Ideal for monitoring adsorbed species in a powder catalyst bed, giving insight into adsorption/desorption kinetics and catalyst availability.

Ideal for monitoring adsorbed species in a powder catalyst bed, giving insight into adsorption/desorption kinetics and catalyst availability.
Dive into the role of spectroscopy in the study of catalysed reactions with our infographic.
This free infographic reveals how DRIFTS enables real-time, in situ analysis of surface chemistry, helping researchers monitor reaction intermediates, track adsorption/desorption events, and detect early signs of catalyst degradation.


The Reece Lab, part of the Rowland Institute, Havard University, has been developing novel methods for catalyst characterisation using spectroscopic tools. A detailed understanding of the reaction kinetics for solid-gas heterogeneous catalysis aids the design of future catalyst systems for efficient chemical production and energy production. Modulation excitation spectroscopy (MES) combined with Diffuse Reflectance Infrared Fourier Transform spectroscopy (DRIFTS) is a technique that has potential to uncover insights into the transient responses of catalyst systems. Read Application note.
Well controlled gas pulsing experiments at reaction temperatures under intermediate pressures on supported catalysts can provide an avenue for bridging the detailed understanding from surface science model systems to the design of real-world catalyst systems. Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS) was employed on a supported catalyst to investigate the evolution of surface-bound intermediates using CO oxidation as a probe reaction. Read Application note.
Key citations for the Harrick Praying Mantis DRIFTS accessory and the High Temperature Reaction Chamber.
Matsubu, JC, Yang, VN, & Christopher, P (2015). Isolated Metal Active Site Concentration and Stability Control Catalytic CO2 Reduction Selectivity. Journal of the American Chemical Society, ACS Publications, https://doi.org/10.1021/ja5128133

Xu, Y, Wang, C, Li, X, Xiong, L, Zhang, T, Zhang, L, Zhang, Q, Gu, L, Lan, Y, & Tang, J (2024), Efficient methane oxidation to formaldehyde via photon–phonon cascade catalysis, Nature Sustainability, nature.com, https://www.nature.com/articles/s41893-024-01401-y


Rao, Z, Cao, Y, Huang, Z, Yin, Z, Wan, W, Ma, M, Wu, Y, Wang, J, Yang, G, Cui, Y, Gong, Z, & Zhou, Y (2021). Insights into the Nonthermal Effects of Light in Dry Reforming of Methane to Enhance the H2/CO Ratio Near Unity over Ni/Ga2O3. ACS …, ACS Publications, https://doi.org/10.1021/acscatal.0c04826

Ross-Medgaarden, EI, & Wachs, IE (2007). Structural determination of bulk and surface tungsten oxides with UV− vis diffuse reflectance spectroscopy and Raman spectroscopy. The Journal of Physical Chemistry C, ACS Publications, https://doi.org/10.1021/jp074219c

Rao, Z, Wang, K, Cao, Y, Feng, Y, Huang, Z, Chen, Y, Wei, S, Liu, L, Gong, Z, Cui, Y, Li, L, Tu, X, Ma, D, & Zhou, Y (2023), ‘Light-Reinforced Key Intermediate for Anticoking To Boost Highly Durable Methane Dry Reforming over Single Atom Ni Active Sites on CeO2’, Journal of the American Chemical Society, ACS Publications, https://doi.org/10.1021/jacs.3c07077

Rao, Z, Wang, K, Cao, Y, Feng, Y, Huang, Z, Chen, Y, Wei, S, Liu, L, Gong, Z, Cui, Y, Li, L, Tu, X, Ma, D, & Zhou, Y (2023), ‘Light-Reinforced Key Intermediate for Anticoking To Boost Highly Durable Methane Dry Reforming over Single Atom Ni Active Sites on CeO2’, Journal of the American Chemical Society, ACS Publications, https://doi.org/10.1021/jacs.3c07077


Rao, Z, Wang, K, Cao, Y, Feng, Y, Huang, Z, Chen, Y, Wei, S, Liu, L, Gong, Z, Cui, Y, Li, L, Tu, X, Ma, D, & Zhou, Y (2023), ‘Light-Reinforced Key Intermediate for Anticoking To Boost Highly Durable Methane Dry Reforming over Single Atom Ni Active Sites on CeO2’, Journal of the American Chemical Society, ACS Publications, https://doi.org/10.1021/jacs.3c07077

Lei, H, Chen, D, Yang, J, Khetan, A, Jiang, J, Peng, B, Simon, U, Ye, D, & Chen, P 2023, ‘Revealing the Formation and Reactivity of Cage-Confined Cu Pairs in Catalytic NOx Reduction over Cu-SSZ-13 Zeolites by In Situ UV–Vis Spectroscopy and Time-Dependent DFT Calculation’, Environmental Science & Technology, ACS Publications, https://doi.org/10.1021/acs.est.3c00458


Jo, S, Woo, JH, Nguyen, T, Kim, JE, Kim, TY, Ryu, HJ, Hwang, B, Kim, JC, Lee, SC, & Gilliard-AbdulAziz, KL 2023, ‘Zr-Modified Ni/CaO Dual Function Materials (DFMs) for Direct Methanation in an Integrated CO2 Capture and Utilization Process’, Energy & Fuels, ACS Publications, https://doi.org/10.1021/acs.energyfuels.3c02935


Tan, JZ, Ortega, M, Miller, SA, Hullfish, CW, Kim, H, Kim, S, Hu, W, Hu, JZ, Lercher, JA, Koel, BE, & Sarazen, ML (2024) ‘Catalytic consequences of hierarchical pore architectures within MFI and FAU zeolites for polyethylene conversion’, ACS …, ACS Publications, https://doi.org/10.1021/acscatal.4c01213

Brahmi, A, Ziani, S, AitAli, S, Benkhaoula, BN, Yu, Y, Ahouari, H, Khireddine, H, & Luukkonen, T (2024), ‘Porous metakaolin geopolymer as a reactive binder for hydroxyapatite adsorbent granules in dye removal’, Hybrid Advances, Elsevier, https://www.sciencedirect.com/science/article/pii/S2773207X23001173



Simion, CE, Junker, B, Weimar, U, Stanoiu, A, & Bârsan, N (2023), ‘Sensing mechanisms of CO and H2 with NiO material–DRIFTS investigations’, Sensors and Actuators B: Chemical, Elsevier, https://www.sciencedirect.com/science/article/pii/S0925400523007438


Carrero, CA, Keturakis, CJ, Orrego, A, Schomächer, R & Wachs, IE (2013). Anomalous reactivity of supported V 2 O 5 nanoparticles for propane oxidative dehydrogenation: influence of the vanadium oxide precursor. Dalton Transactions, pubs.rsc.org, https://pubs.rsc.org/en/content/articlehtml/2013/dt/c3dt50611h
Lwin, S, Li, Y, Frenkel, AI, & Wachs, IE (2016). Nature of WOx Sites on SiO2 and Their Molecular Structure–Reactivity/Selectivity Relationships for Propylene Metathesis. Acs Catalysis, ACS Publications, https://doi.org/10.1021/acscatal.6b00389
Ro, I, Xu, M, Graham, GW, Pan, X, & Christopher, P (2019). Synthesis of Heteroatom Rh–ReOx Atomically Dispersed Species on Al2O3 and Their Tunable Catalytic Reactivity in Ethylene Hydroformylation. ACS Catalysis, ACS Publications, https://doi.org/10.1021/acscatal.9b02111
Gao, J, Zheng, Y, Fitzgerald, GB, & … (2014). Structure of Mo2Cx and Mo4Cx Molybdenum Carbide Nanoparticles and Their Anchoring Sites on ZSM-5 Zeolites. The Journal of …, ACS Publications, https://doi.org/10.1021/jp4106053
Pandey, D, & Deo, G (2014). Promotional effects in alumina and silica supported bimetallic Ni–Fe catalysts during CO2 hydrogenation. Journal of Molecular Catalysis A: Chemical, Elsevier, https://www.sciencedirect.com/science/article/pii/S1381116913003956
Muckenhuber, H, & Grothe, H (2007). A DRIFTS study of the heterogeneous reaction of NO2 with carbonaceous materials at elevated temperature. Carbon, Elsevier, https://www.sciencedirect.com/science/article/pii/S0008622306004842
Qi, J, Finzel, J, Robatjazi, H, Xu, M, & … (2020). Selective Methanol Carbonylation to Acetic Acid on Heterogeneous Atomically Dispersed ReO4/SiO2 Catalysts. Journal of the …, ACS Publications, https://doi.org/10.1021/jacs.0c05026
Degler, D, Rank, S, Müller, S, & … (2016). Gold-loaded tin dioxide gas sensing materials: mechanistic insights and the role of gold dispersion. Acs …, ACS Publications, https://doi.org/10.1021/acssensors.6b00477
O’Brien, CP, Jenness, GR, Dong, H, Vlachos, DG, & … (2016). Deactivation of Pt/Al2O3 during propane oxidation at low temperatures: Kinetic regimes and platinum oxide formation. Journal of Catalysis, Elsevier, https://www.sciencedirect.com/science/article/pii/S0021951716000671
Rao, Z, Wang, K, Cao, Y, Feng, Y, Huang, Z, & … (2023). Light-Reinforced Key Intermediate for Anticoking To Boost Highly Durable Methane Dry Reforming over Single Atom Ni Active Sites on CeO2. Journal of the …, ACS Publications, https://doi.org/10.1021/jacs.3c07077
Chakrabarti, A, & Wachs, IE (2018). Molecular Structure–Reactivity Relationships for Olefin Metathesis by Al2O3-Supported Surface MoOx Sites. ACS Catalysis, ACS Publications, https://doi.org/10.1021/acscatal.7b03598
Gao, J, Zheng, Y, Tang, Y, Jehng, JM, Grybos, R, & … (2015). Spectroscopic and computational study of Cr oxide structures and their anchoring sites on ZSM-5 zeolites. ACS …, ACS Publications, https://doi.org/10.1021/acscatal.5b00333
Liu, Y, Liu, Z, Mnichowicz, B, Harinath, AV, Li, H, & … (2016). Chemical deactivation of commercial vanadium SCR catalysts in diesel emission control application. Chemical Engineering …, Elsevier, https://www.sciencedirect.com/science/article/pii/S1385894715015867
Molinari, JE, Nakka, L, Kim, T, & Wachs, IE (2011). Dynamic Surface Structures and Reactivity of Vanadium-Containing Molybdophosphoric Acid (H3+xPMo12–xVxO40) Keggin Catalysts during Methanol …. ACS Catalysis, ACS Publications, https://doi.org/10.1021/cs2001362
Taifan, WE, Yan, GX, & Baltrusaitis, J (2017). Surface chemistry of MgO/SiO 2 catalyst during the ethanol catalytic conversion to 1, 3-butadiene: in-situ DRIFTS and DFT study. Catalysis Science & Technology, pubs.rsc.org, https://pubs.rsc.org/en/content/articlehtml/2017/cy/c7cy01556a
Chakrabarti, A, Gierada, M, Handzlik, J, & Wachs, IE (2016). Operando Molecular Spectroscopy During Ethylene Polymerization by Supported CrOx/SiO2 Catalysts: Active Sites, Reaction Intermediates, and Structure-Activity …. Topics in Catalysis, Springer, https://doi.org/10.1007/s11244-016-0546-6
Abreu, NJ, Valdés, H, Zaror, CA, Azzolina-Jury, F, & … (2019). Ethylene adsorption onto natural and transition metal modified Chilean zeolite: An operando DRIFTS approach. Microporous and …, Elsevier, https://www.sciencedirect.com/science/article/pii/S1387181118304189
Keturakis, CJ, Ni, F, Spicer, M, Beaver, MG, & … (2014). Monitoring Solid Oxide CO2 Capture Sorbents in Action. …, Wiley Online Library, https://doi.org/10.1002/cssc.201402474
He, Y, Ford, ME, Zhu, M, Liu, Q, Wu, Z, & Wachs, IE (2016). Selective catalytic reduction of NO by NH3 with WO3-TiO2 catalysts: Influence of catalyst synthesis method. Applied Catalysis B …, Elsevier, https://www.sciencedirect.com/science/article/pii/S0926337316300819
Ross-Medgaarden, EI, Wachs, IE, & … (2009). Tuning the electronic and molecular structures of catalytic active sites with titania nanoligands. Journal of the …, ACS Publications, https://doi.org/10.1021/ja711456c
Kuan, WF, Yu, WY, Tu, FY, Chung, CH, Chang, YC, & … (2022). Facile reflux preparation of defective mesoporous ceria nanorod with superior catalytic activity for direct carbon dioxide conversion into dimethyl carbonate. Chemical Engineering …, Elsevier, https://www.sciencedirect.com/science/article/pii/S1385894721045174
Marinkovic, NS, Wang, Q, & Frenkel, AI (2011). In situ diffuse reflectance IR spectroscopy and X-ray absorption spectroscopy for fast catalytic processes. Synchrotron Radiation, journals.iucr.org, https://journals.iucr.org/paper?cnor=kv5093&buy=yes
Kiani, D, Sourav, S, Wachs, IE, & … (2020). Synthesis and molecular structure of model silica-supported tungsten oxide catalysts for oxidative coupling of methane (OCM). Catalysis Science & …, pubs.rsc.org, https://pubs.rsc.org/en/content/articlehtml/2020/cy/d0cy00289e
Xu, G, Wang, H, Yu, Y, & He, H (2021). Role of silver species in H2-NH3-SCR of NOx over Ag/Al2O3 catalysts: Operando spectroscopy and DFT calculations. Journal of Catalysis, Elsevier, https://www.sciencedirect.com/science/article/pii/S0021951720305170
Liu, C, Nauert, SL, Alsina, MA, Wang, D, Grant, A, & … (2019). Role of surface reconstruction on Cu/TiO2 nanotubes for CO2 conversion. Applied Catalysis B …, Elsevier, https://www.sciencedirect.com/science/article/pii/S092633731930493X
Małachowska, E, Pawcenis, D, Dańczak, J, & … (2021). Paper ageing: the effect of paper chemical composition on hydrolysis and oxidation. Polymers, mdpi.com, https://www.mdpi.com/2073-4360/13/7/1029
Tran-Thuy, TM, Chen, CC, & Lin, SD (2017). Spectroscopic studies of how moisture enhances CO oxidation over Au/BN at ambient temperature. ACS Catalysis, ACS Publications, https://doi.org/10.1021/acscatal.7b01374
Martínez, JJ, Silva, L, Rojas, HA, Romanelli, GP, & … (2017). Reductive amination of levulinic acid to different pyrrolidones on Ir/SiO2-SO3H: Elucidation of reaction mechanism. Catalysis Today, Elsevier, https://www.sciencedirect.com/science/article/pii/S0920586117305606
Guo, M, Lis, BM, Ford, ME, & Wachs, IE (2022). Effect of redox promoters (CeOx and CuOx) and surface sulfates on the selective catalytic reduction (SCR) of NO with NH3 by supported V2O5-WO3/TiO2 catalysts. Applied Catalysis B: Environmental, Elsevier, https://www.sciencedirect.com/science/article/pii/S0926337322000480
Aghbolaghy, M, Soltan, J, & Chen, N (2017). Role of surface carboxylates in the gas phase ozone-assisted catalytic oxidation of toluene. Catalysis Letters, Springer, https://doi.org/10.1007/s10562-017-2143-0
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Liu, N, Chen, X, Zhang, J, & Schwank, JW (2015). DRIFTS study of photo-assisted catalytic CO+ NO redox reaction over CuO/CeO2-TiO2. Catalysis Today, Elsevier, https://www.sciencedirect.com/science/article/pii/S0920586115002631
Liu, H, You, C, & Wang, H (2020). Time-resolved in-situ IR and DFT study: NH3 adsorption and redox cycle of acid site on vanadium-based catalysts for NO abatement via selective catalytic reduction. Chemical Engineering Journal, Elsevier, https://www.sciencedirect.com/science/article/pii/S1385894719321667
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