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Title: High Throughput Operando Studies using Fourier Transform Infrared Imaging and Raman Spectroscopy

Abstract

A prototype operando high throughput (OHT) reactor designed and built for catalyst screening and characterization combines Fourier transform infrared (FT-IR) imaging and Raman spectroscopy in operando conditions. Using a focal plane array (FPA) detector (HgCdTe FPA, 128×128 pixels, and 1,610 Hz frame rate) for the FT-IR imaging system, the catalyst activity and selectivity of all parallel reaction channels can be simultaneously followed. Each image dataset possesses16,384 IR spectra with a spectral range of 800 to 4000 cm-1 with an 8 cm-1 resolution. Depending on the signal-to-noise ratio, 2 to 20 seconds are needed to generate a full image of all reaction channels from a dataset. Results on reactant conversion and product selectivity are obtained from FT-IR spectral analysis. Six novel Raman probes, one for each reaction channel, were specially designed and house built at Pacific Northwest National Laboratory (PNNL), to simultaneously collect Raman spectra of the catalysts and possible reaction intermediates on the catalyst surface under operando conditions. As a model system, methanol partial oxidation reaction on silica-supported molybdenum oxide (MoO3/SiO2) catalysts has been studied under different reaction conditions to demonstrate the performance of the OHT reactor.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
947908
Report Number(s):
PNNL-SA-60652
Journal ID: ISSN 0034-6748; RSINAK; 21610; 25401; TRN: US200905%%304
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments, 79:074101
Additional Journal Information:
Journal Volume: 79; Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
10 SYNTHETIC FUELS; CATALYSTS; METHANOL; MOLYBDENUM OXIDES; OXIDATION; PERFORMANCE; PROBES; RAMAN SPECTRA; RAMAN SPECTROSCOPY; REACTION INTERMEDIATES; RESOLUTION; SIGNAL-TO-NOISE RATIO; SPECTRA; Fourier Transform Infrared; Raman Spectroscopy; Environmental Molecular Sciences Laboratory

Citation Formats

Li, Guosheng, Hu, Dehong, Xia, Guanguang, White, John M, and Zhang, Z Conrad. High Throughput Operando Studies using Fourier Transform Infrared Imaging and Raman Spectroscopy. United States: N. p., 2008. Web. doi:10.1063/1.2949389.
Li, Guosheng, Hu, Dehong, Xia, Guanguang, White, John M, & Zhang, Z Conrad. High Throughput Operando Studies using Fourier Transform Infrared Imaging and Raman Spectroscopy. United States. https://doi.org/10.1063/1.2949389
Li, Guosheng, Hu, Dehong, Xia, Guanguang, White, John M, and Zhang, Z Conrad. 2008. "High Throughput Operando Studies using Fourier Transform Infrared Imaging and Raman Spectroscopy". United States. https://doi.org/10.1063/1.2949389.
@article{osti_947908,
title = {High Throughput Operando Studies using Fourier Transform Infrared Imaging and Raman Spectroscopy},
author = {Li, Guosheng and Hu, Dehong and Xia, Guanguang and White, John M and Zhang, Z Conrad},
abstractNote = {A prototype operando high throughput (OHT) reactor designed and built for catalyst screening and characterization combines Fourier transform infrared (FT-IR) imaging and Raman spectroscopy in operando conditions. Using a focal plane array (FPA) detector (HgCdTe FPA, 128×128 pixels, and 1,610 Hz frame rate) for the FT-IR imaging system, the catalyst activity and selectivity of all parallel reaction channels can be simultaneously followed. Each image dataset possesses16,384 IR spectra with a spectral range of 800 to 4000 cm-1 with an 8 cm-1 resolution. Depending on the signal-to-noise ratio, 2 to 20 seconds are needed to generate a full image of all reaction channels from a dataset. Results on reactant conversion and product selectivity are obtained from FT-IR spectral analysis. Six novel Raman probes, one for each reaction channel, were specially designed and house built at Pacific Northwest National Laboratory (PNNL), to simultaneously collect Raman spectra of the catalysts and possible reaction intermediates on the catalyst surface under operando conditions. As a model system, methanol partial oxidation reaction on silica-supported molybdenum oxide (MoO3/SiO2) catalysts has been studied under different reaction conditions to demonstrate the performance of the OHT reactor.},
doi = {10.1063/1.2949389},
url = {https://www.osti.gov/biblio/947908}, journal = {Review of Scientific Instruments, 79:074101},
issn = {0034-6748},
number = ,
volume = 79,
place = {United States},
year = {Tue Jul 01 00:00:00 EDT 2008},
month = {Tue Jul 01 00:00:00 EDT 2008}
}