A Janus-type Heterogeneous Surfactant for Adipic Acid Synthesis
Majid Vafaeezadeh,Christian Wilhelm,Paul Breuninger,Stefan Ernst,Sergiy Antonyuk,Werner R. Thiel +5 more
TL;DR: In this article, a highly waterdispersible heterogeneous Brønsted acid surfactant was prepared by synthesis of a bi-functional anisotropic Janus-type material.
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Abstract: A highly water‐dispersible heterogeneous Brønsted acid surfactant was prepared by synthesis of a bi‐functional anisotropic Janus‐type material. The catalyst comprises ionic functionalities on one side and propyl‐SO3H groups on the other. The novel material was investigated as a green substitute of a homogeneous acidic phase transfer catalyst (PTC). The activity of the catalyst was investigated for the aqueous‐phase oxidation of cyclohexene to adipic acid with 30 % hydrogen peroxide even in a decagram‐scale. It can also be used for the synthesis of some other carboxylic acid derivatives as well as diethyl phthalate.
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Citations
Task‐Specific Janus Materials in Heterogeneous Catalysis
TL;DR: In this article , the authors systematically cover recent and significant achievements in the application of task-specific Janus nanomaterials as heterogeneous catalysts in various types of chemical reactions, including reduction, oxidative desulfurization and dye degradation.
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Janus interphase catalysts for interfacial organic reactions
TL;DR: In this paper, the authors put forward the concept of so-called Janus interphase catalysis, which is based on a rational design of double-faced functionalized heterogeneous catalysts.
20
Janus Composite Particles and Interfacial Catalysis Thereby.
TL;DR: In this article , a review of typical methods to synthesize the JPs with varied morphologies are briefly surveyed in the category of polymeric, inorganic and polymer/inorganic composite.
7
Fast and Selective Aqueous-Phase Oxidation of Styrene to Acetophenone Using a Mesoporous Janus-Type Palladium Catalyst.
TL;DR: In this article, a heterogeneous Janus-type palladium interphase catalyst was obtained by selective surface modification of a hollow mesoporous silica material, which comprises hydrophobic octyl groups on one side of the silica nanosheets and single-site bis-imidazoline dichlorido palladium(II) complexes on the other.
7
Biodiesel and adipic acid production using molybdenum(VI) complex of a bis(phenol) diamine ligand supported on Fe3O4 magnetic nanoparticles
P. Mohammadpour,Elham Safaei +1 more
TL;DR: In this article , a homogeneous Mo(VI)-dioxo complex including tetradentate bis(phenol) diamine ligand covalently grafted onto amine-functionalized heterogeneous magnetic nanoparticles has been synthesized.
5
References
Janus mesoporous silica nanosheets with perpendicular mesochannels: affording highly accessible reaction interfaces for enhanced biphasic catalysis.
TL;DR: A Janus mesosilica nanosheet with perpendicular mesochannels has been explored to use as a highly efficient interfacial catalyst for biphasic reactions and significantly enhanced catalytic activity is presented in aqueous hydrogenation reactions.
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Large scale synthesis of Janus submicron sized colloids by wet etching anisotropic ones.
TL;DR: A facile approach to fabricate Janus submicron sized colloids by the selective etching of anisotropic colloids is presented, which can be scaled up, which is the key to further exploit practical applications.
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Synthesis of a reusable oxotungsten-containing SBA-15 mesoporous catalyst for the organic solvent-free conversion of cyclohexene to adipic acid
Ching-Yuan Cheng,Kuan-Jiuh Lin,Muppa Ramakrishna Prasad,Shu-Juan Fu,Sheng-Yueh Chang,Shin-Guang Shyu,Hwo-Shuen Sheu,Chia-Hao Chen,Cheng-Hao Chuang,Minn-Tsong Lin +9 more
TL;DR: An oxotungsten-silica mesoporous structure (WSBA-15) has a hierarchical crystalline architecture in which the W dopants possess tetrahedral coordination geometries for the mixed-valence states W6+, W5+, and W4+.
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Titanium and cerium-containing mesoporous silicate materials as catalysts for oxidative cleavage of cyclohexene with H2O2: A comparative study of catalytic activity and stability
TL;DR: In this article, the catalytic properties of transition-metal-containing silicate materials with hexagonally packed mesopore-channels, such as Ti-MMM-2 and Ce-SBA-15, have been studied in oxidative cleavage of cyclohexene (CyH) to adipic acid using aqueous H2O2 as oxidant.
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A “one-pot” synthesis of adipic acid from cyclohexene under mild conditions with new bifunctional Ti-AlSBA mesostructured catalysts
TL;DR: In this article, a bifunctional Ti-AlSBA15 catalysts are presented for the synthesis of adipic acid. But they are not suitable for use in the one-pot synthesis.
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