The support affects the catalytic conversion in thymol hydrogenation reaction

IF 4.8 3区材料科学 Q1 CHEMISTRY, APPLIED

Microporous and Mesoporous Materials Pub Date : 2025-01-17 DOI:10.1016/j.micromeso.2025.113507

Fateme Poorsharbaf Ghavi , Martin Kubů , Oleg Petrov , Monika Remzová , Subhajyoti Samanta , Jan Přech , Maksym Opanasenko

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Abstract

Hydrogenation of the aromatic ring in phenolic compounds is an important reaction in industry and in the synthesis of fine chemicals. Pd-supported catalysts have proved to be highly active and efficient in deep hydrogenation of aromatic ring. Previous studies confirmed that the acidity and topology properties of the support play an important role in the efficient transformation of the phenolic reactant. In this study, we have investigated the effect of these two parameters by designing advanced layered MFI and MWW zeolites. To understand the effect of acidity, we compared the catalytic performance of a series of Pd/MFI catalysts that significantly differed in the acidity of the support. Then, we compared the catalytic results from Pd on aluminosilicate MFI and Pd/MCM-56 to see the effect of the support's topology. Thymol was used as a model phenolic reactant, and the results confirmed that not only the Pd on non-acidic MFI support was inactive (conversions below 25 %), but also the acidity of the MFI support led to higher thymol conversion (47 %), while more weak acid centers and silanol groups in dealuminated MFI topped up the outcome (100 % conversion). Data also showed that between two aluminosilicate supports, the MWW outperformed MFI (100 % vs. 47 %), due to its topology and morphology for better accommodating thymol and interacting with it.

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来源期刊

Microporous and Mesoporous Materials 化学-材料科学：综合

CiteScore

10.70

自引率

5.80%

发文量

649

审稿时长

26 days

期刊介绍： Microporous and Mesoporous Materials covers novel and significant aspects of porous solids classified as either microporous (pore size up to 2 nm) or mesoporous (pore size 2 to 50 nm). The porosity should have a specific impact on the material properties or application. Typical examples are zeolites and zeolite-like materials, pillared materials, clathrasils and clathrates, carbon molecular sieves, ordered mesoporous materials, organic/inorganic porous hybrid materials, or porous metal oxides. Both natural and synthetic porous materials are within the scope of the journal. Topics which are particularly of interest include: All aspects of natural microporous and mesoporous solids The synthesis of crystalline or amorphous porous materials The physico-chemical characterization of microporous and mesoporous solids, especially spectroscopic and microscopic The modification of microporous and mesoporous solids, for example by ion exchange or solid-state reactions All topics related to diffusion of mobile species in the pores of microporous and mesoporous materials Adsorption (and other separation techniques) using microporous or mesoporous adsorbents Catalysis by microporous and mesoporous materials Host/guest interactions Theoretical chemistry and modelling of host/guest interactions All topics related to the application of microporous and mesoporous materials in industrial catalysis, separation technology, environmental protection, electrochemistry, membranes, sensors, optical devices, etc.