Diffuse Reflectance System Coupled to Cryostat and Gas Adsorption Analyzer

Category

Characterization Tools

Laboratory

Lawrence Berkeley National Laboratory

Description

The diffuse reflectance system coupled to to gas adsorption analyzers can collect data across a wide range of pressures and temperatures depending on configuration. Kinetic measurements are also possible with time resolution of up to 20 ms, depending on spectral resolution and signal intensity.

Spectrometer
Range (MCT): 8,000–650 cm –1
Resolution: 0.4 cm –1

Temperature Control
High Temperature Cell: 35–180 °C
Low Temperature Cell: 300–15 K

Pressure Control
ASAP2020Plus: 0–1 bar
HPVAII: 0–100 bar

Status

Currently available for use in collaboration with HyMARC.

Figures

Diffuse reflectance system lab equipment

Figure 1. Diffuse reflectance system coupled to cryostat and gas adsorption analyzer

Figure 2. At low pressures spectra indicate only adsorption at Co2+ site (Site 1). Secondary physisorption sites (Site 2) are populated after Site 1 is filled. (Source: J.R. Long et al., LBNL)

References

  1. J.R. Long and M. Head-Gordon. “HySCORE: LBNL Technical Activities: Hydrogen Storage in Metal-Organic Frameworks,” DOE Hydrogen and Fuel Cells Program Annual Merit Review and Peer Evaluation Meeting (Washington, DC, June 2018).
  2. B. R. Barnett, H. A. Evans, G. M. Su, H. Z. H. Jiang, R. Chakraborty, D. Banyeretse, T. J. Hartman, M. B. Martinez, B. A. Trump, J. D. Tarver, M. N. Dods, L. M. Funke, J. Börgel, J. A. Reimer, W. S. Drisdell, K. E. Hurst, T. Gennett, S. A. FitzGerald, C. M. Brown, M. Head-Gordon, J. R. Long,  “Observation of an Intermediate to H2 Binding in a Metal–Organic Framework,” J. Am. Chem. Soc. (2021) 143 (36), 14884–14894.
  3. D. E Jaramillo, H. Z. H. Jiang, H. A. Evans, R. Chakraborty, H. Furukawa, C. M. Brown, M. Head-Gordon, J. R. Long, “Ambient-Temperature Hydrogen Storage via Vanadium (II)-Dihydrogen Complexation in a Metal–Organic Framework.” J. Am. Chem. Soc. (2021) 143 (16), 6248–6256.