Kinetic and isotopic data on Pt clusters and activation free energy barriers from density functional theory (DFT) on Pt(111) are used to assess the elementary steps involved in NO–H2 reactions. Pt clusters 1–10 nm in diameter gave similar turnover rates, indicating that these elementary steps are insensitive to surface-atom coordination. N–O cleavage occurs after sequential addition of two chem...

Figure 1: (49 mm+10)x(2.2 words/mm)x(1 column) = 130 Figure 2: (65 mm+10)x(2.2 words/mm)x(2 column) = 330 Figure 3: (50 mm+10)x(2.2 words/mm)x(1 column) = 132 Figure 4: (50 mm+10)x(2.2 words/mm)x(1 column) = 132 Figure 5: (50 mm+10)x(2.2 words/mm)x(1 column) = 132 Figure 6a: (50 mm+10)x(2.2 words/mm)x(1 column) = 132 Figure 6b: (50 mm+10)x(2.2 words/mm)x(1 column) = 132 Figure 7: (61 mm+10)x(2....

This report describes experimental studies and analyses on the detonation properties of flammable gases that may be present in the waste storage tanks at Hanford, WA. These studies were carried out in the Explosion Dynamics Laboratory, part of the the Graduate Aeronautical Laboratories of the California Institute of Technology (GALCIT). Detonation cell sizes and pressures were measured in the G...

The proton affinities of hydrogen and oxygen are very similar. Therefore, it has been discussed that the proton transfer from the omnipresent H(3)(+) to molecular oxygen in the near thermoneutral reaction H(3)(+) + O(2) <--> O(2)H(+) + H(2) effectively binds the interstellar oxygen in O(2)H(+). In this work, the proton transfer reaction has been investigated in a low-temperature 22-pole ion tra...

The ionic chemistry of various hydrogen mixtures (H2/N2, H2/O2, and H2/air) has been studied in low pressure hollow cathode discharges. The major ions identified in the different discharges (H3, N2H, H3O and NH4) have been also found in astronomical observations or predicted in astrochemical models. The relative stability of the protonated ions in the various mixtures has been investigated in d...

The surface chemistry of a commercial AC (AC(0)) was selectively modified, without changing significantly its textural properties, by chemical oxidation with HNO(3) (AC(HNO3)) and O(2) (AC(O2)), and thermal treatments under H(2) (AC(H2)) or N(2) (AC(N2)) flow. The effect of modified AC on anaerobic chemical dye reduction was assayed with sulphide at different pH values 5, 7 and 9. Four dyes wer...

This paper reports for the first time in situ crystal growth of ZIF-8 on electrospun polyurethane (PU) nanofibers. In SEM images, continuous and compact ZIF-8 nanocrystals grow along electrospun PU nanofibers. The highest loading capacity of ZIF-8 on PU reaches 63%. By N2 adsorption-desorption, ZIF-8-PU shows a high surface area of 566 cm(2) g(-1). Combining the good flexibility of PU with the ...

Hydrogen gas (H2) and carbon monoxide (CO) are involved in plant growth and developmental processes and may induce plant tolerance to several stresses. However, the independent roles and interaction effect of H2 and CO in adventitious root development under drought conditions have still not received the needed research attention. We hypothesize that there exists crosstalk between H2 and CO duri...