Multi-line SiO fluorescence imaging in the flame synthesis of silica nanoparticles from SiCl4

被引：13

作者：

El Moussawi, Abbas ^{[1
]}

Endres, Torsten ^{[1
]}

Peukert, Sebastian ^{[1
]}

Zabeti, Siavash ^{[1
]}

Dreier, Thomas ^{[1
]}

Fikri, Mustapha ^{[1
]}

Schulz, Christof ^{[1
]}

机构：

[1] Univ Duisburg Essen, Inst Combust & Gas Dynam React Fluids & CENIDE, Ctr Nanointegrat Duisburg Essen, IVG, D-47057 Duisburg, Germany

来源：

COMBUSTION AND FLAME | 2021年 / 224卷

关键词：

SiO; Flame synthesis of nanoparticles; Laser-induced fluorescence imaging; Shock tube; High-temperature reaction mechanism; LASER-INDUCED FLUORESCENCE; CHEMICAL-VAPOR-DEPOSITION; HIGH-PRESSURE FLAMES; GAS-PHASE SYNTHESIS; SHOCK-TUBE; RADIATIVE LIFETIMES; REACTION-MECHANISM; AEROSOL SYNTHESIS; AB-INITIO; SCALE-UP;

D O I：

10.1016/j.combustflame.2020.12.020

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Flame synthesis is a powerful and scalable method for generating nanoparticles for a wide range of applications. The chemical interaction of the flame and the precursor combined with the spatial and temporal temperature distribution determine the product properties. For controlled nanoparticle synthesis that can also be scaled to industrial production rates, detailed knowledge of the underlying chemical kinetics and their interaction with the reactive flow is essential. Laser diagnostics has the capability to analyze the process by probing the concentration of important intermediates in shock tubes and reactive flows. The gas-phase synthesis of silica nanoparticles from SiCl4 in a premixed H-2/O-2 low-pressure flame reactor is studied by laser-induced fluorescence imaging of SiO mole fractions and temperature. The literature value-based spectroscopy model of SiO used for fitting the LIF spectra are validated based on absorption cross-sections measurements in a shock tube, where SiO is formed under precisely defined conditions (temperature, pressure, mole fraction) using a well-known kinetics mechanism for SiH4/CO2/Ar decomposition. Based on literature sources, a reaction mechanism is assembled to describe the oxidation of SiCl4 in the flame, which is then compared to the measured SiO mole fractions distribution to shed light on the current state of the understanding of SiCl4 combustion chemistry and to direct further refinements. (C) 2020 The Author(s). Published by Elsevier Inc. on behalf of The Combustion Institute.

引用

页码：260 / 272

页数：13

共 90 条

[1] Spray-Flame-Prepared LaCo1-xFexO3Perovskite Nanoparticles as Active OER Catalysts: Influence of Fe Content and Low-Temperature Heating [J].

Alkan, Baris ;

Medina, Danea ;

Landers, Joachim ;

Heidelmann, Markus ;

Hagemann, Ulrich ;

Salamon, Soma ;

Andronescu, Corina ;

Wende, Heiko ;

Schulz, Christof ;

Schuhmann, Wolfgang ;

Wiggers, Hartmut .

CHEMELECTROCHEM, 2020, 7 (12) :2564-2574

[2]

[Anonymous], 1951, Am. J. Phys, DOI DOI 10.1119/1.1932852

[3]

ANSYS, 2020, CHEMK PRO

[4]

Babushok VI, 1998, TWENTY-SEVENTH SYMPOSIUM (INTERNATIONAL) ON COMBUSTION, VOLS 1 AND 2, P2431

[5]

BAULCH DL, 1981, J PHYS CHEM REF DATA, V10, P1

[6] SILICON MONOXIDE RADICAL AND ATMOSPHERE OF ALPHA-ORIONIS [J].

BEER, R ;

LAMBERT, DL ;

SNEDEN, C .

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1974, 86 (513) :806-812

[7]

Bernath P. F., 2005, Spectra of Atoms and Molecules, V2nd

[8] Quantitative multi-line NO-LIF temperature imaging [J].

Bessler, WG ;

Schulz, C .

APPLIED PHYSICS B-LASERS AND OPTICS, 2004, 78 (05) :519-533

[9] Strategies for laser-induced fluorescence detection of nitric oxide in high-pressure flames.: I.: A-X(0,0) excitation [J].

Bessler, WG ;

Schulz, C ;

Lee, T ;

Jeffries, JB ;

Hanson, RK .

APPLIED OPTICS, 2002, 41 (18) :3547-3557

[10]

Binnewies M, 2000, EUR J INORG CHEM, P1127

← 1 2 3 4 5 6 7 8 9 →