4.7 Article

Facile and fast synthesis of highly active Lewis acid MWW zeolite from pure silica ITQ-1

Related references

Note: Only part of the references are listed.
Article Chemistry, Inorganic & Nuclear

The challenge of silanol species characterization in zeolites

Florent Dubray et al.

Summary: This article investigates the factors influencing the silanol species in silica-based materials and proposes guidelines for evaluating them using spectroscopic techniques.

INORGANIC CHEMISTRY FRONTIERS (2022)

Article Chemistry, Inorganic & Nuclear

MWW-type zeolite nanostructures for a one-pot three-component Prins-Friedel-Crafts reaction

Roman Barakov et al.

Summary: The one-pot Prins-Friedel-Crafts reaction catalyzed by large-pore zeolites is an environmentally friendly route to valuable heterocyclic compounds. The catalytic behavior of a set of MWW zeolite catalysts with varying textural properties and chemical compositions was investigated and compared to that of a large pore beta zeolite. The MWW zeolites showed similar selectivities towards targeted products containing a 4-arylhetrahydropyran moiety, with high concentration and enhanced accessibility of acid sites being key factors for achieving high conversion and selectivity.

INORGANIC CHEMISTRY FRONTIERS (2022)

Article Chemistry, Multidisciplinary

Construction of Single-Crystalline Hierarchical ZSM-5 with Open Nanoarchitectures via Anisotropic-Kinetics Transformation for the Methanol-to-Hydrocarbons Reaction

Guangrui Chen et al.

Summary: We present an anisotropic-kinetics transformation strategy for preparing single-crystalline aluminosilicate MFI zeolites with highly open nanoarchitectures and hierarchical porosities. The strategy involves in situ etching and recrystallization of pure-silica MFI zeolite nanotemplates under hydrothermal conditions. The resulting ZSM-5 nanocages exhibit enhanced catalytic lifetime and lower coking rate in the methanol-to-hydrocarbons reaction compared to conventional microcrystals and nanocrystals.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2022)

Article Chemistry, Physical

Highly Dispersed Sn-beta Zeolites as Active Catalysts for Baeyer-Villiger Oxidation: The Role of Mobile, In Situ Sn(II)O Species in Solid-State Stannation

Elise Peeters et al.

Summary: Solid-state incorporation of Sn into beta zeolites is an efficient method to obtain Lewis acidic Sn beta catalysts with high activity. Preheating under an inert atmosphere prior to air-calcination results in Sn beta catalysts with the highest Sn dispersion and less extra-framework SnO2. In situ characterization reveals in situ generation of Sn(II)O species during pre-pyrolysis, enabling high Sn dispersion in Sn beta.

ACS CATALYSIS (2021)

Article Engineering, Environmental

A reliable protocol for fast and facile constructing multi-hollow silicalite-1 and encapsulating metal nanoparticles within the hierarchical zeolite

Yong Chen et al.

Summary: A facial and cost-effective protocol has been proposed for preparing multi-hollow silicalite-1 (S-1) zeolite, with highly controllable geometric structure and improved catalytic activity by treating the parent zeolite at low temperature before recrystallization. The key role of creating deep gullies on the parent zeolite prior to recrystallization allows for constructing the desired multi-hollow structure and confining metal nanoparticles without protective agents. The protocol is effective for dispersing metal nanoparticles within the sponge-like S-1, resulting in higher catalytic activity for CO oxidation and propane dehydrogenation compared to conventional catalysts.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Engineering, Chemical

Postsynthesis of Delaminated MWW-Type Stannosilicate as a Robust Catalyst for Sugar Conversion to Methyl Lactate

Xiangcheng Li et al.

Summary: By dealuminating SCM-1 and adding Sn species, a new MWW-type stannosilicate Sn-SCM-1 with a partially delaminated layered structure was successfully synthesized. The delaminated double-layered structure of Sn-SCM-1 offers numerous reactive sites for catalysis and facilitates the diffusion of biomass macromolecules, resulting in superior catalytic efficiency in converting glucose to methyl lactate and excellent recyclability in cycle tests.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2021)

Article Chemistry, Physical

Formaldehyde gas sensors based on SnO2/ZSM-5 zeolite composite nanofibers

Yanhui Sun et al.

Summary: The addition of zeolite on the surface of metal oxides enhances the selectivity of gas sensors, and the synthesis of SnO2/ZSM-5 composite nanofibers can improve sensor sensitivity and selectivity to formaldehyde. The interface between the two materials plays a significant role in enhancing sensor properties.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

Article Chemistry, Multidisciplinary

Mechanism and Kinetics of Acetone Conversion to Isobutene over Isolated Hf Sites Grafted to Silicalite-1 and SiO2

Yanfei Zhang et al.

Summary: This study focused on acetone conversion to isobutene over isolated hafnium sites supported on Silicalite-1 and SiO2. It was found that Hf/Silicalite-1 exhibited faster reaction rates due to Hf-OH groups promoting the aldol condensation, while both Hf sites and Si-OH groups contributed to the reaction on Hf/SiO2.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

Article Chemistry, Multidisciplinary

γ-Valerolactone-introduced controlled-isomerization of glucose for lactic acid production over an Sn-Beta catalyst

Xinpeng Zhao et al.

Summary: The study revealed that GVL can effectively suppress the conversion of glucose into fructose during catalytic reactions, leading to a higher yield of lactic acid. This research provides new insights for controlling the hydrothermal conversion of glucose into lactic acid.

GREEN CHEMISTRY (2021)

Article Chemistry, Multidisciplinary

Extremely Stable Zeolites Developed via Designed Liquid-Mediated Treatment

Kenta Iyoki et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

Article Chemistry, Multidisciplinary

Enhanced Surface Activity of MWW Zeolite Nanosheets Prepared via a One-Step Synthesis

Yunwen Zhou et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

Article Chemistry, Multidisciplinary

Modified Ti-MWW Zeolite as a Highly Efficient Catalyst for the Cyclopentene Epoxidation Reaction

Wen Tong et al.

FRONTIERS IN CHEMISTRY (2020)

Article Multidisciplinary Sciences

In situ imaging of two-dimensional surface growth reveals the prevalence and role of defects in zeolite crystallization

Madhuresh K. Choudhary et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2020)

Article Chemistry, Multidisciplinary

Hydrothermal synthesis of boron-free Zr-MWW and Sn-MWW zeolites as robust Lewis acid catalysts

Zhiguo Zhu et al.

CHEMICAL COMMUNICATIONS (2020)

Article Chemistry, Physical

Defect-engineered zeolite porosity and accessibility

Zhengxing Qin et al.

JOURNAL OF MATERIALS CHEMISTRY A (2020)

Article Chemistry, Multidisciplinary

Opening the Cages of Faujasite-Type Zeolite

Zhengxing Qin et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2017)

Article Chemistry, Applied

Single isomerization selectivity of glucose in methanol over Sn-BEC zeolite of homogenous Sn distribution

Guanqun Zhang et al.

MICROPOROUS AND MESOPOROUS MATERIALS (2017)

Review Chemistry, Applied

Lewis Acid Zeolites for Biomass Conversion: Perspectives and Challenges on Reactivity, Synthesis, and Stability

Helen Y. Luo et al.

ANNUAL REVIEW OF CHEMICAL AND BIOMOLECULAR ENGINEERING, VOL 7 (2016)

Article Chemistry, Multidisciplinary

Self-Pillared, Single-Unit-Cell Sn-MFI Zeolite Nanosheets and Their Use for Glucose and Lactose Isomerization

Limin Ren et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2015)

Review Chemistry, Multidisciplinary

Design of Lewis-acid centres in zeolitic matrices for the conversion of renewables

Pierre Y. Dapsens et al.

CHEMICAL SOCIETY REVIEWS (2015)

Article Chemistry, Physical

Heteroatom-Substituted Delaminated Zeolites as Solid Lewis Acid Catalysts

Xiaoying Ouyang et al.

ACS CATALYSIS (2015)

Article Chemistry, Physical

Active Sites in Sn-Beta for Glucose Isomerization to Fructose and Epimerization to Mannose

Ricardo Bermejo-Deval et al.

ACS CATALYSIS (2014)

Article Chemistry, Physical

Heteroatom-Tolerant Delamination of Layered Zeolite Precursor Materials

Isao Ogino et al.

CHEMISTRY OF MATERIALS (2013)

Article Chemistry, Multidisciplinary

Efficient Isomerization of Glucose to Fructose over Zeolites in Consecutive Reactions in Alcohol and Aqueous Media

Shunmugavel Saravanamurugan et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2013)

Article Chemistry, Applied

Hydrothermal synthesis of MWW-type stannosilicate and its post-structural transformation to MCM-56 analogue

Guanqi Liu et al.

MICROPOROUS AND MESOPOROUS MATERIALS (2013)

Article Chemistry, Physical

Synthesis of Expanded Titanosilicate MWW-Related Materials from a Pure Silica Precursor

Manuel Moliner et al.

CHEMISTRY OF MATERIALS (2012)

Article Chemistry, Physical

Framework and Extraframework Tin Sites in Zeolite Beta React Glucose Differently

Ricardo Bermejo-Deval et al.

ACS CATALYSIS (2012)

Article Chemistry, Multidisciplinary

Mechanism of Glucose Isomerization Using a Solid Lewis Acid Catalyst in Water

Yuriy Roman-Leshkov et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2010)

Article Multidisciplinary Sciences

Tin-containing zeolites are highly active catalysts for the isomerization of glucose in water

Manuel Moliner et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2010)

Article Multidisciplinary Sciences

Conversion of Sugars to Lactic Acid Derivatives Using Heterogeneous Zeotype Catalysts

Martin Spangsberg Holm et al.

SCIENCE (2010)

Article Chemistry, Multidisciplinary

Layer structure preservation during swelling, pillaring, and exfoliation of a zeolite precursor

Sudeep Maheshwari et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2008)

Article Chemistry, Physical

In situ monitoring of desilication of MFI-type zeolites in alkaline medium

Johan C. Groen et al.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2007)

Article Chemistry, Multidisciplinary

Preparation of B-free Ti-MWW through reversible structural conversion

P Wu et al.

CHEMICAL COMMUNICATIONS (2002)