一种具有增强加氢脱氮性能的有序多孔沸石载体Ni2P催化剂的合成策略

IF 4.8 3区材料科学 Q1 CHEMISTRY, APPLIED

Microporous and Mesoporous Materials Pub Date : 2025-04-21 DOI:10.1016/j.micromeso.2025.113651

Xiao Zhang , Yuan Zhuang , Shuqin Liang , Hanzhang Gong , Jian Liu

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引用次数: 0

摘要

采用自底向上模板法合成了有序大孔β分子筛（OMbeta）载体，并用于制备高活性的Ni2P（磷化镍）氢脱氮催化剂（HDN）。通过详细表征，阐明了有序多孔β分子筛的形成机理。扫描电镜图像显示，β沸石由~ 250 nm的球形晶体组成，以蛋白石状排列密集排列，由于合成过程中的收缩，晶体之间形成了~ 55 nm的空隙。这种相互连接的微孔-大孔结构显著改善了反应物的扩散，促进了Ni2P的均匀分散。结果表明，与传统β分子筛上负载的Ni2P相比，Ni2P/OMbeta催化剂表现出更高的喹啉HDN活性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

A strategy for synthesizing an ordered porous beta zeolite support for Ni2P catalysts with enhanced hydrodenitrogenation performance

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A strategy for synthesizing an ordered porous beta zeolite support for Ni2P catalysts with enhanced hydrodenitrogenation performance

An ordered macroporous Beta zeolite (OMbeta) support was synthesized via a bottom-up templating strategy and used to prepare a highly active Ni₂P (nickel phosphide) catalyst for hydrodenitrogenation (HDN). The formation mechanism of the ordered porous Beta zeolite was elucidated through detailed characterization. SEM images reveal that the Beta zeolite is composed of ∼250 nm spherical crystals, densely packed in an opal-like arrangement, with ∼55 nm voids forming between the crystallites due to shrinkage during synthesis. This interconnected microporous–macroporous structure significantly improves reactant diffusion and facilitates uniform Ni₂P dispersion. As a result, the Ni₂P/OMbeta catalyst exhibits enhanced quinoline HDN activity compared to Ni₂P supported on conventional Beta zeolite.

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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.