Continuous Flow β‐Zeolite Mediated Regioselective Alkylation of Naphthols Using Alcohols for Peroxynaphthalen‐2(1H)‐one, Azidonaphthalen‐2(1H)‐one and Fluoronaphthalen‐2(1H)‐one
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DOI: 10.1002/ajoc.202400658
Abstract: Herein, we demonstrated continuous flow alkylation of α‐ and β‐naphthols by using various primary and secondary benzylic alcohols in the presence of environmentally benign granular β‐zeolite as a reusable catalyst. For a variety of β‐naphthols,… read more here.
Keywords: zeolite; naphthols using; peroxynaphthalen one; continuous flow ... See more keywords
Optimization of the Reaction Conditions for Catalytic Fast Pyrolysis of Pretreated Lignin over Zeolite for the Production of Phenol
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DOI: 10.1002/cctc.201601674
Abstract: The catalytic fast pyrolysis of lignin for the production of phenols over commercial zeolites was studied in‐depth. The results show that the production of phenols depended on several parameters, such as lignin pretreatment methods, pyrolysis… read more here.
Keywords: production; fast pyrolysis; zeolite; lignin ... See more keywords
Fine‐Tuning Texture of Highly Acidic HZSM‐5 Zeolite for Efficient Ethanol Dehydration
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DOI: 10.1002/cctc.202201387
Abstract: Achieving high and stable ethylene yield from (bio)ethanol dehydration over highly active acidic zeolite remains challenging due to undesired side‐reactions. To overcome this issue, the fine‐tuned textural property of the HZSM‐5 catalyst with a hierarchical… read more here.
Keywords: dehydration; zeolite; ethanol dehydration; ethylene yield ... See more keywords
Effects of Acid Sites on Thin MCM‐22 Zeolite Catalysts and Their Catalytic Applications for Acetylene Aromatization
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DOI: 10.1002/cctc.202401302
Abstract: Two types of thin zeolite MCM‐22 catalysts were prepared by using a carbon sphere template. By applying different calcination methods, a hollow sphere‐type MCM‐22 catalyst (HS‐MCM‐22) and a nanosheet‐type MCM‐22 catalyst (NS‐MCM‐22) were synthesized. Those… read more here.
Keywords: zeolite; thin mcm; mcm catalyst; mcm ... See more keywords
Comparison of Various Phosphine Additives in Zeolite Based Catalytic Isomerization of Oleic Acid
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DOI: 10.1002/ejlt.201800070
Abstract: Isostearic acids (ISA) are important bio‐based ingredients for many commercial products such as lubricants, detergents, and cosmetics. This study is targeted to compare the efficacy of various phosphine derivatives in neutralizing the external acidic surface… read more here.
Keywords: phosphine additives; zeolite; phosphine; various phosphine ... See more keywords
L−Lysine Amino Acid Adsorption on Zeolite L: a Combined Synchrotron, X‐Ray and Neutron Diffraction Study
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DOI: 10.1002/open.202000183
Abstract: Abstract Combined neutron and X‐ray powder diffraction techniques highlighted the sorption capacity of the acidic L zeolite towards the L‐lysine amino acid. The role of zeolite channels in the stabilization of the lysine absorbed and… read more here.
Keywords: amino acid; zeolite; lysine amino; diffraction ... See more keywords
Hollow Zeolite Nanoreactor with Double Shells for Methanol Aromatization: Explicit Recognition on Catalytic Function of Inverse Elemental Zone and Shell-Cavity.
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DOI: 10.1002/smll.202308502
Abstract: Core@shell catalyst composited of dual aluminosilicate zeolite can effectively regulate the distribution of acid sites to control hydrocarbon conversion process for the stable formation of target product. However, the diffusion restriction reduces the accessibility of… read more here.
Keywords: shell; core shell; zeolite; zeolite nanoreactor ... See more keywords
Atmospheric Pressure Alkaline Etching of MFI Zeolite Under Mild Temperature Toward Hollow Microstructure and Ultralow k Film
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DOI: 10.1002/smtd.202400167
Abstract: Constructing a hollow structure inside zeolite is very helpful for improving its performance. Unlike the conventional alkaline etching technique usually operated at high temperature (typically 170 °C) and high pressure (autogenerated in autoclave), here, it… read more here.
Keywords: temperature; alkaline etching; zeolite; atmospheric pressure ... See more keywords
Preparation and characterization of nanocomposites based on different zeolite frameworks as carriers for anticancer drug: zeolite Y versus ZSM-5
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DOI: 10.1007/s00289-018-2472-1
Abstract: This research was to investigate and characterize different types of zeolites, i.e., Y and ZSM-5 as well as their corresponding nanocomposite of PEG (PEG/Y and PEG/ZSM-5), as carrier for loading and release of curcumin. Zeolites… read more here.
Keywords: zsm; zeolite; drug; peg peg ... See more keywords
Adsorption characteristics of light gases on basalt rock-based zeolite 4A
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DOI: 10.1007/s10450-019-00086-6
Abstract: The adsorption characteristics of light gases on basalt rock-based zeolite 4A (BR zeolite-4A) were systematically investigated to evaluate its potential application as an alternative adsorbent for adsorption-based separation processes. We used alkali fusion and hydrothermal… read more here.
Keywords: adsorption; zeolite; light gases; adsorption characteristics ... See more keywords
Studies on Structural Changes and Catalytic Activity of Y-zeolite Composites of 1,3-disulfoimidazolium trifluoroacetate Ionic Liquid (IL) for Three Component Synthesis of 3,4-dihydropyrimidinones
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DOI: 10.1007/s10562-016-1922-3
Abstract: This report describes the development of six acidic composites of Y-zeolite with 1,3-disulfoimidazolium trifluoroacetate [Dsim][CF3COO] ionic liquid (IL) and displays the gradual increase of acidic IL mediated dealumination within zeolite framework with increasing loading in… read more here.
Keywords: structural changes; studies structural; ionic liquid; disulfoimidazolium trifluoroacetate ... See more keywords