Atmospheric Pressure Reactor System
The atmospheric pressure reactor system is designed for testing the efficiency of various catalysts for the treatment of gas-phase pollutants. EMSL houses several quartz plug reactors designed to hold either extrudate or coated monolith catalysts. A gas inlet capable of mixing up to eight gases plus water is used to simulate the waste stream of interest. A temperature-programmable furnace controls the reactor temperature. After treatment, the gas is sampled by a Fourier transform infrared spectrometer, a gas chromatograph, and an oxides-of-nitrogen meter.
Individuals may use this instrumentation independently for their research, following applicable training.
Instrument ID:
34031
Availability: 10 hours a day, 5 days a week
Custodians
| Russell Tonkyn | (509) 371-6157 | rg.tonkyn@pnnl.gov |
Publications
The nature of nitrate species formed in the Al₂O₃, 8wt%, and 20wt% BaO/Al₂O₃ catalysts was investigated in a...
The low temperature (<170°C) oxidation activity of supported Pt catalysts is impeded in the presence of CO. Supported Au catalysts are...
Pd/CeO2/Ta/Si model catalysts were prepared by spin coating and sputter deposition method, and characterized by means of AFM, SEM and in situ XPS,...
The changes in the morphology of Ba-oxide-based NOx storage/reduction catalysts were investigated using time resolved x-ray diffraction, transmission...
Interaction of NO₂ with an ordered θ-Al₂O₃/NiAl(100) model catalyst surface was investigated using...
In situ FTIR spectroscopy coupled with mass spectrometry, and time resolved X-ray diffraction were used to study the efficiency of nitrate reduction...
Desulfation processes were investigated over sulfated Pt BaO/Al2O3 with different barium loading (8 wt% and 20 wt%) by using H2 temperature...
Significant reduction of NOx in synthetic light duty diesel exhaust has been achieved over a broad temperature window by combining atmospheric plasma...
One of the key questions for the BaO-based NOx catalyst system is the morphological evolution of Ba(NO3)2 to BaO upon heating for releasing of NOx or...
The adsorption of NO₂ was investigated and compared on Na- and Ba-Y,FAU zeolites both in the absence and presence of adsorbed water using...
The effect of acid sites on the catalytic activities of a series of H+-modified Na-Y zeolites was investigated in the non-thermal plasma assisted NOx...
Plasma discharges in diesel simulated exhaust gas oxidize NO primarily to NO2 while formaing aldehydes andother partial-oxidation products from...
The NO;( storage properties of a BaO/θ-Al[2]O[3]/NiAl(100) model system, with a BaO coverage of ∼2 monolayer equivalent (MLE), was...
Fractional factorial design was used to determine which factors have significant effects on the HCN (hydrogen cyanide) oxidation reaction over 0.5%...
The effects of catalyst preparation on the NOx reduction activity of a series of Ba-Y,FAU zeolites were investigated using a simulated exhaust gas...
Nanofibers of an enzyme-polymer composite were successfully electrospun with retained biocatalytic activity. The enzyme, -chymotrypsin,...
In situ time-resolved X-ray diffraction in combination with the Rietveld method was used to study the contraction/expansion behavior of a BaY...
Adsorbed ionic NOx species formed upon the interaction of NO₂ with dehydrated or hydrated Na-, and Ba-Y, FAU zeolites were characterized...
The adsorption of HCN and the reaction of HCN with NO₂ over Na-, and Ba-Y,FAU zeolite catalysts were investigated using in situ FTIR and...
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Projects
Catalytic materials for the full and complex range of chemical transformations being considered for upgrading biomass-derived molecules to fuels and...