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煅烧条件对负载于SBA-15上的铁氧化物种的结构和固态动力学性质的影响

Influence of Calcination Conditions on Structural and Solid-State Kinetic Properties of Iron Oxidic Species Supported on SBA-15.

作者信息

Genz Nina Sharmen, Ressler Thorsten

机构信息

Institut für Chemie Technische Universität Berlin Straße des 17. Juni 135 10623 Berlin Germany.

出版信息

ChemistryOpen. 2019 Oct 17;8(10):1276-1287. doi: 10.1002/open.201900236. eCollection 2019 Oct.

DOI:10.1002/open.201900236
PMID:31637151
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6796702/
Abstract

Iron oxidic species supported on silica SBA-15 were synthesized with various iron loadings using two different Fe precursors. The effect of varying powder layer thickness during calcination on structural and solid-state kinetic properties of FeO/SBA-15 samples was investigated. Calcination was conducted in thin (0.3 cm) or thick (1.3 cm) powder layer. Structural characterization of resulting FeO/SBA-15 samples was performed by nitrogen physisorption, X-ray diffraction, and DR-UV/Vis spectroscopy. Thick powder layer during calcination induced an increased species size independent of the precursor. However, a significantly more pronounced influence of calcination mode on species size was observed for the Fe nitrate precursor compared to the Fe citrate precursor. Temperature-programmed reduction (TPR) experiments revealed distinct differences in reducibility and reduction mechanism dependent on calcination mode. Thick layer calcination of the samples obtained from Fe nitrate precursor resulted in more pronounced changes in TPR profiles compared to samples obtained from Fe citrate precursor. TPR traces were analyzed by model-dependent Coats-Redfern method and model-independent Kissinger method. Differences in solid-state kinetic properties of FeO/SBA-15 samples dependent on powder layer thickness during calcination correlated with differences in iron oxidic species size.

摘要

使用两种不同的铁前驱体合成了负载在二氧化硅SBA - 15上的具有不同铁负载量的铁氧化物种。研究了煅烧过程中粉末层厚度变化对FeO/SBA - 15样品结构和固态动力学性质的影响。煅烧在薄（0.3 cm）或厚（1.3 cm）粉末层中进行。通过氮气物理吸附、X射线衍射和DR - UV/Vis光谱对所得FeO/SBA - 15样品进行结构表征。煅烧过程中的厚粉末层导致物种尺寸增大，且与前驱体无关。然而，与柠檬酸铁前驱体相比，硝酸铁前驱体在煅烧模式对物种尺寸的影响上更为显著。程序升温还原（TPR）实验揭示了取决于煅烧模式的还原度和还原机制的明显差异。与从柠檬酸铁前驱体制备的样品相比，从硝酸铁前驱体制备的样品进行厚层煅烧导致TPR曲线有更明显的变化。通过依赖模型的Coats - Redfern方法和不依赖模型的Kissinger方法对TPR曲线进行分析。FeO/SBA - 15样品的固态动力学性质在煅烧过程中取决于粉末层厚度的差异与铁氧化物种尺寸的差异相关。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/da5f/6796702/57bc9780874d/OPEN-8-1276-g010.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/da5f/6796702/d46c008e36e1/OPEN-8-1276-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/da5f/6796702/cdc72dc6ce38/OPEN-8-1276-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/da5f/6796702/57bc9780874d/OPEN-8-1276-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/da5f/6796702/68f67f4c9ff2/OPEN-8-1276-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/da5f/6796702/60137ba596ea/OPEN-8-1276-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/da5f/6796702/d594cacbd702/OPEN-8-1276-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/da5f/6796702/6b511727f245/OPEN-8-1276-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/da5f/6796702/d46c008e36e1/OPEN-8-1276-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/da5f/6796702/cdc72dc6ce38/OPEN-8-1276-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/da5f/6796702/57bc9780874d/OPEN-8-1276-g010.jpg

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本文引用的文献

1
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J Anal Methods Chem. 2017;2017:6205297. doi: 10.1155/2017/6205297. Epub 2017 Nov 1.
2
Solid-state kinetic models: basics and mathematical fundamentals.固态动力学模型：基础与数学原理
J Phys Chem B. 2006 Sep 7;110(35):17315-28. doi: 10.1021/jp062746a.
3
Basics and applications of solid-state kinetics: a pharmaceutical perspective.固态动力学的基础与应用：药学视角
J Pharm Sci. 2006 Mar;95(3):472-98. doi: 10.1002/jps.20559.
4
Kinetics in solids.固体中的动力学
Annu Rev Phys Chem. 1997;48:125-49. doi: 10.1146/annurev.physchem.48.1.125.
5
Multilayer adsorption on a fractally rough surface.分形粗糙表面上的多层吸附。
Phys Rev Lett. 1989 Apr 24;62(17):1997-2000. doi: 10.1103/PhysRevLett.62.1997.
6
Triblock copolymer syntheses of mesoporous silica with periodic 50 to 300 angstrom pores.具有50至300埃周期性孔的介孔二氧化硅的三嵌段共聚物合成。
Science. 1998 Jan 23;279(5350):548-52. doi: 10.1126/science.279.5350.548.