Hydrogen-Containing Samples

The cycle life of the hydrogen-containing samples also appears to be limited as shown in ref 8. This is unacceptable for a practical application. The capacity loss is mostly due to the elimination of the excess capacity which exhibits hysteresis. Since this portion of the capacity appears related to the incorporated hydrogen, its elimination with cycling may not be unexpected. We do not understand this point fully yet, and further work would appear to be warranted. 

Since hydrogen-containing samples have strong absorption bands in the NIR range, they may behave as gray or even black emitters, according to the combination of Planck s with Kirchhoff s law (Eq. 3.3-8). Samples which contain black particles like soot or fine metal particles behave like black bodies. The particles are heated in the laser beam and emit Planck radiation, which at somewhat elevated temperatures is as strong as that of weak Raman lines. 

In gas-solid extractions the sample is passed through a container packed with a solid adsorbent. One example of the application of gas-solid extraction is in the analysis of organic compounds for carbon and hydrogen. The sample is combusted in a flowing stream of O2, and the gaseous combustion products are passed through a series of solid-phase adsorbents that remove the CO2 and 1T20. 

The prafoimance of foe catalyst for foe CTA hj hopurification was evaluated in a batch autoclave r ictor under conditions similar to those in the indtistry. 90g of CTA containing about 3000 ppm o f 4-CBA and 240 ml of water were chaigrf to foe reactor with Ig catalyst loaded. Hydropurification of foe CTA was conducted at 280ti in foe reactor under stirring (800 rpm) and 0.7 MPa hydrogen pressure. Samples takra after 0.5 h of reaction were analyzed with HPLC [4]. The catalytic performance of foe Pd/CNF catalyst was characterized by 4-CBA s conversion. 

Sample A contains eight H2 molecules and four Ne atoms, and Sample B contains four H2 molecules and eight Ne atoms. In a beam experiment, both samples would give two peaks in relative areas of 2 1. Which sample was used for this experiment Particles with small mass move faster than particles with large mass, so we expect HziM M — 2.02 g/mol) to reach the detector before Ne (M M = 20.2 g /mol). The data show that the first substance to reach the detector is present in the smaller amount. Consequently, the sample used in the beam experiment is the one with the smaller amount of the hydrogen molecules. Sample B. 

Capacitance measurements were performed to investigate the 1/C versus voltage relationship. Measurements were performed at 300°C after annealing the samples in oxygen- or hydrogen-containing ambient. The curves show the same... 

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