气溶胶辅助水热法无氟合成板状sn - β沸石

IF 4.8 3区材料科学 Q1 CHEMISTRY, APPLIED

Microporous and Mesoporous Materials Pub Date : 2025-05-10 DOI:10.1016/j.micromeso.2025.113682

Xueying Xie , Siyang Yan , Weiming Zhai , Zhenlei Zhang , Liping Liu , Jiaxu Liu , Guang Xiong , Feng Liu

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引用次数: 0

摘要

n- β沸石是一种用途广泛的非均相路易斯酸催化剂。本文报道了一种无氟气溶胶辅助水热合成板状sn - β沸石的方法，克服了传统的氟化水热法所带来的环境问题。通过改变种子类型、种子负荷、模板剂用量、结晶次数等因素对合成工艺进行优化，得到了相对结晶度高、介孔孔容大的板状sn - β沸石。此外，与传统的氟化物辅助水热法合成的样品相比，用该方法合成的沸石在2-金刚烷酮的Baeyer-Villiger氧化中表现出更好的催化性能。系统地比较了两种样品的理化特性。催化性能的增强可归因于它们更大的外表面积，更容易接近大分子。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Fluoride-free synthesis of plate-like Sn-Beta zeolite via aerosol-assisted hydrothermal route

Sn-Beta zeolite is a versatile heterogeneous Lewis acid catalyst. Herein, we report a fluoride-free aerosol-assisted hydrothermal synthesis of plate-like Sn-Beta zeolite, which overcomes the environmental problems caused by traditional fluorinated hydrothermal method. The synthesis process, after the optimation by varying seed types, seed loadings, templating agent amounts, and crystallization times, results in the plate-like Sn-Beta zeolite with high relative crystallinity and mesoporous pore volume. Furthermore, the zeolites synthesized using this method exhibit superior catalytic performance in the Baeyer-Villiger oxidation of 2-adamantanone as compared to the sample synthesized by traditional fluoride-assisted hydrothermal method. The physicochemical characteristics of the two samples have been systematically compared. The enhancement of catalytic performance can be ascribed to their greater external surface area, which is more accessible to large molecules.

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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.