基于磁铁矿的磁性可回收纳米催化剂：一种环保且可回收的酯化反应催化剂

IF 14.4 Q1 ENERGY & FUELS

Biofuel Research Journal-BRJ Pub Date : 2018-06-01 DOI:10.18331/BRJ2018.5.2.4

V. C. D. Santos-Durndell, T. Peruzzolo, G. M. Ucoski, L. Ramos, S. Nakagaki

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引用次数: 17

摘要

采用廉价原料制备了由Fe3O4和包覆二氧化硅(Fe3O4/SiO2 = Mag/Si)的磁铁矿组成的固体磁性纳米颗粒(磁铁矿= Mag)。研究了固体在溶剂热条件下对棕榈酸与甲醇酯化反应的催化活性。纯Fe3O4 (Mag)和二氧化硅包覆(Mag/Si)纳米颗粒均表现出较高的催化活性，并且易于通过外磁铁从反应环境中回收。此外，磁性纳米颗粒催化剂可重复使用，在典型的酸催化反应中没有明显的催化活性损失，并表现出较高的耐久性。在酯化前后进行XRD和SEM分析，发现新鲜催化剂和重复使用催化剂的颗粒分布几乎相同。

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Magnetically recyclable nanocatalysts based on magnetite: an environmentally friendly and recyclable catalyst for esterification reactions

Solid magnetic nanoparticles (magnetite = Mag) composed of Fe3O4 and magnetite coated with silica (Fe3O4/SiO2 = Mag/Si) were prepared from inexpensive starting materials. The catalytic activity of the solids was investigated for palmitic acid esterification with methanol under solvothermal conditions. Both pure Fe3O4 (Mag) and silica-coated (Mag/Si) nanoparticles exhibited high catalytic activities and were easy to recover from the reaction environment using an external magnet. Furthermore, the magnetic nanoparticle catalysts were reused without significant loss of catalytic activity and showed high durability in typical acid-catalyzed reactions. XRD and SEM analyses were conducted before and after esterification, showing almost identical particle distribution in both fresh and reused catalysts.

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来源期刊

Biofuel Research Journal-BRJ ENERGY & FUELS-

CiteScore

22.10

自引率

1.50%

发文量

审稿时长

8 weeks

期刊介绍： Biofuel Research Journal (BRJ) is a leading, peer-reviewed academic journal that focuses on high-quality research in the field of biofuels, bioproducts, and biomass-derived materials and technologies. The journal's primary goal is to contribute to the advancement of knowledge and understanding in the areas of sustainable energy solutions, environmental protection, and the circular economy. BRJ accepts various types of articles, including original research papers, review papers, case studies, short communications, and hypotheses. The specific areas covered by the journal include Biofuels and Bioproducts, Biomass Valorization, Biomass-Derived Materials for Energy and Storage Systems, Techno-Economic and Environmental Assessments, Climate Change and Sustainability, and Biofuels and Bioproducts in Circular Economy, among others. BRJ actively encourages interdisciplinary collaborations among researchers, engineers, scientists, policymakers, and industry experts to facilitate the adoption of sustainable energy solutions and promote a greener future. The journal maintains rigorous standards of peer review and editorial integrity to ensure that only impactful and high-quality research is published. Currently, BRJ is indexed by several prominent databases such as Web of Science, CAS Databases, Directory of Open Access Journals, Scimago Journal Rank, Scopus, Google Scholar, Elektronische Zeitschriftenbibliothek EZB, et al.