi Sun et al.

JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING (2020)

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Review Materials Science, Multidisciplinary

Microcomputed tomography-based characterization of advanced materials: a review

L. Vasarhelyi et al.

MATERIALS TODAY ADVANCES (2020)

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Article Environmental Sciences

Comparison between inductively coupled plasma and X- ray fluorescence performance for Pb analysis in environmental soil samples

Ali Al Maliki et al.

ENVIRONMENTAL EARTH SCIENCES (2017)

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Article Chemistry, Applied

FAU-type zeolite nanosheets from additives-free system

Stanislav Ferdov

MICROPOROUS AND MESOPOROUS MATERIALS (2017)

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Article Chemistry, Applied

Innovations in hierarchical zeolite synthesisKe

Ke Zhang et al.

CATALYSIS TODAY (2016)

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Review Chemistry, Multidisciplinary

Hierarchy concepts: classification and preparation strategies for zeolite containing materials with hierarchical porosity

Wilhelm Schwieger et al.

CHEMICAL SOCIETY REVIEWS (2016)

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Review Chemistry, Multidisciplinary

Fluid catalytic cracking: recent developments on the grand old lady of zeolite catalysis

E. T. C. Vogt et al.

CHEMICAL SOCIETY REVIEWS (2015)

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Article Multidisciplinary Sciences

Life and death of a single catalytic cracking particle

Florian Meirer et al.

SCIENCE ADVANCES (2015)

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Article Chemistry, Multidisciplinary

Superior Mass Transfer Properties of Technical Zeolite Bodies with Hierarchical Porosity

Laurent Gueudre et al.

ADVANCED FUNCTIONAL MATERIALS (2014)

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Review Chemistry, Applied

Challenges on molecular aspects of dealumination and desilication of zeolites

Marius-Christian Silaghi et al.

MICROPOROUS AND MESOPOROUS MATERIALS (2014)

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Review Materials Science, Multidisciplinary

Progress in electron tomography to assess the 3D nanostructure of catalysts

Jovana Zecevic et al.

CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE (2013)

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Article Chemistry, Multidisciplinary

Hierarchical Y and USY Zeolites Designed by Post-Synthetic Strategies

Danny Verboekend et al.

ADVANCED FUNCTIONAL MATERIALS (2012)

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Article Chemistry, Multidisciplinary

Assembly of a hierarchical zeolite-silica composite by spray drying

Gerardo Majano et al.

CRYSTENGCOMM (2012)

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Article Chemistry, Physical

Mesostructured zeolite Y-high hydrothermal stability and superior FCC catalytic performance

Javier Garcia-Martinez et al.

CATALYSIS SCIENCE & TECHNOLOGY (2012)

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Article Materials Science, Multidisciplinary

Permeability, pore connectivity and critical pore throat control of expandable polymeric sphere templated macroporous alumina

Linnea Andersson et al.

ACTA MATERIALIA (2011)

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Review Chemistry, Physical

Overview and Industrial Assessment of Synthesis Strategies towards Zeolites with Mesopores

Robin Chal et al.

CHEMCATCHEM (2011)

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Review Chemistry, Physical

Design of hierarchical zeolite catalysts by desilication

Danny Verboekend et al.

CATALYSIS SCIENCE & TECHNOLOGY (2011)

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Article Engineering, Chemical

Determination of the percolation properties and pore connectivity for mesoporous solids using NMR cryodiffusometry

Emily L. Perkins et al.

CHEMICAL ENGINEERING SCIENCE (2008)

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Article Chemistry, Applied

Study of the accessibility effect on the irreversible deactivation of FCC catalysts from contaminant feed metals

A. C. Psarras et al.

CATALYSIS TODAY (2007)

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Article Chemistry, Physical

Accessibility in alumina matrices of FCC catalysts

M. Falco et al.

APPLIED CATALYSIS A-GENERAL (2006)

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Article Chemistry, Physical

On the shape of the mesopores in zeolite Y: A three-dimensional transmission electron microscopy study combined with texture analysis

AH Janssen et al.

JOURNAL OF PHYSICAL CHEMISTRY B (2002)

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Article Chemistry, Multidisciplinary

Formation of uniform mesopores in ZSM-5 zeolite through treatment in alkaline solution

M Ogura et al.

CHEMISTRY LETTERS (2000)

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Article Chemistry, Physical

Influence of different rare earth ions on hydrogen transfer over Y zeolite

G de la Puente et al.

APPLIED CATALYSIS A-GENERAL (2000)

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