A Sensitive Manostat for Low Pressures and its Application to the Adsorption of Hydrogen and Deuterium on Copper

Enhanced self-diffusion of adsorbed methanol in silica aerogel

“…[5][6][7] Methanol adsorption isotherms were obtained in a manner similar to gas adsorption experiments typically used for determination of the surface area of porous materials. However, the usual adsorption experiment is performed with the amount of adsorbate measured either volumetrically [8][9][10][11] or by weight. 9 In the present work it is determined from the NMR proton signal calculated from the area under the echo formed in a standard Hahn echo sequence 12 , (π/2 − τ − π − τ − echo) with a pulse separation, τ = 175 µs.…”

“…However, the usual adsorption experiment is performed with the amount of adsorbate measured either volumetrically [8][9][10][11] or by weight. 9 In the present work it is determined from the NMR proton signal calculated from the area under the echo formed in a standard Hahn echo sequence 12 , (π/2 − τ − π − τ − echo) with a pulse separation, τ = 175 µs. For T 2 and diffusion measurements 10 CPMG pulse sequences were accumulated at each pressure, each having a train of 60 echoes with τ values ranging from 209 µs to 409 µs.…”

Kinetics of Chemisorption of Gases on Solids.

“…Further work (286) on copper showed that more hydrogen than deuterium is adsorbed at 0°C. after about 300 min., while the opposite is found at 125°C.…”

Design, Synthesis, and Mechanistic Evaluation of Iron-Based Catalysis for Synthesis Gas Conversion to Fuels and Chemicals

“…Soller et al [26] observed about 1.4 times more adsorption of D 2 than H 2 on Cu powder at 398 K. Larger adsorption coefficients were measured for D 2 than for H 2 also on Ni samples [27,28]. In the case of Fe catalysts, previous studies have indicated that chemisorption of D 2 is preferred over that of H 2 [29].…”