scholarly journals Quantitative imaging of carbon in heterogeneous refining catalysts

2020 ◽  
Vol 35 (5) ◽  
pp. 896-903
Author(s):  
L. Jolivet ◽  
V. Motto-Ros ◽  
L. Sorbier ◽  
T. Sozinho ◽  
C.-P. Lienemann
Keyword(s):  
Sample Preparation ◽  
Data Acquisition ◽  
Heterogeneous Catalyst ◽  
Quantitative Imaging ◽  
Spectroscopy Method ◽  
Laser Induced Breakdown Spectroscopy ◽  
Catalyst Supports ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Data Acquisition And Processing

A laser-induced breakdown spectroscopy method, from sample preparation to data acquisition and processing, is proposed to quantitatively map carbon on heterogeneous catalyst supports.

Design of a Laser-Induced Breakdown Spectroscopy System for On-Line Quality Analysis of Pulverized Coal in Power Plants

2009 ◽  
Vol 63 (8) ◽  
pp. 865-872 ◽  
Author(s):  
Wangbao Yin ◽  
Lei Zhang ◽  
Lei Dong ◽  
Weiguang Ma ◽  
Suotang Jia
Keyword(s):  
Sample Preparation ◽  
Measurement Errors ◽  
Power Plants ◽  
Pulverized Coal ◽  
Quality Analysis ◽  
Laser Induced Breakdown Spectroscopy ◽  
Gas Cleaning ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
On Line

It is vitally important for a power plant to determine the chemical composition of coal prior to combustion in order to obtain optimal boiler control. In this work, a fully software-controlled laser-induced breakdown spectroscopy (LIBS) system comprising a LIBS apparatus and sampling equipment has been designed for possible application to power plants for on-line quality analysis of pulverized coal. Special attention was given to the LIBS system, the data processing methods (especially the normalization with Bode Rule/DC Level) and the specific settings (the software-controlled triggering source, high-pressure gas cleaning device, sample-preparation module, sampling module, etc.), which gave the best direct measurement for C, H, Si, Na, Mg, Fe, Al, and Ti with measurement errors less than 10% for pulverized coal. Therefore, the apparatus is accurate enough to be applied to industries for on-line monitoring of pulverized coal. The method of proximate analysis was also introduced and the experimental error of Aad (Ash, ‘ad’ is an abbreviation for ‘air dried’) was shown in the range of 2.29 to 13.47%. The programmable logic controller (PLC) controlled on-line coal sampling equipment, which is designed based upon aerodynamics, and is capable of performing multipoint sampling and sample-preparation operation.

Analysis of Cuban nickeliferous minerals by laser-induced breakdown spectroscopy (LIBS): non-conventional sample preparation of powder samples

2018 ◽  
Vol 10 (5) ◽  
pp. 533-540 ◽  
Author(s):  
Marco Aurelio Sperança ◽  
Mario Siméon Pomares-Alfonso ◽  
Edenir Rodrigues Pereira-Filho
Keyword(s):  
Sample Preparation ◽  
New Method ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Powder Samples ◽  
Conventional Sample

In the present study, a new method to quantify Al, Cr, Fe, Mg, Mn, and Ni in nickeliferous minerals by laser-induced breakdown spectroscopy (LIBS) is proposed.

Sign in / Sign up

Export Citation Format

Share Document